Home

traction control (TCL)

1. Timing control sole me NOI I valve DFU0669 DFU0670 Mon a Diesel fuel temperature sensor ee Vm rN RY a Sa DFU0690 SOLENOID TYPE SPILL VALVE CHECK 13300660015 1 Disconnect the solenoid type spill valve connector 2 Measure the resistance between terminals 1 and 2 Standard value 1 2 Q at 20 C Check that the sound of the solenoid valve operating can be heard when battery voltage is applied momentarily for 2 3 seconds between the solenoid type spill valve terminals Caution Because the solenoid type spill valve is current controlled it should not be left for a long time with the voltage applied TIMING CONTROL SOLENOID VALVE CHECK 13300560025 Disconnect the timing control solenoid valve connector Measure the resistance between terminals 1 and 2 Standard value 8 12 Q at 20 C Check that the sound of the solenoid valve operating can be heard when battery voltage is applied between the timing control solenoid valve terminals DIESEL FUEL TEMPERATURE SENSOR CHECK 43300680011 1 Disconnect the diesel fuel temperature sensor connector 2 Measure the resistance between terminals 1 and 2 Standard value 2 2 2 7 kQ at 20 C 13E 60 DIESEL FUEL On vehicle Service K 3 Samer Pump operation sensor We
2. Yes Is the ABS warning lamp illuminated or is an ABS diagnosis code Carry out ABS troubleshooting Refer to GROUP 35B Trouble output shooting No NG Measure at ABS ECU connector A 04 L e Replace the TCL ECU e Ignition switch ON e Measure at the ECU side with the connector connected e Voltage between terminal 17 and body earth e Voltage between terminal 21 and body earth OK 48 52 V OK 1 NG Check the following connectors m gt Repair A 04 C 10 OK Y Check trouble symptom NG Y Check the harness connectors between the ABS ECU and the TCL ECU and repair if necessary Code No 33 Rear right wheel speed sensor circuit system Probable cause Code No 34 Rear left wheel speed sensor circuit system These diagnosis codes are output if a pulse from the wheels on one side of rear Malfunction of rear wheel speed sensor indicates that the difference between the left wheel and the right wheel is 8km h or Malfunction of harness or connector more because of an open or short circuit in a wheel speed sensor or a defective Malfunction of TCL ECU sensor Malfunction of ABS ECU NOTE When these diagnosis codes are output erase the diagnosis code memory after carrying out repairs and then carry out a road test at 20 km h or more and check to be sure that the diagnosis codes are not output again Yes Is the ABS
3. NG Check the control relay Refer to P 13E 56 m gt Replace JoK NG Measure at the control relay connector C 31 Check the following connector e Disconnect the connector and measure at the harness side B 30 connector OK NG 1 Voltage between 2 3 and earth OK System voltage Repair OK y Check trouble symptoms NG Y Check the harness wire between the battery and control relay con nector and repair if necessary 1 NG Measure at the engine ECU connector C 53 C 55 L e Check the following connector e Disconnect the connector and measure at the harness side C 92 C 131 connector 1 Voltage between 25 and earth Ignition switch ON eo og pne OK System voltage Repai 2 Voltage between 59 and earth SPEI OK System voltage 4 NG y 3 Voltage between 72 and earth Check trouble symptoms OK System voltage When the terminal 59 is earthed NG 4 Continuity between 1 14 26 and earth OK Continuity 5 NG Check the harness wire between the engine ECU and ignition switch 5 Voltage between 61 and earth connector OK System voltage OK jna OK T Repair Check the following connectors C 53 C 55 d Check the ignition switch Refer to GROUP 54 Ignition Switch OK Ne Repair 5 gt Check the harness wire between the engine ECU and control relay Y connector and repair if necessary Check trouble symptoms NG y L Check the harness wire between the engine ECU and earth and R
4. Code No 23 Top dead centre sensor system Probable cause Range of Check Malfunction of the top dead centre sensor e Ignition switch ON Improper connector contact open circuit or e Engine speed is approx 50 r min or more short circuited harness wire of the top dead centre Set conditions sensor circuit e Sensor output voltage does not change for 4 seconds no pulse signal input Malfunction of the engine ECU OK Measure at the distributor connector B 42 Replace the engine ECU e Connect the connector Use the test harness MB991348 and jumper wire e Voltage between 5 and earth Engine cranking OK 0 4 3 0 V e Voltage between 5 and earth Engine idling OK 1 5 2 0 V yNa 1 NG Measure at the distributor connector B 42 __ Check the harness wire between the top dead centre sensor and e Disconnect the connector and measure at the harness side the control relay connector and repair if necessary 1 Voltage between 6 and earth Ignition switch ON OK System voltage TANS i NG 9 g E __ Check the following con Repair 2 Voltage between 5 and earth Ignition switch ON nector C 39 OK 4 8 5 2 V 3 Continuity between 7 and earth 3 NG OK OK Continuity Y Check trouble symptom OK 1 NG NG Check the following con Repair u 5 NG p nector B 42 Check the harness wire Repair between the engine ECU and yor the top dead centre sensor Check trouble symptom
5. NG m Repair NG NG Measure at the air flow sensor con Measure at the air flow sensor con Check the following connector nector B 12 nector B 12 C 40 e Connect the connector Use e Disconnect the connector and OK the test harness MB991709 measure at the harness side y e Voltage between 2 and earth e Voltage between 1 and earth Ignition switch ON Ignition switch ON Cheek Irouble symptom OK 3 7 4 3 V Altitude 0 m OK 4 8 5 2 V NG 3 2 3 8 V Altitude e Continuity between 5 and earth Y 1 200 m OK Continuity Check the harness wire between OK the engine ECU and the baromet OK ric pressure sensor connector Y OK Check the following connector Repair B 12 OK Y Check trouble symptom Replace the engine ECU NG 1 NG Check the harness wire between gt Repair the engine ECU and the baromet OK ric pressure sensor connector Replace the air flow sensor ro NG i Measure at the engine ECU con Check the harness wire between nector C 40 the engine ECU and the baromet e Connect the connector ric pressure sensor connector and e Voltage between 85 and earth repair if necessary Ignition switch ON OK 3 7 4 3 V Altitude 0 m 3 2 3 8 V Altitude 1 200 m OK L NG Check the following connector gt Repair C 40 OK Y Check trouble symptom NG Y Replac
6. Injection timing 2 correction resistor wa oe 0 OVO ON ES amp G pais 3 A 6 Ly DFUO673 Injection rate A correction resistor 3 JDFU0674 Fuel cut solenoid mD valve DFU0675 DFU0691 PUMP OPERATION SENSOR CHECK 43300690014 1 Disconnect the pump operation sensor connector 2 Measure the resistance between terminals 1 and 2 Standard value 215 245 Q at 20 C INJECTION TIMING CORRECTION RESISTOR CHECK 13300700014 1 Disconnect the injection timing correction resistor connector 2 Measure the resistance between terminals 1 and 2 Standard value 0 1 2 5 kQ at 20 C INJECTION RATE CORRECTION RESISTOR CHECK 13300710017 1 Disconnect the injection rate correction resistor connector 2 Measure the resistance between terminals 1 and 2 Standard value 0 1 2 5 kQ at 20 C FUEL CUT SOLENOID VALVE CHECK 13300720010 1 When a sound scope is held against the fuel cut solenoid valve and the ignition switch is turned to ON check that the sound of the valve operating can be heard 2 Disconnect the fuel cut solenoid valve connector 3 Measure the resistance between fuel cut solenoid valve terminal and the injection pump body Standard value 8 10 Q THROTTL
7. 27 SPECIAL TOOLS ccceecccccccccuece 3 Vacuum Tank Check cecxcst ued oe cones ees 27 Vacuum Actuator Check 000 0 ee 27 TROUBLESHOOTING 02000eeees 3 Accelerator Pedal Position Sensor APS ON VEHICLE SERVICE 25 Pg e E E EE EE EEE at ET 27 System Check Using the TCL Indicator TCL SWITCH eicsccianccteiaia ieee 28 LAMPS sieges rA EAEE GAs Alera KARA ects Salad oes 25 TCL Operation Check 00 0 00 eee 25 STEERING WHEEL SENSOR 29 Slop Lamp SWAG ENBOR siciecph re eee nl EY TORGU nra a lea dane 30 WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM SRS EQUIPPED VEHICLES WARNING 1 Improper service or maintenance of any component of the SRS or any SRS related component can lead to personal injury or death to service personnel from inadvertent firing of the airbag or to the driver and passenger from rendering the SRS inoperative 2 Service or maintenance of any SRS component or SRS related component must be performed only at an authorized MITSUBISHI dealer 3 MITSUBISHI dealer personnel must thoroughly review this manual and especially its GROUP 52B Supplemental Restraint System SRS before beginning any service or maintenance of any component of the SRS or any SRS related component NOTE The SRS includes the following components SRS ECU SRS warning lamp air bag module clock spring side impact sensor and interconnecting wi
8. Item No Inspection item DIESEL FUEL Troubleshooting Drive contents Inspection contents 13E 43 Reference page Normal condition Inspection procedure No Radiator fan A C condens er fan Needle nosed wire probe Drives radiator fan and A C condenser fan at 0 duty Ignition switch ON Procedure 13E 33 No 20 Fans stop Drives radiator fan and A C condenser fan at 50 duty Ignition switch ON Fans operate at medium speed Drives radiator fan and A C condenser fan at 100 duty 7FUI264 Ignition switch ON Fans operate at high speed CHECK AT THE ENGINE ECU TERMINALS 13300450025 TERMINAL VOLTAGE CHECK CHART 1 2 Connect a needle nosed wire probe test harness MB991223 or paper clip to a voltmeter probe Insert the needle nosed wire probe into each of the engine ECU connector terminals from the wire side and measure the voltage while referring to the check chart NOTE 1 Make the voltage measurement with the engine ECU connectors connected 2 You may find it convenient to pull out the engine ECU to make it easier to reach the connector terminals 3 The checks can be carried out off the order given in the chart Caution Short circuiting the positive probe between a connector terminal and earth could damage the vehicle wiring the sensor engine ECU or all of them Be careful to prevent this
9. NG Check the idle position switch 1 Refer to P 13E 58 gt JoK NG Measure at the accelerator pedal position sensor connector B 41 _ _ e Disconnect the connector and measure at the harness side connector e Voltage between 3 and earth Ignition switch ON OK 4 V or higher e Continuity between 4 and earth OK Continuity OK Y Check the following connector B 41 OK NG Repair Y Check trouble symptom NG Y Replace the engine ECU Replace the accelerator pedal position sensor Check the following connector C 54 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the accelera tor pedal position sensor connector OK NG Repair Y Replace the engine ECU DIESEL FUEL Troubleshooting 13E 17 Code No 24 Idle position switch 2 system Probable cause Range of Check e Accelerator pedal position sensor signal output is 1 2 V or higher e Idle position switch 1 OFF Set Conditions e Idle position switch 2 on signal is input for 1 second or more Malfunction of the idle position switch 2 Open or short circuit in idle position switch 2 circuit or poor connector contact Malfunction of the engine ECU Range of Check e Accelerator pedal position sensor signal output is 0 48 V or lower e idle position switch 1 ON Set Condit
10. DIESEL FUEL Troubleshooting Code No 43 Timing control solenoid valve system 13E 19 Probable cause Range of Check e Ignition switch ST OFF e Engine speed 400 r min or more e Engine coolant temperature 60 C or higher Set Conditions e Target advance value differs from actual advance value by 7 or more continuous period of 10 seconds or more NG Check the timing control solenoid valve Refer to P 13E 59 e JoK NG Measure at the timing control solenoid valve connector B 56 lt L H _ gt drive vehicles gt B 57 lt R H drive vehicles gt e Disconnect the connector and measure at the harness side connector e Voltage between 2 and earth Ignition switch ON OK System voltage t NG Measure at the engine ECU connector C 53 e e Disconnect the connector and measure at the harness side connector e Voltage between 2 and earth Ignition switch ON OK System voltage OK Y Check the following connector C 53 OK Ne Repair Y Check trouble symptom NG Y NG MUT II Actuator test o 11 Timing control solenoid valve OK Sound of operation can be heard jOoK Replace the engine ECU Malfunction of the timing control solenoid valve Open or short circuit in timing control solenoid valve circuit or poor connector contact Incorrect ignition timing adjustment Malfunction of the injection pomp fora Malfunction of the engine
11. Check the ISC servo system Refer to P 13A 151 INSPECTION PROCEDURE 35 Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 148 INSPECTION PROCEDURE 31 Clean the throttle valve area Refer to P 13A 184 Check and adjust the fixed SAS Refer to P 13A 187 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 11 When the engine is cold it stalls at idling Die out 13A 137 Probable cause In such cases as the above the cause is probably that the air fuel mixture is inappropriate when the engine is cold or that the intake air volume is insufficient Malfunction of the ISC servo system Malfunction of the throttle body Malfunction of the injector system Malfunction of the ignition system Yes Were the battery terminals disconnected gt No Y Yes MUT II Self Diag code gt Are diagnosis codes displayed No y Yes Does the engine stall right after the accelerator pedal is released __ No Y No Is engine
12. OK Check the ignition switch Refer to GROUP 54 Ignition Switch and Immobilizer System Check the harness wire between engine ECU and fuel pump relay connector and repair if necessary Check air flow sensor AFS control circuit 1 NG Measure at the air flow sensor connector B 12 e Disconnect the connector and measure at the harness side 1 Voltage between 4 and earth Ignition switch ON OK System voltage 2 Voltage between 3 and earth Ignition switch ON OK 4 8 5 2 V 3 Continuity between 5 and earth OK Continuity e 2 3 NG J05 Check the following connector B 12 OK Ne Repair Y Check trouble symptom NG Y Replace the air flow sensor Check the harness wire between the air flow sensor and control relay connector and repair if necessary NG Check the following Repair connector C 40 OK Check trouble symptom NG Y NG Check the harness wire Repair between the engine ECU and air flow sensor con nector JoK Replace the engine ECU 13A 60 INSPECTION PROCEDURE 49 MPI lt 4G6 gt Troubleshooting Check throttle position sensor TPS output circuit Measure at the engine ECU connector C 40 e Connect the connector e Voltage between 84 and earth Ignition switch ON OK 0 3 1 0 V Throttle valve at idle position 4 5 5 5 V
13. 03Z0084 Engine oil 00005792 Fuel pressure regulator Fuel pipe assembly Delivery pipe Insulator Insulator Injector Grommets MPI lt 6A1 gt Injector lt Rear bank gt Pre removal Operation e Fuel Discharge Prevention Refer to P 13A 88 e Air Cleaner Removal 03Z0084 O ring _ osxo165 Engine oil _ Removal steps Engine cover Crank angle sensor connector Injector connector Vacuum hose Air pipe assembly mounting bolt Brake booster vacuum hose connection Connector bracket mounting bolt Connector bracket mounting bolt Noise condenser mounting bolt EGR solenoid valve connector Purge control solenoid valve connector 0 00N OTRWN 13A 205 Post installation operation e Air Cleaner Installation e Accelerator Cable Adjustment Refer to GROUP 17 On vehicle service 12 13 14 pAd 15 pAd 16 17 Delivery pipe 18 19 Insulator lt qAp pAd 20 21 Grommets lt A gt 1110108 00006519 Air intake plenum Air intake plenum gasket Injector connector High pressure fuel hose connection Fuel pipe assembly Insulator Injector 13A 206 MPI lt 6A1 gt Injector REMOVAL SERVICE POINT lt qAp DELIVERY PIPE INJECTOR REMOVAL Remove the delivery pipe with the injectors attached to it Caution Care must be taken when removing the delivery pipe not to drop the injector INSTALLATION SERVICE PO
14. NG Check the following Repair connector C 39 OK Check trouble symptom NG Y NG Check the harness wire Repair between the engine ECU and air flow sensor con nector JoK Replace the engine ECU 13A 160 INSPECTION PROCEDURE 50 MPI lt 6A1 gt Troubleshooting Check throttle position sensor TPS output circuit Measure at the engine ECU connector C 39 e Connect the connector e Voltage between 84 and earth Ignition switch ON OK 0 3 1 0 V Throttle valve at idle position 4 5 5 5 V Throttle valve fully open OK e Y NG Check the following connector B 07 Check trouble symptom Y Check the harness wire between engine ECU and throttle position sensor connector and repair if necessary INSPECTION PROCEDURE 51 NG e gt Repair Check the following connector C 39 OK Check trouble symptom NG Y Replace the engine ECU Repair Check injector control circuit NG Measure at the engine ECU connector C 33 aa e Disconnect the connector and measure at the harness side e Voltage between 1 2 3 14 15 16 and earth Ignition switch ON OK System voltage OK f T NG Check the following connector C 33 OK y Check trouble symptom NG y Replace the engine ECU NG Check the following connect
15. Replace the MUT II Check the harness between the fusible link No 2 and diagnosis connector and repair if necessary Repair Check the harness between the diagno sis connector and the earth and repair if necessary TCL Troubleshooting 13H 17 Inspection Procedure 2 Communication with the MUT II is not possible Probable cause Communication with TCL ECU only is not possible If the MUT II cannot communicate with the TCL ECU only the cause is probably Malfunction of harness or connector an abnormality in the TCL diagnosis line or in the TCL ECU power supply line or Malfunction of engine control relay earth line Malfunction of TCL ECU NG NG Measure at diagnosis connector C 20 Check the following connectors gt Repair and TCL ECU connector C 10 C 20 C 66 C 83 C 49 C 51 C 10 e Disconnect the connector and OK measure at the harness side NG S ae between the following Check trouble symptoms Check the harness between the TCL Sominas Feet ECU and diagnosis connector and re OK Continuity ve TCL ECU side 1 44 pair if necessary Diagnosis connector side 1 7 J0 NG NG Measure at TCL ECU connector C 10 Check the following connectors m Repair e Disconnect the connector and C 31 C 47 C 51 C 10 measure at the harness side OK e Engine idling j e Vol
16. The time cycle time T is reduced when the engine i i speed increases Time Time DFUO681 Wave Pattern Observation Points Check that cycle time T becomes shorter when the engine speed increases Examples of Abnormal Wave Patterns e Example Cause of problem Loose timing belt Incorrect installation of injection pump or pump operation sensor Wave pattern characteristics Wave pattern is displaced to the left or right DFU0667 Analyzer SOLENOID TYPE SPILL VALVE Measurement Method 1 Disconnect the solenoid type spill valve connector and connect the special tool test harness MB991348 in between Both the power supply side and the engine ECU side should be connected Special 2 Connect the analyzer special patterns pickup to atterns gt pickup solenoid type spill valve connector terminal 2 DFUO6B2 13E 52 DIESEL FUEL Troubleshooting Alternate Method Test harness not available Connect the analyzer special patterns pickup to engine ECU terminal 3 Standard Wave Pattern Observation conditions Function Special patterns Pattern height Variable Variable knob Adjust while viewing the wave pattern Pattern selector Display Engine r min Idle speed Standard wave pattern Point B Point A i Solenoid back electromotive force DFUO671 Wave Pattern Observation Points Point A Height of solenoid back electromotive force
17. Throttle position sensor system 13A 15 Engine coolant temperature sensor system 13A 16 Crank angle sensor system 13A 17 Camshaft position sensor 13A 18 Vehicle speed sensor system 13A 19 Barometric pressure sensor system 13A 20 Detonation sensor system 13A 21 Injector system 13A 21 Ignition coil system 13A 22 Immobilizer system 13A 23 Oxygen sensor rear system 13A 24 Communication wire with A T ECU system lt A T gt 13A 25 Alternator FR terminal system 13A 25 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE FOR DIAGNOSIS CODES Code No 11 Oxygen sensor front system Probable cause 13A 13 Range of Check 3 minutes have passed after engine was started Engine coolant temperature is approx 80 C or more Intake air temperature is 20 50 C Engine speed is approx 2 000 3 000 r min Vehicle is moving at constant speed on a flat level road surface Set conditions e The oxygen sensor front output voltage is around 0 6 V for 30 seconds does not cross 0 6 V for 30 seconds When the range of check operations given above the engine are carried out four time in succession a problem is detected after each operation which accompany starting of Check the oxygen sensor front Refer to P 13A 92 NG Replace JOK 1 NG Measure at the oxygen sensor front connector C 46 a e Disconnect
18. 13A 14 Code No 12 Air flow sensor system MPI lt 4G6 gt Troubleshooting Probable cause Range of Check e Engine speed is 500 r min or more Set conditions e Sensor output frequency is 3 Hz or less for 4 seconds Malfunction of the air flow sensor Improper connector contact open circuit or short circuited harness wire of the air flow sensor Malfunction of the engine ECU 1 NG Measure at the air flow sensor con Check the air flow sensor circuit nector B 12 Refer to P 13A 59 INSPECTION e Connect the connector Use PROCEDURE 48 the test harness MB991709 1 Voltage between 3 and earth pe 2 NG NG NG Engine Idling t Measure at the engine ECU con Check the following connector Repair OK 2 2 3 2 V nector C 34 B 12 2 Voltage between 7 and earth e Connect the connector OK 0 1 V Engine idling e Voltage between 19 and earth of 6 9 V 2 000 r min Ignition switch ON Check ircibi 1 i Jok OK 6 9 V eck trouble symptom NG P OK Replace the engine ECU y Check the following connector Repair 9A Replace the air flow sensor OK Y Check trouble symptom NG Y Replace the engine ECU Code No 13 Intake air temperature sensor system Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the e
19. Malfunction of the diesel fuel temperature sensor Open or short circuit in diesel fuel temperature sensor circuit or poor connector contact Malfunction of the engine ECU Replace the injection pump Check the following connector C 54 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the diesel fuel temperature sensor connector OK NG Repair Y Replace the engine ECU 13E 12 DIESEL FUEL Troubleshooting Code No 15 Engine coolant temperature sensor system Probable cause Range of Check Set Conditions e Malfunction of the engine coolant temperature sensor e Open or short circuit is detected in engine coolant temperature sensor circuit for Open or short circuit in engine coolant temperature 1 second sensor circuit or poor connector contact e Malfunction of engine ECU NG Check the engine coolant temperature sensor Refer to P 13E 57 __ __ Replace JoK NG Measure at the engine coolant temperature sensor connector B 33 m Check the following connector e Disconnect the connector and measure at the harness side C 54 connector OK NG e Voltage between 2 and earth Ignition switch ON OK 45 55 V Repair e Continuity between 1 and earth P OK Continuity y Check trouble symptom OK y NG Check the following c
20. Throttle position sensor Lever assembly Idle speed control body assembly O ring Throttle body Fixed SAS Speed adjusting screw O ring 6EN1376 NOTE 1 The fixed SAS and the speed adjusting screw are correctly adjusted at the factory and should not be removed 2 If the fixed SAS should happen to have been removed carry out fixed SAS adjustment Refer to page 13A 83 3 If the speed adjusting screw should happen to have been removed carry out speed adjusting screw adjustment Refer to 13A 83 CLEANING THROTTLE BODY PARTS 1 Clean all throttle body parts Do not use solvent to clean the following parts e Throttle position sensor e Accelerator pedal position sensor e Idle speed control body assembly If these parts are immersed in solvent their insulation will deteriorate Wipe them with cloth only Check if the vacuum port or passage is clogged Use compressed air to clean the vacuum passage MPI lt 4G6 gt Throttle Body 13A 101 Throttle position sensor 9EN0592 TPS output TPS power supply Idle position switch 9EN0591 1 2 REASSEMBLY SERVICE POINT PA THROTTLE POSITION SENSOR TPS INSTALLATION Install the TPS so that it faces as shown in the illustration and then tighten it with the screw Connect a multimeter between terminal 1 TPS power supply and terminal 2 TPS output of the TPS connector and check that the resistance increases graduall
21. Does not control the output of the alternator according to an electrical load works as a normal alternator When a problem is detected in the vacuum control solenoid valve ventilation control solenoid valve crank angle sensor or any of the above items traction control is not performed lt Vehicles with TCL gt MPI lt 6A1 gt Troubleshooting 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES 43100870382 Diagnosis item Reference page Oxygen sensor front system 13A 112 Air flow sensor system 13A 113 Intake air temperature sensor system 13A 113 Throttle position sensor system 13A 114 Engine coolant temperature sensor system 13A 115 Crank angle sensor system 13A 116 Top dead centre sensor 13A 117 Vehicle speed sensor system 13A 118 Barometric pressure sensor system 13A 119 Detonation sensor system 13A 120 Injector system 13A 120 Immobilizer system 13A 121 Oxygen sensor rear system 13A 122 Communication wire with A T ECU system lt A T gt 13A 123 Alternator FR terminal system 13A 123 Vacuum control solenoid valve system lt Vehicles with TCL gt 13A 124 Ventilation control solenoid valve system lt Vehicles with TCL gt 13A 125 13A 112 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE FOR DIAGNOSIS CODES Code No 11 Oxygen sensor front system Probable cause Range of Check Malfunction of the oxygen sensor front 3 minute
22. gt D range Increases by 5 50 steps compressor should be operating A C relay A C switch OFF Procedure 13A 149 No 33 Engine After having warmed up Engine is idling OFF Compressor clutch is not operating A C switch ON ON Compressor clutch is operating Transmission 3 500 r min 600 1 000 mV 13A 122 2nd gear lt M T gt L range lt A T gt Drive with throttle widely open ACTUATOR TEST REFERENCE TABLE Inspection item 13100900364 Reference page Drive contents Inspection contents Normal condition Inspection procedure No Cut fuel to No 13A 120 1 injector Injectors Engine After having warmed up Engine is idling Cut the fuel supply to each injector in turn and check cylinders which don t affect idling Idling condition Code No becomes different 41 becomes unsta ble Cut fuel to No 2 injector Cut fuel to No 3 injector Cut fuel to No 4 injector Cut fuel to No 5 injector Cut fuel to No 6 injector Inspection item MPI lt 6A1 gt Troubleshooting Drive contents Inspection contents Normal condition Inspection procedure No 13A 167 Reference page Fuel pump Fuel pump operates and fuel is recircu lated Engine Cranking Fuel pump Forced driving Inspect according to both the above conditions Pinch the return hose with fin
23. 3 2 3 8V Vehicle speed sensor e Ignition switch ON e Move the vehicle slowly forward 0 lt 5V Changes repeatedly 13A 172 MPI lt 6A1 gt Troubleshooting Terminal No Check item Check condition Engine condition Normal condition 87 Idle position switch Ignition switch Set throttle valve 0 1V ON to idle position Slightly open AV or more throttle valve Top dead centre sensor Engine Cranking 0 4 3 0V Engine Idle speed 0 5 2 0V Crank angle sensor Engine Cranking 0 4 4 0V Engine Idle speed 1 5 2 5V Air flow sensor Engine Idle speed 2 2 3 2V Engine r min 2 500r min Inhibitor switch lt A T gt Ignition switch Set selector lever ON to Por N Set selector lever to Other than P or N MPI lt 6A1 gt Troubleshooting 13A 173 CHECK CHART FOR RESISTANCE AND CONTINUITY BETWEEN TERMINALS 1 Turn the ignition switch to OFF 2 Disconnect the engine ECU connector 3 Measure the resistance and check for continuity between the terminals of the engine ECU harness side connector while referring to the check chart NOTE 1 When measuring resistance and checking continuity a harness for checking contact pin pressure should be used instead of inserting a test probe 2 Checking need not be carried out in the order given in the chart Caution If the terminals that should be checked are mistaken or if connector terminals
24. 40 km h Front left wheel speed sensor Engine running Selector lever position Vehicle stopped 0 km h Driving at 40 km h 40 km h Rear right wheel speed sensor Engine running Selector lever position Vehicle stopped 0 km h Driving at 40 km h 40 km h Rear left wheel speed sensor Engine running Selector lever position Vehicle stopped 0 km h Driving at 40 km h 40 km h Engine speed Ignition switch ON Engine idling Engine speeds displayed on the MUT II and tachome ter are identical Steering angle Steering wheel position Ignition switch ON Turned 90 to the right R 88 deg or R 92 deg Turned 90 to the left L 88 deg or L 92 deg Steering straight ahead point learning Steering wheel position Ignition switch ON Immediately after ignition switch is ON OFF Immediately after city driving ON Slip control TCL switch ON Driving on low frictional resistance road TCL indicator lamp illuminated ON TCL indicator lamp switched off Trace control TCL switch ON Driving on winding road TCL indicator lamp illuminated ON TCL indicator lamp switched off OFF Steering wheel sensor ST N Steering wheel position Engine idling Neutral position LOW Steering wheel turned 90 from neutral position HIGH Steering wheel sensor ST 1 Steering wheel position Ign
25. Check plunger tip A for deformation and breakage If A is damaged or broken replace it DISTANCE PIECE Check the surface in contact with the nozzle holder body by using minium PRESSURE SPRING Check spring for weakness and breakage 13E 68 DIESEL FUEL Throttle Body THROTTLE BODY REMOVAL AND INSTALLATION 13300760012 A0310070 Removal steps 1 Air hose connection 4 Air intake fitting 2 Intake air temperature sensor 5 Intake fitting gasket connector 6 Throttle body assembly 3 Vacuum hose connection 7 Intake fitting gasket 13F 1 FUEL SUPPLY CONTENTS 13509000197 GENERAL INFORMATION 2 FUEL TANK oora eroa oie etal Bae ieee 3 SPECIAL TOOL 20 ec cece cece eeeeee 2 FUEL FILTER 00ee eee eeeeeeeeues 5 13F 2 FUEL SUPPLY General Information Special Tool GENERAL INFORMATION e The steel fuel tank is located under the floor of the rear seats to provide increased safety and increase the amount of luggage compartment space e The fuel tank has been equipped with a valve assembly which incorporates a fuel cut off valve to prevent fuel from leaking out in the event of a collision and a two way valve for adjusting the pressure inside the fuel tank SPECIAL TOOL Number Name 13500010120 A plastic snap fitting hose high pressure fuel hose has been adopted between the fuel pump assembly and the fuel filter assembly in petrol powered vehicles in orde
26. Check the throttle position sensor output voltage Standard value 400 1 000 mV If there is a deviation from the standard value check the throttle position sensor and the related harness Remove the thickness gauge Turn the ignition switch to OFF Disconnect the MUT IL MPI lt 4G6 gt On vehicle Service 13A 83 oND 0 aN gt A FIXED SAS ADJUSTMENT 13100150301 NOTE 1 The fixed SAS should not be moved unnecessarily it has been precisely adjusted by the manufacturer 2 If the adjustment is disturbed for any reason readjust as follows Loosen the tension of the accelerator cable sufficiently Back out the fixed SAS lock nut Turn the fixed SAS counterclockwise until it is sufficiently backed out and fully close the throttle valve Tighten the fixed SAS until the point where the throttle lever is touched i e the point at which the throttle valve begins to open is found From that point tighten the fixed SAS 1 1 4 turn While holding the fixed SAS so that it doesn t move tighten the lock nut securely Adjust the tension of the accelerator cable Adjust the basic idling speed Adjust the idle position switch and the throttle position sensor P 13A 81 BASIC IDLE SPEED ADJUSTMENT 13100180348 3 NOTE 1 The standard idling speed has been adjusted by the speed adjusting screw SAS by the manufacturer and there should usually be no need for readjustment 2 If the adjustment has
27. Check trouble symptom NG Y Check the harness wire between the engine ECU and the pomp operation sensor connector and repair if necessary Code No 19 Pump operation sensor system intermittent fault Probable cause Range of Check e No open circuit in pump operation sensor e Injection pump speed 650 r min or more e Ignition switch ST signal OFF Set Conditions e Abnormal number of pump operation sensor signal pulses counted during two full engine rotations e Pulse count abnormality occurs 10 times or more NG Check the following connectors m gt Repair C 53 B 63 OK Y Check trouble symptom NG Y NG Check the harness wire between the engine ECU and the pump Repair operation sensor connector OK Y Replace the engine ECU Malfunction of the pump operation sensor Poor contact in pump operation sensor connector or malfunction of circuit Malfunction of pump operation sensor circuit shielding Malfunction of the engine ECU DIESEL FUEL Troubleshooting Code No 21 Crank angle sensor system 13E 15 Probable cause Range of Check e Injection pump speed 500 r min or more Set Conditions e No crank angle sensor signal pulses input during two full engine rotations Measure at the crank angle sensor connector B 77 e Connect the connector Use the test harness MD998478 e Voltage between 2 and earth Engine cranking
28. Code No 21 Inspection item MPI lt 4G6 gt Troubleshooting Inspection contents Normal condition Inspection procedure No 13A 63 Reference page Crank angle sensor Engine Cranking Tachometer Connected Compare the engine speed readings on the tachometer and the MUT II Accord Engine Idling Idle position switch ON When engine coolant temperature is 20 C 1 275 1 475 rpm When engine coolant temperature is 0 C 1 225 1 425 rpm When engine coolant temperature is 20 C 1 100 1 300 rpm When engine coolant temperature is 40 C 950 1 150 rpm When engine coolant temperature is 80 C 650 850 rpm Code No 22 13A 17 Barometric pressure sensor Ignition switch ON At altitude of O0 m 101 kPa At altitude of 600 m 95 kPa At altitude of 1 200 m 88 kPa At altitude of 1 800 m 81 kPa Idle position switch Ignition switch ON Check by operating accelerator pedal repeatedly Throttle valve Set to idle position ON Throttle valve Slightly open Procedure No 28 Power steering fluid pressure switch Engine Idling Steering wheel stationary Steering wheel turning Procedure No 31 A C switch Engine Idling when A C switch is ON A C compressor should be operating A C switch OFF A C switch ON ON Procedure No 32 Inhibitor swi
29. Contrast with standard wave pattern Probable cause Solenoid coil back electromotive force is low or doesn t Short in the injector solenoid appear at all Point B Solenoid type spill valve drive cycle Check that cycle time T becomes shorter when the engine speed increases Accelerator pedal position sensor with built in idle position switch 1 fe ON 1 Pf DIESEL FUEL On vehicle Service 13E 53 A1610290 ON VEHICLE SERVICE 13300120056 EVACUATION OF WATER FROM FUEL FILTER Water is in the filter when fuel filter warning lamp lights Evacuate water by the following procedures 1 Loosen the water level sensor 2 Operate the hand pump to drain the water and then tighten the water level sensor to the specified torque Tightening torque 13 Nm EVACUATION OF AIR FROM FUEL LINE 13300130059 Bleed the air from the fuel line after refilling the fuel When fuel is drained for service When fuel filter is replaced When main fuel line is removed Loosen fuel filter air plug Place rags around air plug hole Operate hand pump repeatedly until no bubbles come from plug hole Tighten air plug 3 Repeat until hand pump operation becomes stiff FUEL FILTER CARTRIDGE REPLACEMENT 13300320036 N ooo Refer to GROUP 13F ACCELERATOR PEDAL POSITION SENSOR AND IDLE POSITION SWITCH 1 ADJUSTMENT 13300600017 1 Connect the MUT II to the diagnosis connector 2 Turnthe ignition switch to ON b
30. Engine Running at 2 500 r min after warmed up Check using a digital type voltmeter 0 lt 0 8V Changes repeatedly Backup power supply Ignition switch OFF System voltage Sensor impressed voltage Ignition switch ON 4 5 5 5V Ignition switch IG Ignition switch ON System voltage Engine coolant temperature sensor Ignition switch When engine ON coolant tempera ture is 0 C 3 2 3 8V When engine coolant tempera ture is 20 C When engine coolant tempera ture is 40 C When engine coolant tempera ture is 80 C Throttle position sensor Ignition switch Set throttle valve ON to idle position 0 3 1 0V Fully open throttle valve 4 5 5 5V Barometric pressure sensor Ignition switch When altitude is ON Om 3 7 4 3V When altitude is 1 200m 3 2 3 8V Vehicle speed sensor e Ignition switch ON e Move the vehicle slowly forward 0 lt 5V Changes repeatedly 13A 70 Terminal No Check item MPI lt 4G6 gt Troubleshooting Check condition Engine condition Normal condition 87 Idle position switch Ignition switch Set throttle valve 0 1V ON to idle position Slightly open AV or more throttle valve Camshaft position sensor Engine Cranking 0 4 3 0V Engine Idle speed 0 5 2 0V Crank angle sensor Engine Cranking 0 4 4 0V Engine Idle speed
31. Malfunction of the engine ECU N Check the ISC servo DA Replace Refer to P 13A 95 york NG Measure at the ISC servo connector B 10 __ Check the harness wire between control relay and ISC servo con e Disconnect the connector and measure at the harness side nector and repair if necessary e Voltage between 2 and earth and 5 and earth Ignition switch ON OK System voltage JoK NG NG Measure at the engine ECU connector C 34 m Check the following _ Repair e Disconnect the connector measure at the harness side connector B 10 e Voltage between each of 4 5 17 18 and earth Ignition switch OK ON OK System voltage Check trouble symptom y NG f Check the following Repair Check harness wire between engine ECU and ISC servo connector connector C 34 and repair if necessary OK y NG Check trouble symptom __ Replace the engine ECU MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 35 Purge control solenoid valve system 13A 51 Probable cause The purge control solenoid valve controls the purging of air from the canister located inside the intake manifold NG Check the purge control solenoid valve Refer to GROUP 17 Emission Control System e Malfunction of solenoid valve e Improper connector contact short circuited harness wire e Malfunction of the engine
32. Repair D 03 C 90 C 35 OK Y NG Check trouble symptom __ Check the harness wire between combination meter and engine ECU and repair if necessary INSPECTION PROCEDURE 4 The engine warning lamp remains illuminating and never Probable cause goes out In cases such as the above the cause is probably that the engine ECU is detecting Short circuit between the engine warning lamp and a problem in a sensor or actuator or that one of the malfunctions listed at right has engine ECU occurred e Malfunction of the engine ECU Yes MUT II Self Diag code e Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No NG Measure at the combination meter connector D 03 __ Check the harness wire between combination meter and engine e Disconnect the connector and measure at the harness side ECU connector and repair if necessary e Disconnect the engine ECU connector e Continuity between 16 and earth OK No continuity JOK Replace the engine ECU MPI lt 6A1 gt Troubleshooting 13A 131 INSPECTION PROCEDURE 5 No initial combustion starting impossible Probable cause In cases such as the above the cause is probably that a spark plug is defective Malfunction of the ignition system or that the supply of fuel to the combustion chamber is defective In addition foreign materials water kerosene etc may be m
33. Repair OK engine ECU and the oxygen sensor y front connector Check trouble symptom JoK ye NG Replace the engine ECU Check the harness wire between the engine ECU and __ Repair the oxygen sensor front connector OK 7 Y _ Check the harness wire between the Replace the engine ECU oxygen sensor front and the earth and repair if necessary MPI lt 6A1 gt Troubleshooting Code No 12 Air flow sensor system Probable cause 13A 113 Range of Check e Engine speed is 500 r min or more Set conditions e Sensor output frequency is 3 Hz or less for 4 seconds Malfunction of the air flow sensor Improper connector short circuited harness wire contact open circuit or of the air flow sensor Malfunction of the engine ECU NG m Repair 1 NG Measure at the air flow sensor con Check the air flow sensor circuit nector B 12 Refer to P 13A 159 INSPEC e Connect the connector Use TION PROCEDURE 49 the test harness MB991709 1 Voltage between 3 and earth pe 2 NG NG Engine Idling Measure at the engine ECU con Check the following connector OK 2 2 3 2 V nector C 33 B 12 2 Voltage between 7 and earth e Connect the connector OK 0 1 V Engine idling e Voltage between 19 and earth of 6 9 V 2 000 r min Ignition switch ON Check troubi 1 t Jok OK 6 9 V eck trouble symptom NG P OK Replace the engine ECU
34. Specified sealant 3M NUT Locking Part No 4171 or equivalent Install the engine coolant temperature sensor and tighten it to the specified torque Tightening torque 29 Nm THROTTLE POSITION SENSOR CHECK 13100320276 Disconnect the throttle position sensor connector Measure the resistance between the throttle position sensor side connector terminal 1 and terminal 4 Standard value 3 5 6 5 kQ Measure the resistance between the throttle position sensor side connector terminal 2 and terminal 4 Normal condition Throttle valve slowly open Changes smoothly in until fully open from the idle proportion to the opening position angle of the throttle valve 4 If the resistance is outside the standard value or if it doesn t change smoothly replace the throttle position sensor NOTE For the throttle position sensor adjustment procedure refer to P 13A 81 IDLE POSITION SWITCH CHECK 13100330262 1 Disconnect the throttle position sensor connector 2 Check the continuity between the throttle position sensor connector side terminal 3 and terminal 4 Normal condition Accelerator pedal Continuity Depressed Non conductive Released Conductive 0 Q 3 If out of specification replace the throttle position sensor NOTE After replacement the idle position switch and throttle position sensor should be adjusted Refer to P 13A 81 13A 92 MPI lt 4G6 gt On vehicle Service Equipment side nar OXYGEN S
35. The engine doesn t idle at the usual correct speed Engine stall Die out The engine stalls when the foot is taken from the accelerator pedal regardless of whether the vehicles is moving or not Engine stall Pass out The engine stalls when the accelerator pedal is depressed or while it is being used Driving Hesitation Sag Hesitation is the delay in response of the vehicle speed engine speed that occurs when the accelerator is depressed in order to accelerate from the speed at which the vehicle is now traveling or a temporary drop in vehicle speed engine speed during such acceleration Serious hesitation is called sag Hesitation Normal Vehicle nitial ac speed celerator Time 1FU0223 Poor acceleration Poor acceleration is inability to obtain an acceleration corresponding to the degree of throttle opening even though acceleration is smooth or the inability to reach maximum speed Stumble Engine speed increase is delayed when the accelerator pedal is initially depressed for accelera tion Normal Vehicle speed Initial ac celerator pedal de pression Stumble 1FUQ224 13A 128 Items MPI lt 6A1 gt Troubleshooting Symptom Driving Shock The feeling of a comparatively large impact or vibration when the engine is accelerated or decelerated Surge This is repeated surging ahead during constant speed tr
36. e Disconnect the TPS NG NG connector and measure at Check the following con Repair the harness side nectors e Between terminal 4 and B 07 C 39 body earth JoK OK 4 8 5 2 V NG NG Check trouble symptom Check the harness between Repair JOK the TPS and the engine ECU aa T NG Replace and repair if necessary Refer to GROUP 13A On JOK vehicle Service JoK Replace the engine ECU Measure the voltage at en gine ECU connector C 39 e Ignition switch ON ine NG NG ee enn ECU Check the following con gt Repair eis tors e Between terminal 84 and nec body earth B 07 C 39 Move the accelerator lever JOK OK 0 3 1 0 V Set to idle NG position Check trouble symptom Check the harness between 4 5 5 5 V Fully open the TPS and the engine ECU and repair if necessary JoK NG i Check the following con Repair nector C 39 JOK NG Check trouble symptom m Replace the engine ECU TCL Troubleshooting 13H 7 Code No 13 TPS circuit system Probable cause This diagnosis code is output if the TPS opening angle is 20 or greater than the Malfunction of APS APS opening angle because of a short in the TPS or an open circuit in the APS Malfunction of TPS If there is an open circuit in the APS diagnosis code No 11 is output at the same Malfunction of harness or connector time Accordingly
37. Barometric pressure sensor Detonation sensor Injector Ignition coil power transister Immobilizer system METHOD OF READING AND ERASING DIAGNOSIS CODES Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points INSPECTION USING MUT II DATA LIST AND ACTUATOR TESTING 1 Ci Carry out inspection by means of the data list and the actuator test function If there is an abnormality check and repair the chassis harnesses and componenis After repairing re check using the MUT II and check that the abnormal input and output have returned to normal as a result of the repairs Erase the diagnosis code memory Remove the MUT II Start the engine again and carry out a road test to confirm that the problem has disappeared MPI lt 4G6 gt Troubleshooting 13A 11 FAIL SAFE FUNCTION REFERENCE TABLE When the main sensor malfunctions are detected by the diagnosis function the vehicle is controlled by means of the pre set control logic to maintain safe conditions for driving 13100910299 Malfunctioning item Control contents during malfunction Air flow sensor 1 Uses the throttle position sensor signal and engine speed signal crank angle sensor signal to take reading of the basic injector drive time and basic ignition timing from the pre set mapping 2 Fixes the ISC servo in the appointed position so idle control is not performed Intake air temperature sensor Controls
38. NG gt Measure at the engine ECU connector C 36 e Check the following Repair e Disconnect the connector and measure at the harness side connector C 36 e Earth the terminal No 36 OK OK The engine warning lamp illuminates NG Check trouble symptom Na Y NG Check a burnt out bulb Replace Replace the engine ECU OK 1 NG Measure at the combination meter connector D 03 __ Check the engine warning lamp power supply circuit and repair e Disconnect the connector and measure at the harness side if necessary e Voltage between 4 and earth Ignition switch ON OK System voltage OK ko NG Check the following connectors m gt Repair D 03 C 90 C 36 OK Y NG Check trouble symptom __ Check the harness wire between combination meter and engine ECU and repair if necessary INSPECTION PROCEDURE 4 The engine warning lamp remains illuminating and never Probable cause goes out In cases such as the above the cause is probably that the engine ECU is detecting Short circuit between the engine warning lamp and a problem in a sensor or actuator or that one of the malfunctions listed at right has engine ECU occurred e Malfunction of the engine ECU Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No NG Measure at the combination meter connector D 03 __ C
39. OK Y NG MUT II Data list _ Check the engine coolant temperature sensor system 21 Engine coolant temperature sensor Refer to P 13A 62 Refer to P 13A 16 INSPECTION PROCEDURES FOR DIAGNO SIS CODE 21 OK Li NG MUT II Data list __ Check the ignition switch ST system lt M T gt 18 Ignition switch ST Refer to P 13A 62 Refer to P 13A 47 INSPECTION PROCEDURE 29 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 48 INSPECTION PROCEDURE 30 INSPECTION PROCEDURE 40 Check if hunting occurs Clean the throttle body Refer to P 13A 81 Y Check and adjust the fixed SAS Refer to P 13A 83 Y Check trouble symptom NG Y Inspect the intake of air into the air intake system e Broken intake manifold gasket Broken air intake hose Broken vacuum hose Positive crankcase ventilation valve does not operate 13A 54 INSPECTION PROCEDURE 41 MUT II Check if idling speed is unstable MPI lt 4G6 gt Troubleshooting NG MUT II Data list 26 Idle position switch Refer to P 13A 63 NG kg MUT II Data list 13 Intake air temperature sensor Refer to P 13A 62 NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 63 OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 62 OK Y NG MUT II Actuator test 08 Purge control solenoid valv
40. OK we u z NG Repai Check the harness wire between engine ECU and accelerator pedal Check the following Repalr position sensor connector connector B 41 k Ni Jok Ko G Replace th ine ECU i Check trouble symptom epl ceithe engins ECU Repair NG Y Replace the engine ECU INSPECTION PROCEDURE 30 Ignition switch ST system lt M T gt Probable cause The ignition switch ST inputs a HIGH signal to the engine ECU while the engine is Malfunction of ignition switch cranking Improper connector contact open circuit or The engine ECU controls fuel injection etc during starting based on this input short circuited harness wire Malfunction of the engine ECU 1 NG NG Measure at the engine ECU connector C 39 gt Check the following Repair e Disconnect the connector and measure at the harness side connector C 92 1 Voltage between 71 and earth Ignition switch START 2 NG OK OK 8V or more y 2 Continuity between 91 and earth Check trouble symptom OK Continuity NG OK Y NG T NG Check harness wire be Repair Check the following Repair tween the engine ECU connector C 39 and ignition switch con OK nector JoK Check trouble symptom NG Check the ignition switch y Refer to GROUP 54 Ignition Switch and Immobilizer system Replace the engine ECU L Chec
41. Probable cause In cases as the above the cause is probably that the ignition system air fuel mixture idle speed control ISC or compression pressure is defective Because the range of possible causes is broad inspection is narrowed down to simple items Yes Were the battery terminals disconnected No Y Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y Yes Does idling speed fluctuate excessively No Y NG Check the ISC servo for operation sound Refer to P 13A 199 __ OK Y NG Check the injector for operation sound gt OK Y MUT II Check if idling speed is unstable Refer to P 13A 153 INSPECTION PROCEDURE 41 OK Y NG Check the ignition timing Refer to GROUP 11B On vehicle Service OK Y Malfunction of the ignition system Malfunction of air fuel ratio control system Malfunction of the ISC system Malfunction of the purge control solenoid valve system Malfunction of the EGR solenoid valve system Poor compression Drawing air into exhaust system After warming up let the engine run at idling for 10 minutes Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check if hunting occurs Refer to P 13A 153 INSPECTION PROCEDURE 41 Check the ISC servo system Refer to P 13A 151 INSPECTION PROCEDURE 35 Check the injector system Refer to P 1
42. Refer to GROUP 54 Ignition Yes Key and Immobilizer T NG Check the following connectors m gt Repair C 20 C 66 C 68 C 83 C 81 C 38 OK Y Check trouble symptom NG d NG Check the harness wire between engine ECU and diagnosis con Repair nector OK Y OK NG Check the harness wire between engine ECU and immobilizer Check the harness wire _ _ _ Repair ECU between engine ECU and NG earth 1 JoK Repair Check the power supply and ignition switch IG system Refer to P 13A 45 INSPECTION PROCEDURE 26 13A 30 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 3 The engine warning lamp does not illuminate right after Probable cause the ignition switch is turned to the ON position Because there is a burnt out bulb the engine ECU causes the engine warning lamp Burnt out bulb to illuminate for five seconds immediately after the ignition switch is turned to ON Defective warning lamp circuit If the engine warning lamp does not illuminate immediately after the ignition switch Malfunction of the engine ECU is turned to ON one of the malfunctions listed at right has probably occurred NG MUT II Data list Check the engine ECU power supply and earth circuit 16 engine ECU power supply voltage Refer to P 13A 62 Refer to P 13A 58 INSPECTION PROCEDURE 45 Jok OK
43. Terminal No Check item MPI lt 6A1 gt Troubleshooting Check condition Engine condition 13A 171 Normal condition 72 Intake air temperature sensor Ignition switch ON When intake air temperature is 0 C 3 2 3 8V When intake air temperature is 20 C When intake air temperature is 40 C When intake air temperature is 80 C Oxygen sensor rear Transmission 2nd gear lt M T gt L range lt A T gt Engine r min 3 500 r min or more Driving with the throttle valve widely open Oxygen sensor front Engine Running at 2 500 r min after warmed up Check using a digital type voltmeter 0 lt 0 8V Changes repeatedly Backup power supply Ignition switch OFF System voltage Sensor impressed voltage Ignition switch ON 4 5 5 5V Ignition switch IG Ignition switch ON System voltage Engine coolant temperature sensor Ignition switch ON When engine coolant tempera ture is 0 C 3 2 3 8V When engine coolant tempera ture is 20 C When engine coolant tempera ture is 40 C When engine coolant tempera ture is 80 C Throttle position sensor Ignition switch ON Set throttle valve to idle position 0 3 1 0V Fully open throttle valve 4 5 5 5V Barometric pressure sensor Ignition switch ON When altitude is Om 3 7 4 3V When altitude is 1 200m
44. 07 Fuel pump Refer to P 13A 65 OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 62 INSPECTION PROCEDURE 38 Check the power supply and ignition switch IG system Refer to P 13A 45 INSPECTION PROCEDURE 26 Check timing belt for breakage Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the crank angle sensor system Refer to P 13A 17 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 22 Check the fuel pump system Refer to P 13A 46 INSPECTION PROCEDURE 27 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Ignition system Inspection of no initial combustion Check ignition circuit system Refer to P 13A 50 INSPECTION PROCEDURE 33 OK NG Check the ignition timing when cranking OK Approx 5 BTDC Check that the crank angle sensor is installed properly MPI lt 4G6 gt Troubleshooting 13A 53 INSPECTION PROCEDURE 39 MUT II Check if uncomplete combustion occurs Yes MUT II Self Diag code m e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODE Are diagnosis codes displayed No Y NG MUT II Actuator test Check the fuel pump system 07 Fuel pump Refer to P 13A 65 Refer to P 13A 46 INSPECTION PROCEDURE 27
45. 4 earth of the TPS connector when the throttle valve is fully closed and fully open Normal condition Throttle valve condition Continuity Fully closed Continuity Fully open No continuity If there is no continuity when the throttle valve is fully closed turn the TPS body anti clockwise and then check again If there is an abnormality replace the TPS 13E 1 DIESEL FUEL CONTENTS 13309000047 GENERAL INFORMATION 2 Engine Coolant Temperature Sensor CHECK a pa a ee ot teats tee a ten S Sars 57 SERVICE SPECIFICATIONS 4 Accelerator Pedal Position Sensor Check 57 SEALANT ooo cc ccc ccc ecccccccccccenccccncces 4 Idle Position Switch 1 Check 58 Idle Position Switch 2 Check 58 SPECIAL TOOLS wii e2ecieeli reer eager sees 5 Solenoid type Spill Valve Check 59 TROUBLESHOOTING occceeceeeccccnes 6 Timing Control Solenoid Valve Check 59 Diesel Fuel Temperature Sensor Check 59 ON VEHICLE SERVICE 02005 53 Pump Operation Sensor Check 60 Evacuation of Water from Fuel Filter 53 Injection Timing Correction Resistor Check 60 Evacuation of Air from Fuel Line 53 Injection Rate Correction Resistor Check 60 Fuel Filter Cartridge Replacement 53 Fuel Cut Solenoid Valve Check 60 Accelerator Pedal Position Sensor and Idle Throttle Solenoid
46. C Pump operation sensor resistance Q 215 245 at 20 C Injection timing correction resistor resistance kQ 0 1 2 5 at 20 C Injection rate correction resistor resistance kQ 0 1 2 5 at 20 C Fuel cut solenoid valve resistance Q 8 10 Throttle solenoid valve resistance Q SEALANT 36 44 at 20 C Item Specified sealant 13300050010 Remark Engine coolant temperature sensor 3M Nut Locking Part No 4171 or equivalent Drying sealant threaded portion SPECIAL TOOLS DIESEL FUEL Special Tools Number Name 13E 5 13300060068 Use MB991502 MUT II sub assembly e Reading diagnosis code e Checking the electronically controlled fuel injection system 8991348 MB991348 Test harness set Inspection using an analyzer MD998478 Test harness 3 pin triangle Inspection using an analyzer MB990767 End yoke holder MD998719 Crankshaft pulley holder pin Fuel injection pump sprocket holding MD998388 Sprocket puller Fuel injection pump sprocket removal 13E 6 DIESEL FUEL Troubleshooting TROUBLESHOOTING 13300370024 DIAGNOSIS TROUBLESHOOTING FLOW Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points 7 DIAGNOSIS FUNCTION 43300380027 LSS ENGINE WARNING LAMP CHECK ENGINE LAMP If an abnormality occurs in any of the following items which are related to the electron
47. Code No 64 Alternator FR Terminal System Probable cause Range of Check Set Conditions e Open circuit in alternator FR terminal circuit e The alternator FR terminal signal voltage remains high for approximately 20 seconds Malfunction of the engine ECU while the engine is running OK Measure at the alternator connector B 38 Replace the engine ECU e Connect the connector e Voltage between 4 and earth Engine Idling Radiator fan Stopped Headlamp OFF gt ON OK 18 2 4 gt 1 0 1 6 V NG NG NG Measure at the alternator connector B 38 gt Check the following Repair e Disconnect the connector and measure at the harness side connectors B 31 C 36 e Voltage between 4 and earth OK Ignition switch ON ORs eraa Check trouble symptom Of NG Y NG Check the following connector B 38 m Repair OK NG Y Check the harness wire gt Repair Check trouble symptom between the engine ECU NG and the alternator con nector Y NG OK Check the harness wire between the engine ECU and the alternator gt Repair connector OK Replace the engine ECU Replace the alternator 13A 26 MPI lt 4G6 gt Troubleshooting INSPECTION CHART FOR TROUBLE SYMPTOMS Trouble symptom Inspection procedure No 13100880354 Reference page Communication with MUT II is impossible
48. Equipment side connector SSS Accelerator pedal U GX lt gt position sensor GT U Fa QP DFU0688 ENGINE COOLANT TEMPERATURE SENSOR CHECK 43300500027 Caution Be careful not to touch the connector resin section with the tool when removing and installing 1 Remove the engine coolant temperature sensor 2 With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance Standard value 2 1 2 7 kQ at 20 C 0 26 0 36 kQ at 80 C 3 Ifthe resistance deviates from the standard value greatly replace the sensor 4 Apply sealant to threaded portion Specified sealant 3M NUT Locking Part No 4171 or equivalent 5 Install the engine coolant temperature sensor and tighten it to the specified torque Tightening torque 29 Nm ACCELERATOR PEDAL POSITION SENSOR CHECK 13300630016 1 Disconnect the accelerator pedal position sensor connector 2 Measure the resistance between the accelerator pedal position sensor side connector terminal 1 and terminal 4 Standard value 3 5 6 5 kQ 3 Measure the resistance between the accelerator pedal position sensor side connector terminal 2 and terminal 4 Normal condition Depress the accelerator ped Changes smoothly in propor al slowly until fully depressed tion to the opening angle of position from the idle posi the throttle valve tion 13E 58 DIESEL FUEL On vehicle Servic
49. Inspection of no initial combustion Refer to P 13A 52 INSPECTION PROCEDURE 38 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables Check if the injectors are clogged Check if foreign materials water alcohol etc got into fuel Check the compression pressure Check the immobilizer system 13A 32 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 6 Initial combustion but no complete combustion Probable cause starting impossible In such cases as the above the cause is probably that the spark plugs are generating Malfunction of the ignition system sparks but the sparks are weak or the initial mixture for starting is not appropriate Malfunction of the injector system Foreign materials in fuel Poor compression Malfunction of the engine ECU NG Check battery voltage when cranking Check the battery Refer to GROUP 54 Battery OK 8 V or higher OK Y MUT II Check if uncompleted combustion occurs Refer to P 13A 53 INSPECTION PROCEDURE 39 OK M NG Can any sound be heard from the injectors when cranking __ Check the injector system Refer to P 13A 21 INSPECTION PRO OK CEDURE FOR DIAGNOSIS CODE 41 M Yes NG Is starting good if the engine is cranked with the accelerator pedal Check ISC servo for op Check the IS
50. M NG Check the harness wire gt Repair between the engine ECU and the vehicle speed sensor connector 0K Replace the engine ECU 1 NG NG m Check the following gt Repair connectors B 65 lt M T gt C 90 C 135 2 NG C 131 i Check trouble symptom 3 NG NG NG Check the harness wire gt Repair between the vehicle speed sensor and ignition switch connector 0K Check the ignition switch Refer to GROUP 54 Ignition Switch NG Check the following gt Repair connectors B 65 lt M T gt C 48 C 39 OK y Check trouble symptom NG Y NG Check the harness wire gt Repair between the engine ECU and the vehicle speed sensor connector JoK Replace the engine ECU NG Check the following connector B 65 lt M T gt m gt Repair OK Y Check trouble symptom NG Check the harness wire between the vehicle speed sensor and the earth and repair if necessary MPI lt 6A1 gt Troubleshooting Code No 25 Barometric pressure sensor system Probable cause 13A 119 Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts e Battery voltage is 8 V or more Set conditions e Sensor output voltage is 4 5 V or mo
51. OFF Engine speed is 3 000 r min or more Driving under high engine load conditions Set conditions e Sensor output voltage does not change for 4 seconds no pulse signal input Check the vehicle speed sensor Refer to GROUP 54 Combina tion Meters NG m Replace Malfunction of the vehicle speed sensor Improper connector contact open circuit or short circuited harness wire of the vehicle speed sensor circuit Malfunction of the engine ECU JoK 1 NG NG Measure at the vehicle speed sensor connector B 66 lt M T gt Check the following gt Repair B 67 lt A T gt connectors e Disconnect the connector and measure at the harness B 65 lt M T gt C 90 C 135 side 2 NG C 131 1 Voltage between 1 and earth Ignition switch ON OK OK System voltage y 2 Voltage between 3 and earth Ignition switch ON Check trouble symptom OK 4 8 5 2 V 3 Continuity between 2 and earth 3 NG yne n OK Continuity i NG Check the following Repair connectors B 66 lt M T gt B 67 lt A T gt C 40 OK Y Check trouble symptom NG M NG Check the harness wire gt Repair between the engine ECU and the vehicle speed sensor connector JOK Replace the engine ECU Check the harness wire gt Repair between the vehicle speed sensor and ignition swi
52. OK Continuity M Check trouble symptom OK NG 1 NG Check the harness wire between the Repair engine ECU and the oxygen sensor rear connector JK Replace the engine ECU _____ _ Check the harness wire between the y NG oxygen sensor rear and the earth and Check the following connectors __________ Repair Pair if necessary C 85 C 40 OK Y Check trouble symptom NG Y NG Check the harness wire between the engine ECU and Repair the oxygen sensor rear connector OK Y Replace the oxygen sensor rear Y Check trouble symptom NG Y Replace the engine ECU MPI lt 4G6 gt Troubleshooting 13A 25 Code No 61 Communication wire with A T ECU system Probable cause lt A T gt Range of Check e Malfunction of the harness wire and the connector e 60 seconds or more have passed immediately after engine was started e Malfunction of the engine ECU e Engine speed is approx 50 r min or more e Malfunction of the A T ECU Set conditions The voltage of the torque reduction request signal from the A T ECU is LOW for 1 5 seconds or more NG Check the following connectors m gt Repair C 34 C 38 C 30 OK Y Check trouble symptom NG d OK Check the harness wire between the engine ECU and the A T ECU _ Replace the engine ECU connector NG Y Y Check trouble symptom Repair NG Y Replace the A T ECU
53. Repair NG m gt Repair Yes e Carry out engine ECU troubleshooting Refer to GROUP 13A Troubleshooting OK Y Check trouble symptom NG Y Inspect the harness between the TCL ECU and the engine ECU OK y Is a diagnosis code output from the engine ECU No Y Replace the TCL ECU Y NG Check trouble symptom __ Replace the engine ECU Code No 74 A T ECU communication circuit system Probable cause This diagnosis code is output if an error is detected in the communication contents because of an open or short circuit in the serial communication circuit between the TCL ECU and the A T ECU a malfunction of ECU and a defective shielding of the e shield wire Malfunction of harness or connector Malfunction of TCL ECU Malfunction of A T ECU NG Check the following connectors C 10 C 51 C 49 C 29 C 30 m gt Repair NG m gt Repair Yes e Carry out A T ECU troubleshooting OK Y Check trouble symptom NG Y Inspect the harness between the TCL ECU and the A T ECU OK Y Is a diagnosis code output from the A T ECU No Y Refer to GROUP 23 Troubleshooting Replace the TCL ECU NG Check trouble symptom e Replace the A T ECU TCL Troubleshooting 13H 15 Code No 76 ABS circuit system Probable cause Th
54. Replace the TCL ECU nated when TCL ECU connector C 11 is disconnected and the ignition switch is turned to ON Yes y OK NG Check the following connectors Check trouble symptom Check the harness between the com D 03 C 50 C 11 bination meter and the TCL ECU and jna repair if necessary Repair 13H 20 TCL Troubleshooting Inspection Procedure 7 TCL OFF indicator lamp does not illuminate even if the Probable cause TCL switch is continuously pressed to the OFF side while the engine is idling If the indicator lamp does not illuminate when the switch is operated there is a Malfunction of harness or connector malfunction in the switch switch circuit or in the TCL ECU e Malfunction of TCL switch e Malfunction of TCL ECU OK MUT II_ Data list m Replace the TCL ECU e 25 TCL OFF switch e Press the TCL switch continuously to the OFF side while the engine is idling OK ON is displayed NG M NG Check the following connectors m gt Repair C 11 C 75 C 98 OK M NG OK Check trouble symptom Inspect the harnesses between the gt Repair TCL ECU and the TCL switch and be tween the TCL switch and the body earth JoK TCL switch component inspection Re fer to P 13H 28 Inspection Procedure 8 TCL illuminates in the TCL operation range but Probable cause torque is not
55. Symptom Probable cause Remedy Fuel pressure too low Fuel pressure drops after racing No fuel pressure in fuel return hose Clogged fuel filter Replace fuel filter Fuel leaking to return side due to poor fuel regulator valve seating or settled spring Replace fuel pressure regulator Low fuel pump delivery pressure Replace fuel pump Fuel pressure too high Binding valve in fuel pressure regulator Replace fuel pressure regulator Clogged fuel return hose or pipe Clean or replace hose or pipe Same fuel pressure when vacuum hose is connected and when disconnected Damaged vacuum hose or clogged nipple Replace vacuum hose or clean nipple MPI lt 4G6 gt On vehicle Service 13A 87 14 Stop the engine and check change of fuel pressure gauge reading Normal if the reading does not drop within 2 minutes If it does observe the rate of drop and troubleshoot and repair according to the table below Symptom Probable cause Remedy Fuel pressure drops gradually after Leaky injector Replace injector engine is stopped Leaky fuel regulator valve seat Replace fuel pressure regulator Fuel pressure drops sharply Check valve in fuel pump is heldopen Replace fuel pump immediately after engine is stopped 15 Release residual pressure from the fuel pipe line Refer to P 13A 88 16 Remove the fuel pressure gauge and special tool from the delivery pipe Cauti
56. if only diagnosis code No 11 is output the cause is probably an Malfunction of engine ECU abnormality in the TPS circuit system Yes MUT II Self Diag code Code No 11 APS circuit system Is TCL diagnosis code No 11 output Refer to P 13H 5 No T NG Check the TPS gt Replace Refer to GROUP 13A On vehicle Service OK Y NG NG Measure the voltage at engine ECU connector C 39 gt Check the following connectors Repair e Ignition switch ON B 07 C 39 e Connect the engine ECU connector OK e Between terminals 84 and body earth j e Move the accelerator lever OK 0 3 1 0 V Set to idle position Ches ouble Symon 4 5 5 5 V Fully open oo OK Check the harness between the TPS and the engine ECU and repair if necessary y OK Check the following connector Check trouble symptom C 39 pne NG Y Replace the engine ECU Repair Code No 23 Stop lamp switch circuit system Probable cause This diagnosis code is output if the stop lamp switch remains ON for a continuous Malfunction of stop lamp switch period of 15 minutes or more or for a continuous period of 1 minute or more when Malfunction of harness or connector driving at a speed of 10 km h or more because of a short circuit or defective adjustment Malfunction of TCL ECU of the stop lamp switch This diagnosis code No may also occur while driving in traffic jams
57. let the engine run at idling for 10 minutes Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Clean the throttle valve area Refer to P 13A 81 e Check and adjust the fixed SAS Refer to P 13A 83 Check if the unstable idling Rough idling hunting Refer to P 13A 34 INSPECTION PROCEDURE 8 Check the ISC servo system Refer to P 13A 50 INSPECTION PROCEDURE 34 Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGNOSIS CODE 41 Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Yes Were the battery terminals disconnected gt No Y Yes MUT II Self Diag code gt Are diagnosis codes displayed No 1 Yes Does the engine stall right after the accelerator pedal is released __ No Y No Is engine idling stable after the warming up e Yes 1 NG Check the ISC servo for operation sound Refer to P 13A 95 __ OK Y NG Check the injector for operation sound gt OK Y NG MUT II Data list e 26 Idle position switch Refer to P 13A 63 OK M NG MUT II Data list e 21 Engine coolant temperature sensor Refer to P 13A 62 OK Y NG MUT II Actuat
58. lt A T gt NG e Driving with throttle widely open OK 600 1 000 mV oK MUT II Data list 11 Oxygen sensor front OK 600 1 000 mV when P 13A 162 racing suddenly Refer to JOK OK MUT II Data list 11 Oxygen sensor front OK Repeat 0 400 mV and 600 1 000 mV alternately when idling Refer to P 13A 162 NG Y Check the fuel pressure Refer to P 13A 189 OK Y e Deteriorated catalyst Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check that the crank angle sensor is installed properly Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 Check the intake air temperature sensor system Refer to P 13A 113 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 119 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the oxygen sensor rear system Refer to P 13A 122 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 112 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 Replace the oxygen sensor front y Check trouble symptom NG y Check the following items Check the injectors for operation sound Check the injectors for fuel leakage Check the ignition coil spark plugs spark plug cables Check th
59. lt Ap HIGH PRESSURE FUEL HOSE DISCONNECTION Caution As there will be some pressure remaining in the fuel pipe line cover it with a rag to prevent fuel from spraying out INSTALLATION SERVICE POINTS pA lt MAIN HOSE CONNECTION Insert the main hose as far as the stepped section of the pipe 13F 6 Float Fuel filter assembly FUEL SUPPLY Fuel Filter A16W521 High pressure fuel hose A0310073 B lt q HIGH PRESSURE FUEL HOSE CONNECTION Caution After connecting the high pressure fuel hose pull it gently in the direction of removal to check that the hose is firmly connected INSPECTION 43500290043 WATER LEVEL SENSOR CHECK lt DIESEL POWERED VEHICLES gt 1 Connect the circuit tester to the water level sensor connector 2 The water level sensor is operating correctly if there is continuity when the float is raised and no continuity when it is lowered FUEL FILTER CARTRIDGE REPLACEMENT 13500130147 lt DIESEL POWERED VEHICLES gt 1 Remove the fuel tank cap to release the pressure inside the fuel tank 2 Disconnect the connector and the main hose and then remove the fuel filter assembly from the bracket 3 Remove the water level sensor 4 Use an oil filter wrench to remove the fuel filler cartridge from the fuel filter pump body Caution Cover the cartridge with a rag to prevent fuel from spraying out 5 Install a new filter and bleed the air from fuel line Refer to GROUP 13E
60. nozzle FUEL INJECTION INITIAL PRESSURE CHECK Install the injection nozzle to a nozzle tester Move the lever of the nozzle tester 2 3 times to inject fuel and to bleed the air Gently press down the lever of the nozzle tester and take a reading of the indication value on the pressure gauge at the point where the needle slowly rises and then suddenly drops Standard value 14 710 15 690 kPa 13E 62 DIESEL FUEL On vehicle Service 4 If the fuel injection initial pressure is outside the standard value disassemble the nozzle holder to clean it and then change the thickness of the shim to adjust the fuel injection initial pressure NOTE 1 For disassembly reassembly and adjustment of the nozzle holder refer to P 13E 66 2 There are 10 shims for adjustment with thicknesses in the range of 0 10 0 80 mm 3 When the shim thickness is increased by 0 1 mm the fuel injection initial pressure increases by 2 350 kPa INJECTION SPRAY CONDITION CHECK 13300180023 1 Move the lever of the nozzle tester rapidly 4 6 times per second to eject the fuel continuously Check to be sure that the injection spray comes out evenly in a cone shape injection spray angle is 10 The injection spray patterns shown in the illustration at left are wrong A Injection angle is too large B Bias C Intermittent fuel injection Check to be sure that no fuel drips after injection is completed If there are any drips
61. steps 4 and 5 Unplug the bypass passage inlet Attach the air intake hose Use the MUT II to erase the self diagnosis code 0 Adjust the basic idle speed Refer to P 13A 188 NOTE If the engine hunts while idling after adjustment of the basic idle speed disconnect the cable from the battery for 10 seconds or more and then reconnect it and run the engine at idle for about 10 minutes D Z ooN IDLE POSITION SWITCH AND THROTTLE POSITION SENSOR ADJUSTMENT Vehicles without TCL gt 13100130275 1 Connect the MUT II to the diagnosis connector MPI lt 6A1 gt On vehicle Service 13A 185 lt Vehicles without auto cruise control system gt Throttle lever San 4 Fixed SAS Wi I al Thickness ig gauge A lt Vehicles with auto cruise control system gt Throttle lever Thickness 10 11 Insert a thickness gauge as follows lt Vehicles without auto cruise control system gt Insert a thickness gauge with a thickness of 0 65 mm between the fixed SAS and the throttle lever lt Vehicles with auto cruise control system gt Insert a 1 4 mm thick thickness gauge up to approx 3 mm between the levers shown in the figure NOTE Do not insert the thickness gauge 3 mm or more If doing that the throttle lever opening angle becomes larger than the predetermined angle causing maladjustment Turn the ignition switch to ON but do not start the engine Loosen the throttle position s
62. to the engine ECU Based on this voltage signal the engine ECU controls the idle up speed for high or low load OK Measure at the engine ECU connector C 34 Check the following connector e Connect the connector C 34 e Voltage between 24 and earth Engine at idle outside air OK NG temperature 25 C or more OK 0 3 V When A C is MAX COOL condition when Repair the load by A C is high System voltage When A C is MAX HOT condition y when the load by A C is low Check trouble symptom Na NG Y Check the A C system Refer to GROUP 55 On vehicle Service Replace the engine ECU MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 25 Fans radiator fan A C condenser fan are inoperative 13A 45 Probable cause The engine ECU outputs a duty signal to the fan controller depending on the engine coolant temperature vehicle speed and air conditioner switch condition Based on this signal the fan controller controls the radiator fan and condenser fan speeds The more the average voltage at the terminal approaches 5 V the higher the fan speed become Malfunction of the fan motor relay Malfunction of the fan motor Malfunction of the fan controller Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU NG NG Measure at the engine ECU connector C 34 e Disconnect the connector
63. y NG Check the following connectors Repair D 03 C 50 C 11 OK y Check trouble symptom NG Y NG Inspect the harness between the com Repair bination meter and the TCL ECU OK Y NG Check if a TCL indicator lamp bulb is Replace the lamp bulb burnt out OK Y Replace the TCL ECU Inspection Procedure 4 One of the TCL indicator lamps does not illuminate when the ignition switch is ON Check trouble symptom pne Check the harness between the com bination meter and the junction block and repair if necessary Probable cause Because the TCL indicators utilise shared power supply circuits if one of the indicator lamps is illuminated the power supply circuit can be judged to be normal e Open circuit in indicator lamp power supply circuit e Burnt out indicator lamp bulb Is the bulb of the non illuminated indica tor lamp normal No Yes Measure at the TCL ECU connector C 11 e Disconnect the connector measure at the harness side e Voltage between terminal 45 and body earth e Voltage between terminal 46 and body earth OK System voltage and Replace the lamp bulb OK e Replace the TCL ECU Ne OK Check the following connectors D 03 C 50 C 11 c NG Check trouble symptom Check the harness between t
64. york NG MUT II Data list 11 Oxygen sensor front OK Changes between 600 1 000 mV during sudden racing JoK NG MUT II Data list 11 Oxygen sensor front OK Changes between 0 400 mV and 600 1 000 mV during idling OK Y NG MUT II Actuator test 15 Vacuum control solenoid valve lt Vehicles with TCL gt Refer to P 13A 167 JoK MUT II Actuator test 16 Ventilation control solenoid valve lt Vehicles with TCL gt Refer to P 13A 167 NG Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 18A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Check the intake air sensor system Refer to P 13A 113 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 119 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNOS TIC CODE 21 Check the throttle position sensor system Refer to P 13A 114 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 14 Check the EGR control solenoid valve system Refer to P 18A 152 INSPECTION PROCEDURE 37 Check the oxygen sensor rear system Refer to P 13A 122 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to
65. 1 5 2 5V Air flow sensor Engine Idle speed 2 2 3 2V Engine r min 2 500r min Inhibitor switch lt A T gt Ignition switch Set selector lever ON to Por N Set selector lever to Other than P or N CHECK CHART FOR RESISTANCE AND CONTINUITY BETWEEN TERMINALS 1 2 3 Turn the ignition switch to OFF Disconnect the engine ECU connector Measure the resistance and check for continuity between the terminals of the engine ECU harness side connector while referring to the check chart NOTE 1 When measuring resistance and checking continuity a harness for checking contact pin pressure should be used instead of inserting a test probe 2 Checking need not be carried out in the order given in the chart Caution If the terminals that should be checked are mistaken or if connector terminals are not correctly shorted to earth damage may be caused to the vehicle wiring sensors engine ECU and or ohmmeter Be careful to prevent this If the ohmmeter shows any deviation from the standard value check the corresponding sensor actuator and related electrical wiring and then repair or replace After repair or replacement recheck with the ohmmeter to confirm that the repair or replacement has corrected the problem MPI lt 4G6 gt Troubleshooting 13A 71 Engine ECU Harness Side Connector Terminal Arrangement Terminal No 9FU0392 Inspection item Normal conditio
66. 1 and earth OK Continuity Check trouble symptom OK t NG NG i ine iti Check the following Repair pili ob i wire between engine ECU and throttle position connector B 07 JoK yon Ne Replace th ine ECU i Check trouble symptom eplace the engine ECU Repair NG Y Replace the engine ECU MPI lt 6A1 gt Troubleshooting 13A 147 INSPECTION PROCEDURE 29 Idle position switch system lt Vehicles with TCL gt Probable cause The idle position switch inputs the condition of the accelerator pedal i e whether Maladjustment of the accelerator pedal it is depressed or released HIGH LOW to the engine ECU Maladjustment of the fixed SAS The engine ECU controls the idle speed control servo based on this input Maladjustment of the idle position switch and accelerator pedal position sensor Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU NG Check the idle position switch Refer to P 13A 195 Replace the accelerator pedal position sensor JK NG NG i Measure at the accelerator pedal position sensor connector B 41 Check the following Repair e Disconnect the connector and measure at the harness side connector C 39 e Voltage between 3 and earth Ignition switch ON OK OK 4 V or higher e Continuity between 4 and earth OK Continuity Check trouble symptom
67. 13H 8 27 TCL ECU power supply voltage circuit engine control relay circuit system 13H 9 31 Front right wheel speed sensor circuit system 13H 10 32 Front left wheel speed sensor circuit system 13H 10 33 Rear right wheel speed sensor circuit system 13H 10 34 Rear left wheel speed sensor circuit system 13H 10 35 Rear wheel speed sensor circuit system 1 13H 11 36 Rear wheel speed sensor circuit system 2 13H 11 41 Steering wheel sensor ST 1 circuit system open circuit 13H 12 42 Steering wheel sensor ST 2 circuit system open circuit 13H 12 43 Steering wheel sensor ST N circuit system open circuit 13H 12 44 Steering wheel sensor circuit system short circuit 13H 13 45 Steering wheel sensor ST N circuit system short circuit 13H 13 71 Engine ECU communication circuit system 13H 14 72 Engine ECU circuit system GROUP 13A Troubleshooting A T ECU communication circuit system 13H 14 ABS circuit system 13H 15 TCL Troubleshooting INSPECTION PROCEDURES FOR DIAGNOSIS CODES Code No 11 APS circuit system Probable cause 13H 5 This diagnosis code is output if the APS output voltage is less than 0 2 V due to an open circuit or other malfunction in the APS circuit The APS power supply and earth are supplied from the engine ECU and the output signal is
68. 20 C between terminal 3 and terminal 4 on the oxygen sensor connector If there is no continuity replace the oxygen sensor NOTE 1 If the MUT II does not display the standard value although no abnormality is found by the above mentioned continuity test and harness check replace the oxygen sensor rear 2 For removal and installation of the oxygen sensor refer to GROUP 15 Exhaust Pipe and Main Muffler 13100520294 Measurement of Resistance between Terminals Front bank side No 2 No 4 No 6 cylinders Remove the injector connector Measure the resistance between terminals Standard value 13 16 Q at 20 C Rear bank side No 1 No 3 No 5 cylinders Disconnect the injector intermediate harness connectors Measure the resistance between terminals Standard value 13 16 Q at 20 C Injector Measurement probe No 1 cylinder 1 2 No 3 cylinder 1 3 No 5 cylinder 1 4 13A 198 MPI lt 6A1 gt On vehicle Service Checking the Injection Condition 1 Following the steps below bleed out the residual pressure within the fuel pipe line to prevent flow of the fuel Refer to P 13 191 2 Remove the injector 3 Arrange the special tool injector test set adaptor fuel pressure regulator and clips as shown in the illustration below High pressure fuel hose MD998741 Return hose Pressure regulator MD116395 MD998706 Clip MB991608 7FU0145 Battery 4 Apply batte
69. C LED harness Commercial tester connection D MB991222 adapter D Probe 991223 MB991502 MUT II sub Reading diagnosis code assembly MPI system inspection MB991348 Test harness set Measurement of voltage during trouble shooting Inspection using an analyzer MB991709 Test harness MB991519 Alternator harness Measurement of voltage during connector troubleshooting MD998463 Test harness Inspection of idle speed control servo 6 pin square Inspection using an analyzer MD998478 Test harness Measurement of voltage during trouble 3 pin triangle shooting Inspection using an analyzer 13A 108 MPI lt 6A1 gt Special Tools Troubleshooting Number Name Use MD998709 Adaptor hose Measurement of fuel pressure MD998742 Hose adaptor MD998706 Injector test set Checking the spray condition of injectors MB991607 Injector test harness MB991607 MD998741 Injector test adaptor MD998741 MB991608 TROUBLESHOOTING 13100850256 DIAGNOSIS TROUBLESHOOTING FLOW Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points DIAGNOSIS FUNCTION 13100860365 LSS ENGINE WARNING LAMP CHECK ENGINE LAMP If an abnormality occurs in any of the following items related Ze to the Multipoint Fuel Injection MPI system the engine j warning lamp will illuminate TI D If the lamp remains illuminated or if the lamp illuminates while E the engine is run
70. CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No M NG Check the ISC servo for operation sound Refer to P 13A 95 Check the ISC servo system OK Refer to P 13A 50 INSPECTION PROCEDURE 34 Y NG MUT II Data list __ Check the idle position switch system 26 Idle position switch Refer to P 13A 63 Refer to P 13A 46 INSPECTION PROCEDURE 28 OK M NG MUT II Data list e Check the engine coolant temperature sensor system 21 Engine coolant temperature sensor Refer to P 13A 62 Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 OK Y NG MUT II Data list Check the A C switch and A C relay system 28 A C switch Refer to P 13A 63 Refer to P 13A 49 INSPECTION PROCEDURE 32 OK Y Basic idle adjustment Refer to P 13A 83 Y NG Check trouble symptom __ Clean the throttle valve area Refer to P 13A 81 i Check and adjust the fixed SAS Refer to P 13A 83 13A 36 INSPECTION PROCEDURE 10 Idling speed is low Improper idling speed MPI lt 4G6 gt Troubleshooting Probable cause In cases such as the above the cause is probably that the intake air volume during e Malfunction of the ISC servo system idling is too small Yes MUT II Self Diag code gt Are diagnosis codes displayed No 1 NG Check the ISC servo for operation sound Refer to P 13A 95 OK Y NG MUT II
71. Check the following Repair e Disconnect the connector and measure at the harness side connectors C 92 C 131 1 Voltage between 82 and earth Ignition switch ON OK OK System voltage 2 3 NG 2 Voltage between 38 and earth Check trouble symptom OK System voltage 3 Voltage between 12 25 and earth Ignition switch ON 4 NG eo OK System voltage when the terminal 38 is earthed NG i 4 Continuity between 13 26 and earth Check the harness wire Repair OK Continuity SNE between engine ECU and 5 Voltage between 80 and earth ignition switch connector OK System voltage 0K OK Check the ignition switch NG Refer to GROUP 54 Ignition Switch and Immobilizer System Check the following Repair connectors C 34 C 36 C 40 L Check the harness wire between engine ECU and control relay OK connector and repair if necessary AA Check trouble symptom L Check the harness wire between engine ECU and earth and repair pa if necessary Replace the engine ECU NG Check the following connectors C 47 C 83 C 66 C 63 C 132 C 141 lt L H gt C 62 C 14 lt R H gt m Repair OK Y Check trouble symptom NG Y Check the harness wire between engine ECU and battery and repair if necessary Check fuel pump circuit NG NG Measure at the fuel pump connector E 16 m Check the following
72. Connect the MUT II to the diagnosis connector Move the selector lever to P range lt A T gt or move the shift lever to the neutral position lt M T gt Start the engine Turn the TCL switch to ON Operate the MUT II to start the actuator test item No 05 and fully depress the accelerator pedal at the same time Check that the engine speed is kept down to 3 000 r min at this time Caution The actuator test should only be carried out for 3 seconds Because the engine speed will increase once the actuator test is stopped the accelerator pedal should be released quickly after it has been depressed NOTE The TCL ECU will output a request torque 0 signal to the engine ECU for 3 seconds while the actuator test is being carried out and the TCL OFF indicator will illuminate during this time 13H 26 TCL On vehicle Service O3N0058 lt When not using the MUT II gt 1 Turn the TCL switch to ON 2 Place the front wheels onto a speedometer tester or a chassis dynamo and start the engine The front wheels may also be jacked up Move the shift lever to 1st position lt M T gt or the selector lever to D range lt A T gt Check to be sure that the engine speed is restrained when the accelerator pedal is depressed NOTE If the following symptoms occur when the accelerator pedal is depressed refer to Troubleshooting 1 If the TCL indicator lamp does not illuminate 2 If th
73. ECU Replace the injection pump Check the harness wire between the control relay and the timing control solenoid valve connector and repair if necessary Check the following connector B 56 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the timing control solenoid valve connector and repair if necessary Replace the injection pump 13E 20 Code No 44 Solenoid type spill valve system DIESEL FUEL Troubleshooting Probable cause Range of Check e Ignition switch ST OFF e Injection pump speed 750 r min or more e Solenoid type spill valve relay ON Set Conditions e Solenoid type spill valve does not turn off Malfunction of the solenoid type spill valve Open or short circuit in solenoid type spill valve circuit or poor connector contact Malfunction of the injection pump Malfunction of the engine ECU Range of Check Set Conditions e Injection pump speed is 5 400 r min or more for a continuous period of 2 seconds or more Replace the injection pump NG Check the solenoid type spill valve Refer to P 13E 59 gt JoK NG Measure at the solenoid type spill valve connector B 61 gt e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON OK System volta
74. ECU open circuit or Replace JoK Measure at the purge control solenoid valve connector B 04 e Disconnect the connector and measure at the harness side e Voltage between 2 and earth Ignition switch ON OK System voltage NG e JOK NG Measure at the engine ECU connector C 34 e Disconnect the connector and measure at the harness side e Voltage between 9 and earth Ignition switch ON OK System voltage OK Y NG Check the following Repair connector C 34 OK y Check trouble symptom NG Y Replace the engine ECU INSPECTION PROCEDURE 36 EGR control solenoid valve system Check the harness wire between control relay and solenoid valve connector and repair if necessary NG Check the following Repair connector B 04 OK Check trouble symptom NG Y Check the harness wire between engine ECU and solenoid valve connector and repair if necessary Probable cause The EGR control solenoid valve is controlled by the negative pressure resulting from EGR operation leaking to port A of the throttle body NG Check the EGR control solenoid valve Refer to GROUP 17 Emission Control System JoK NG Measure at the EGR control solenoid valve connector B 06 e Disconnect the connector and measure at the harness side e Voltage between 1 and earth
75. If voltmeter shows any division from standard value check the corresponding sensor actuator and related electrical wiring then repair or replace After repair or replacement recheck with the voltmeter to confirm that the repair has corrected the problem 13E 44 DIESEL FUEL Troubleshooting Engine ECU Connector Terminal Arrangement Terminal No Check item 9FUOIOI Check condition Engine condition Normal condition 2 Timing control solenoid valve Ignition switch ON 11 13V Engine Idling 3 5 7 5 V Engine 2 500 r min 5 9V Solenoid type spill valve Ignition switch ON 11 13V When engine is suddenly decelerated from 3000 r min 0 lt gt 12 5 V varies repeatedly and momentarily increases Throttle solenoid valve Ignition switch ON 0 3V Engine Idling Engine coolant tempera ture is 40 C or lower 12 15V Engine coolant tempera ture is 80 C or higher 0 3V Crank angle sensor Engine Cranking 0 4 40V Engine Idling 2 5 45V Between terminals 10 and 23 Pump operation sensor Engine Idling 0 2 1 0V AC range Engine 2 500 r min 1 2 2 2 V AC range EGR solenoid valve Ignition switch OFF gt ON 11 13V When idling after having warmed up engine is suddenly raced Momentarily
76. Ignition switch OFF gt ON 0 3V after several seconds 9 13V Control relay Ignition switch OFF 11 13V Ignition switch ON 0 3V Glow plug relay pre heat time control e Ignition switch OFF ON e Engine coolant temperature is 40 C or less Pre glow function check 9 12 V after approx 8 seconds gt 0 0 5 V at engine coolant temperature of 20 C Backup power supply Ignition switch OFF 11 13V A C variable capacity relay e Engine Idling e A C switch ON Engine coolant tempera ture is 5 C or less 0 3V Engine coolant tempera ture is 5 C or more 13 15V Solenoid type spill valve Ignition switch ON OFF 0 39 V after approx 3 seconds OV Power supply Ignition switch ON 11 13V DIESEL FUEL Troubleshooting 13E 47 CHECK CHART FOR RESISTANCE AND CONTINUITY BETWEEN TERMINALS 1 2 3 5 Turn the ignition switch to OFF Disconnect the engine ECU connector Measure the resistance and check for continuity between the terminals of the engine ECU harness side connector while referring to the check chart NOTE 1 When measuring resistance and checking continuity a harness for checking contact pin pressure should be used instead of inserting a test probe 2 Checking need not be carried out in the order given in the chart Caution If the terminals that should be checked are mi
77. MPI lt 6A1 gt Troubleshooting NG MUT II Data list 26 Idle position switch Refer to P 13A 164 OK MUT II Data list 13 Intake air temperature sensor Refer to P 13A 163 NG OK Y NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 164 OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Actuator test 08 Purge control solenoid valve Refer to P 13A 167 OK Y NG MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 167 OK Y MUT II Data list 59 Oxygen sensor rear Refer to P 13A 166 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV NG york NG MUT II Data list 11 Oxygen sensor front OK 600 1 000 mV during sudden racing JoK MUT II Data list 11 Oxygen sensor front OK Changes between 0 400 mV and 600 1 000 mV during idling NG OK Y NG MUT II Data list 27 Power steering fluid pressure switch Refer to P 13A 164 OK Y NG MUT II Data list 28 A C switch Refer to P 13A 164 OK Y NG MUT II Data list 29 Inhibitor switch Refer to P 13A 164 OK Y NG MUT II Data list 45 ISC Servo position Refer to P 13A 166 Check the idle position switch s
78. OK 0 4 40 V e Voltage between 2 and earth Engine idling OK 25 45 V OK NG Measure at the crank angle sensor connector B 77 e Disconnect the connector and measure at the harness side connector 1 Voltage between 3 and earth Ignition switch ON OK System voltage 2 Voltage between 2 and earth Ignition switch ON OK 48 52V 3 Continuity between 1 and earth OK Continuity 2 NG 3 NG Malfunction of the crank angle sensor Open or short circuit in crank angle sensor circuit or poor connector contact Malfunction of the engine ECU Replace the engine ECU Check the harness wire between the crank angle sensor and the control relay connector and repair if necessary OK AA Check the following connector B 77 OK pne Repair Y Check trouble symptom NG AA Replace the crank angle sensor Check the following connector C 53 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the crank angle sensor connector OK NG Repair Y Replace the engine ECU Check the harness wire between the crank angle sensor and the earth and repair if necessary 13E 16 Code No 22 Ignition switch ST signal system DIESEL FUEL Troubleshooting Probable cause Range of Check e Ignition switch ON e Injection pump speed 1 200 r min or
79. OK System voltage NG Check the fuel pump operation Refer to P 13A 191 J me OK Y NG Check the fuel pump relay Refer to P 13A 193 Replace OK Y NG a Check the fuel pump drive control circuit Refer to P 13A 159 INSPECTION PROCEDURE 48 JoK Check the harness wire between fuel pump relay connector and fuel pump drive terminal and repair if necessary INSPECTION PROCEDURE 28 Idle position switch system lt Vehicles without TCL gt Probable cause The idle position switch inputs the condition of the accelerator pedal i e whether it is depressed or released HIGH LOW to the engine ECU The engine ECU controls the idle speed control servo based on this input Maladjustment of the accelerator pedal Maladjustment of the fixed SAS Maladjustment of the idle position switch and throttle position sensor Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or NG Check the idle position switch Refer to P 13A 195 m Replace the throttle position sensor JK NG NG Measure at the throttle position sensor connector B 07 Check the following Repair e Disconnect the connector and measure at the harness side connector C 39 e Voltage between 2 and earth Ignition switch ON OK OK 4 V or higher 1 e Continuity between
80. On vehicle Service 6 Start the engine and check that there are no fuel leakage FUEL FILTER ASSEMBLY REPLACEMENT lt PETROL POWERED VEHICLES gt 43500130130 1 Bleed the residual pressure from inside the fuel line Refer to GROUP 13A On vehicle Service 2 Remove the parking brake cable clamp 3 Disconnect the high pressure fuel hose Caution As there will be some pressure remaining in the fuel pipe line cover it with a rag to prevent fuel from spraying out FUEL SUPPLY Fuel Filter 13F 7 4 Hold the fuel filter with a spanner and loosen the flare nut Then disconnect the main pipe connection 5 Remove the fuel filter 6 After installing the new fuel filter tighten the main pipe flare nut to the specified torque 7 Connect the high pressure fuel hose Caution After connecting the high pressure fuel hose pull it gently in the direction of removal to check that the hose is firmly connected 8 After installation check that there are no fuel leaks 1 Apply battery voltage to the fuel pump drive terminal to operate the fuel pump Refer to GROUP 13A On vehicle Service 2 Check for leaks when fuel pressure is applied NOTES 13H 1 TRACTION CONTROL SYSTEM TCL CONTENTS 13609000039 GENERAL INFORMATION 2 Wheel Speed Sensor Check 005 27 Vacuum Solenoid Valve Check 27 SERVICE SPECIFICATION te susteeaanigietake Ventilation Solenoid Valve Check
81. P 13A 112 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure 1 Refer to P 13A 189 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate e Broken air intake hose 2 Check the injector for clog Check the vacuum control solenoid valve system Refer to P 13A 124 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 71 Check the ventilation control solenoid valve system Refer to P 13A 125 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 72 MPI lt 6A1 gt Troubleshooting 13A 157 INSPECTION PROCEDURE 45 MUT II Check if surge occurs NG MUT II Data list Check the idle position switch system 26 Idle position switch Refer to P 13A 164 Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles OK without TCL gt Refer to P 18A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Y NG MUT II Data list __ Check the intake air sensor system Refer to P 13A 113 INSPEC 13 Intake air temperature sensor Refer to P 13A 163 TION PROCEDURE FOR DIAGNOSIS CODE 13 OK Y NG MUT II Data list L e Check the barometric pressure sensor system Refer to P 13A 119 25 Barometr
82. Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Check the following items e Check the ignition coil spark plugs spark plug cables e Check for occurrence of ignition leak MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 17 The feeling of impact or vibration when decelerating 13A 141 Probable cause Malfunction of the ISC system is suspected e Malfunction of the ISC system Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the ISC servo for operation sound Refer to P 13A 199 ___ OK Y NG MUT II Data list e 14 Throttle position sensor Refer to P 13A 163 OK Y NG MUT II Data list e 26 Idle position switch Refer to P 13A 164 OK Y Clean the throttle valve area Refer to P 13A 184 INSPECTION PROCEDURE 18 Poor acceleration Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the ISC servo system Refer to P 13A 151 INSPECTION PROCEDURE 35 Check the throttle position sensor system Refer to P 13A 114 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 14 Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Probable cause Defective ignition
83. SAS by the manufacturer and there should usually be no need for readjustment 2 If the adjustment has been changed by mistake the idle speed may become too high or the idle speed may drop too low when loads from components such as the A C are placed on the engine If this occurs adjust by the following procedure 3 The adjustment if made should be made after first confirming that the spark plugs the injectors the idle speed control servo the compression pressure etc are all normal 1 Before inspection and adjustment set the vehicle to the pre inspection condition 2 Connect the MUT II to the diagnosis connector 16 pin NOTE When the MUT II is connected the diagnosis control terminal should be earthed 3 Start the engine and run at idle 4 Select the item No 30 of the MUT II Actuator test NOTE This holds the ISC servo at the basic step to adjust the basic idle speed 5 Check the idle speed Standard value 650 50 r min NOTE 1 The engine speed may be 20 to 100 r min lower than indicated above for a new vehicle driven approximately 500 km or less but no adjustment is necessary 2 If the engine stalls or the engine speed is low even though the vehicle has been driven approximately 500 km or more it is probable that deposits are adhered to the throttle valve so clean it Refer to P 13A 184 6 If not within the standard value range turn the speed adjusting screw SAS to make the necessa
84. SIS CODE 21 Check the EGR control solenoid valve system Refer to P 13A 152 INSPECTION PROCEDURE 37 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables e Check the compression pressure e Check the engine oil viscosity 13A 138 INSPECTION PROCEDURE 12 When the engine is hot it stalls at idling Die out MPI lt 6A1 gt Troubleshooting Probable cause In such cases as the above the cause is probably that ignition system air fuel mixture idle speed control ISC or compression pressure is defective In addition if the engine suddenly stalls the cause may also be a defective connector contact Yes Were the battery terminals disconnected No Y Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the ISC servo for operation sound Refer to P 13A 199 ___ OK M NG Check the injector for operation sound gt OK Y Yes Does the engine stall right after the accelerator pedal is released __ No Y No Does the engine stall easily again gt Yes Y MUT II Engine stalling inspection when the engine is warm and idling Refer to P 13A 155 INSPECTION PROCEDURE 43 OK Y NG Check the ignition timing gt e Refer to GROUP 11B On vehi
85. TCL OFF indicator lamp does not illuminate even if the TCL switch is continuously pressed to the OFF side while the engine is idling Malfunction of TCL illuminates in the TCL operation range but torque is TCL operation not reduced Poor starting Engine output is reduced in the TCL non operation range Poor acceleration TCL indicator lamp does not illuminate and starting and acceleration performance is poor 13H 16 TCL Troubleshooting INSPECTION PROCEDURES FOR EACH TROUBLE SYMPTOM Inspection Procedure 1 Communication with the MUT II is not possible Communication with all systems is not possible Probable cause The cause is probably a defective power supply system including earth for the diagnosis line e Malfunction of connector e Malfunction of harness Measure at the diagnosis connector C 20 Voltage between terminal 16 and body earth OK System voltage OK Measure at the diagnosis connector C 20 Continuity between terminal 4 5 and body earth OK Continuity OK Check trouble symptom NG NG NG Check the following connectors C 141 C 132 C 63 C 66 C 20 lt L H drive vehicles gt C 14 C 62 C 66 C 20 lt R H drive vehicles gt NG JoK Repair Check trouble symptom NG Check the following connector C 20 NG JOK NG Check trouble symptom
86. Troubleshooting 13A 129 INSPECTION PROCEDURE 2 MUT II communication with engine ECU is impossible Probable cause One of the following causes may be suspected Malfunction of engine ECU power supply circuit e No power supply to engine ECU Malfunction of engine ECU e Defective earth circuit of engine ECU Malfunction of immobilizer ECU e Defective engine ECU Open circuit between immobilizer ECU and diagnosis e Improper communication line between engine ECU and MUT II connector Open circuit between engine ECU and immobilizer ECU No Is communication possible between the MUT II and the immobilizer Check the diagnosis line between the immobilizer ECU and the ECU MUT II and repair if necessary Refer to GROUP 54 Ignition Yes Key and Immobilizer M NG Check the following connectors C 37 C 81 C 68 Repair OK Y Check trouble symptom NG Y NG Check the harness wire between engine ECU and diagnosis con Repair nector OK Y OK NG Check the harness wire between engine ECU and immobilizer l Check the harness wire Repair ECU between engine ECU and NG earth ij JoK Repair Check the power supply and ignition switch IG system Refer to P 13A 145 INSPECTION PROCEDURE 26 13A 130 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 3 The engine warning lamp does not illuminate right after
87. Valve Check 60 Position Switch T AGIUSHMEN tsb aian bares Throttle Actuator Check 2 005 61 Idle Position Switch 2 Adjustment 54 Injection Nozzle Check and Adjustment 61 Component Location 00e sees 55 Control Relay and Solenoid type Spill Valve Relay INJECTION PUMP AND NOZZLE 63 Continuity Check 00 cee eee eee 56 Intake Air Temperature Sensor Check 56 THROTTLE BODY sees eeeeees 68 13E 2 DIESEL FUEL General Information GENERAL INFORMATION 13300010063 The electronically controlled fuel injection system consists of sensors which detect the condition of the diesel engine an engine ECU which controls the system based on signals from these sensors and actuators which operate according to control commands from the engine ECU The engine ECU carries out operations such as fuel injection rate control fuel injection timing control and idle up control In addition the engine ECU is equipped with several self diagnosis functions which make troubleshooting easier in the event that a problem develops FUEL INJECTION RATE CONTROL The fuel injection completion timing is controlled by means of a solenoid type spill valve to ensure that the optimum amount of fuel is supplied to the engine in accordance with gradual changes in the engine running condition Before fuel injection starts the solenoid type spill valve is on energized so that
88. after having warmed up suddenly depress the accelerator pedal From 11 14 V momentarily drops slightly Stepper motor coil lt A1 gt Stepper motor coil lt A2 gt Stepper motor coil lt B1 gt Stepper motor coil lt B2 gt Engine Soon after the warmed up engine is started System voltage lt gt 0 V Changes repeatedly EGR control solenoid valve Ignition switch ON System Voltage While engine is idling suddenly depress the accelerator pedal From system voltage momentarily drops A C relay e Engine Idle speed e A C switch OFF ON A C compressor is operating System voltage or momentarily 6V or more 0 3V Power transistor unit Engine r min 3 000 r min 0 3 3 0V Power supply Ignition switch ON System voltage Air flow sensor reset signal Engine Idle speed 0 1V Engine r min 3 000 r min 6 OV Fan controller When the radiator fan and condenser fan are not operating 0 03V When the radiator fan and condenser fan are operating 0 7 V or more Fuel pump relay Ignition switch ON System voltage Engine Idle speed 0 3V 13A 170 Terminal No MPI lt 6A1 gt Troubleshooting Check item Check condition Engine condition Normal condition 24 Purge control solenoid valve Ignition switch ON System voltage Running at 3 000 r min while engine is warming up
89. after having been started 0 3V Ventilation control solenoid valve lt Vehicles with TCL gt Ignition switch ON System voltage Vacuum control solenoid valve lt Vehicles with TCL gt Ignition switch ON System voltage Engine warning lamp Ignition switch OFF gt ON 0 3V 9 13V After several seconds have elapsed Power steering fluid pressure switch Engine Idling after warming up When steering wheel is stationary System voltage When steering wheel is turned 0 3V Control relay Power supply Ignition switch OFF System voltage Ignition switch ON 0 3V A C switch 1 Turn the A C switch OFF Engine Idle speed 0 3V Turn the A C switch ON A C compressor is operating System voltage Alternator G terminal Engine Warm OFF Headlamp OFF to ON Rear defogger switch OFF to ON Brake lamp ON idle radiator fan Voltage rises by 0 2 3 5 V Alternator FR terminal Engine Warm idle radiator fan OFF Headlamp OFF to ON Rear defogger switch OFF to ON Brake lamp ON Voltage drops by 0 2 3 5 V A C switch 2 When A C is MAX COOL condition when the load by A C is high Engine Idling Outside air temperature 25 C or more HOT condition When the load by A C is low When A C is MAX System voltage Ignition switch ST Engine Cranking 8V or more
90. applying voltage Normal condition Battery voltage Normal condition Applied Vacuum maintained Not applied Vacuum leaks 5 Measure the resistance between the terminals of the solenoid valve Standard value 36 44 Q at 20 C VACUUM CONTROL SOLENOID VALVE CHECK lt Vehicles with TCL gt 13100620048 NOTE When disconnecting the vacuum hose always make a mark so that it can be reconnected at original position 1 Disconnect the vacuum hose blue stripe green stripe from the solenoid valve 2 Disconnect the harness connector 13A 202 Ci Throttle lever A Battery MPI 7FU0897 ic i Sar mi A Throttle valve 7 6AFO275 7FU0898 6IN0035 oe WY lt 6A1 gt On vehicle Service Connect a hand vacuum pump to the nipple to which the blue striped vacuum hose was connected Check air tightness by applying a vacuum with voltage applied directly from the battery to the solenoid valve and without applying voltage Battery voltage Normal condition Applied Vacuum leaks Not applied Vacuum maintained Measure the resistance between the terminals of the solenoid valve Standard value 36 44 Q at 20 C VACUUM TANK CHECK 13100810049 lt Vehicles with TCL gt Connect a hand vacuum pump to vacuum tank A nipple apply 67 kPa of vacuum and check that the vacuum is held 2 Connect a hand vacuum pump to vacuum tank B nipple 3 First close A ni
91. are not correctly shorted to earth damage may be caused to the vehicle wiring sensors engine ECU and or ohmmeter Be careful to prevent this 4 lf the ohmmeter shows any deviation from the standard value check the corresponding sensor actuator and related electrical wiring and then repair or replace 5 After repair or replacement recheck with the ohmmeter to confirm that the repair or replacement has corrected the problem Engine ECU Harness Side Connector Terminal Arrangement 9FU0392 Terminal No Inspection item Normal condition Check condition 1 12 No 1 injector 13 16 Q At 20 C 14 12 No 2 injector 2 12 No 3 injector 15 12 No 4 injector 3 12 No 5 injector 16 12 No 6 injector 13A 174 Terminal No MPI lt 6A1 gt Troubleshooting Inspection item Normal condition Check condition 4 12 Stepper motor coil A1 17 12 Stepper motor coil A2 5 12 Stepper motor coil B1 18 12 Stepper motor coil B2 28 33 Q At 20 C 6 12 EGR control solenoid valve 36 44 Q At 20 C 24 12 Purge control solenoid valve 36 44 Q At 20 C 13 Body earth Engine ECU earth 26 Body earth Engine ECU earth Continuity 0 Q 31 12 Ventilation control solenoid valve lt Vehicles with TCL gt 36 44 Q At 20 C 32 12 Vacuum control solenoid valve lt Vehicles wi
92. chart Caution Short circuiting the positive probe between a connector terminal and earth could damage the vehicle wiring the sensor engine ECU or all of them Be careful to prevent this If voltmeter shows any division from standard value check the corresponding sensor actuator and related electrical wiring then repair or replace After repair or replacement recheck with the voltmeter to confirm that the repair has corrected the problem MPI lt 4G6 gt Troubleshooting Engine ECU Connector Terminal Arrangement Terminal No Check item 9FU0393 Check condition Engine condition 13A 67 Normal condition No 1 injector No 2 injector No 3 injector No 4 injector While engine is idling after having warmed up suddenly depress the accelerator pedal From 11 14 V momentarily drops slightly Stepper motor coil lt A1 gt Stepper motor coil lt A2 gt Stepper motor coil lt B1 gt Stepper motor coil lt B2 gt Engine Soon after the warmed up engine is started System voltage lt gt 0 V Changes repeatedly EGR control solenoid valve Ignition switch ON System Voltage While engine is idling suddenly depress the accelerator pedal From system voltage momentarily drops A C relay e Engine Idle speed e A C switch OFF ON A C compressor is
93. connector B 58 lt L H drive vehicles gt B 59 lt R H drive vehicles gt OK pne Repair Y Check trouble symptom NG Y Replace the engine ECU Malfunction of the engine ECU Replace the injection pump Check the following connector C 54 OK NG Repair Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the injection rate correction resistor connector OK ic Repair y Replace the engine ECU 13E 22 DIESEL FUEL Troubleshooting Code No 47 Immobilizer system Probable cause Range of Check Radio interference of ID codes e Ignition switch ON Incorrect ID code Set Conditions Malfunction of harness or connector e Communication problem between the engine ECU and the immobilizer ECU Malfunction of the immobilizer ECU NOTE Malfunction of the engine ECU If the engine is started while several ignition keys are present nearly signal mixing may occur which will cause this diagnosis code to be generated This code may also be generated when registering the key ID codes Yes Is there another ignition key near the ignition key that is inserted Remove the extra ignition key in the ignition switch No NG t Check trouble symptom Y Yes Is a diagnosis code output from the immobilizer ECU m Check the immobilizer
94. connector 7 ING Replace the distributor Replace the engine EGU L Check the harness wire between the top dead centre sensor and the earth and repair if necessary 13A 118 Code No 24 Vehicles speed sensor system MPI lt 6A1 gt Troubleshooting Probable cause Range of check Ignition switch ON Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts Idle position switch OFF Engine speed is 3 000 r min or more Driving under high engine load conditions Set conditions e Sensor output voltage does not change for 4 seconds no pulse signal input NG Check the vehicle speed sensor Refer to GROUP 54 Combina tion Meters Malfunction of the vehicle speed sensor Improper connector contact open circuit or short circuited harness wire of the vehicle speed sensor circuit Malfunction of the engine ECU m Replace JoK Measure at the vehicle speed sensor connector B 66 lt M T gt B 67 lt A T gt e Disconnect the connector and measure at the harness side 1 Voltage between 1 and earth Ignition switch ON OK System voltage 2 Voltage between 3 and earth Ignition switch ON OK 48 52V 3 Continuity between 2 and earth OK Continuity y NG Check the following Repair connectors B 66 lt M T gt B 67 lt A T gt OK Y Check trouble symptom NG
95. connector m Repair e Disconnect the connector and measure at the harness side E 11 e Continuity between 2 and earth OK OK Continuity 1 OK Check trouble symptom NG Y NG Check the following connectors E 16 E 11 C 123 C 92 B 09 Check the harness wire between fuel pump and earth and repair if necessary OK Y Check trouble symptom gt Repair NG Y NG Check the harness wire between terminal for fuel pump drive and Repair fuel pump connector OK Y Replace the fuel pump MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 47 13A 59 Check the fuel pump drive control circuit NG Measure at the fuel pump relay connector C 32 gt e Disconnect the connector and measure at the harness side e Voltage between 3 4 and earth Ignition switch ON OK System voltage J0 NG Measure at the engine ECU connector C 34 e Disconnect the connector and measure at the harness side e Voltage between 22 and earth Ignition switch ON OK System voltage yoK Check the following connector C 34 OK NG Repair Y Check trouble symptom R NG y Replace the engine ECU INSPECTION PROCEDURE 48 NG e gt Repair Check the following connectors C 92 C 131 OK Y Check trouble symptom NG Y NG Check the harness wire gt Repair between fuel pump relay and ignition switch con nector
96. detected in boost sensor circuit for 1 second Malfunction of the boost sensor Open or short circuit in boost sensor circuit or poor connector contact Measure at the boost sensor connector B 50 e Connect the connector Use the test harness MB991348 Voltage between 1 and earth Ignition switch ON OK 2 0 2 6 V Altitude O m 1 7 2 3 V Altitude 1200 m NG OK Y Measure at the engine ECU connector C 54 e Connect the connector e Voltage between 37 and earth Ignition switch ON OK 2 0 2 6 V Altitude O m 1 7 2 3 V Altitude 1200 m NG OK Y Check the following connectors B 50 C 54 OK pne Repair y NG Check trouble symptom Malfunction of the engine ECU Measure at the boost sensor connector B 50 e Disconnect measure at connector Voltage between 3 and earth Ignition switch ON OK 4 8 52V Continuity between 2 and earth OK Continuity the connector and the harness side NG OK Check the following connector B 50 OK pne Repair Check trouble symptom NG Check the harness wire between the engine ECU and the boost sensor con nector and repair if necessary Replace the engine ECU Check the following connector C 54 OK NG Repair LA Check trouble symptom NG Y Check the harness wire between the engine EC
97. disassemble the nozzle clean it and re inspect or replace the nozzle NOZZLE FUEL TIGHT CHECK 13300190026 1 Gently raise the lever of the nozzle tester until the pressure inside the nozzle value displayed on pressure gauge becomes 12 750 13 730 kPa and after holding this pressure for approximately 10 seconds check to be sure that there are no fuel leaks from the nozzle If there are any leaks disassemble the nozzle clean it and re inspect or replace the nozzle DIESEL FUEL Injection Pump and Nozzle 13E 63 INJECTION PUMP AND NOZZLE 13300210036 REMOVAL AND INSTALLATION Pre removal and Post installation Operation e Glow Plug Removal and Installation e Timing Belt Removal and Installation Refer to GROUP 16 Refer to GROUP 11C 19 Nm 35 Nm A0310071 Fuel injection pump removal steps Fuel injection nozzle removal steps 1 Fuel return hose connection 1 Fuel return hose connection 2 Fuel return hose connection lt Ap PPDa 5 Fuel injection pipe 3 Fuel main hose connection lt Cp PCd 12 Nut 4 Control wiring harness connection lt C gt PCJ 13 Fuel return pipe lt qAp PPDa 5 Fuel injection pipe 14 Fuel return pipe gasket 6 Flange lt D pPB lt d 15 Fuel injection nozzle and holder lt B gt 7 Fuel injection pump sprocket assembly lt B gt 8 Fuel injection pump pA lt dq 16 Holder gasket 9 Key pA lt dq 17 Nozzle gasket 10 Injection pump stay 11 Injection pump bracket stay 13E 64 DIESEL FUEL
98. earth Engine Idling Outside air temperature 25 C or higher OK 0 3 V When A C is MAX COOL condition when the load by A C is high System voltage When A C is MAX HOT condition When the load by A C is low Na Check the A C system Refer to GROUP 55 On vehicle Service Check the following connector C 54 OK Ne Repair Y Check trouble symptom NG Y Replace the engine ECU INSPECTION PROCEDURE 20 Fans radiator fan and A C condenser fan are imoperative NG Measure at the engine ECU connector C 53 e Disconnect the connector and measure at the harness side connector e Voltage between 18 and earth Ignition switch ON OK 4 8 5 2 V Fan rotates at high speed e Short circuit between 18 and earth Ignition switch ON OK Fan stops e JoK Check the following connector C 53 OK NG Repair Y Check trouble symptoms NG Y Replace the engine ECU Check the harness wire between the engine ECU and the fan con troller connector OK NG Repair Check the radiator fan and the condenser fan circuit Refer to GROUP 14 Troubleshooting 13E 34 DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 21 Check the engine ECU power supply and earth circuit
99. gt Replace e Short circuit between 8 and earth connectors C 33 C 35 Ignition switch ON A C switch ON OK OK A C compressor clutch turns on y Check trouble symptom NG y Replace the engine ECU 13A 150 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 34 Ignition circuit system Probable cause The engine ECU interrupts the ignition coil primary current by turning the power transistor Malfunction of ignition switch inside the engine ECU ON and OFF Malfunction of power transistor Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU 1 N NG Measure at the distributor connector B 42 RONG a Check the following Repair e Disconnect the connector and measure at the harness side connectors C 92 C 131 1 Voltage between 1 and earth Ignition switch ON OK OK System voltage 2 NG y 2 Continuity between 4 and earth Check trouble symptom OK Continuity NG Check the harness wire _ Repair Check ignition coil and power transistor unit circuit Refer to between distributor and P 13A 161 INSPECTION PROCEDURE 52 ignition switch connector JoK Check the ignition switch Refer to GROUP 54 Ignition Switch and Immobilizer System L Check the harness wire between distributor connector and earth and repair if necessary MPI lt 6A1 gt Troublesh
100. is felt Listen near the fuel tank for the sound of fuel pump operation Sound of opera tion is heard Procedure No 27 Purge control solenoid valve Solenoid valve turns from OFF to ON Ignition switch ON Sound of opera tion can be heard when solenoid valve is driven Procedure No 35 EGR control solenoid valve Solenoid valve turns from OFF to ON Ignition switch ON Sound of opera tion can be heard when solenoid valve is driven Procedure No 36 Basic igni tion timing Set to ignition timing adjust ment mode Engine Idling Timing light is set 5 BTDC Fan con troller Drive the fan motor Ignition switch ON Radiator fan and condenser fan operate at high speed 13A 66 MPI lt 4G6 gt Troubleshooting 7FUI264 CHECK AT THE ENGINE ECU TERMINALS 13100920285 TERMINAL VOLTAGE CHECK CHART 1 2 Connect a needle nosed wire probe test harness MB991223 or paper clip to a voltmeter probe Insert the needle nosed wire probe into each of the engine ECU connector terminals from the wire side and measure the voltage while referring to the check chart NOTE 1 Make the voltage measurement with the engine ECU connectors connected 2 You may find it convenient to pull out the engine ECU to make it easier to reach the connector terminals 3 The checks can be carried out off the order given in the
101. isolated 2 When these diagnosis codes are output erase the diagnosis code memory after carrying out repairs and then carry out a road test at 20 km h or more and check to be sure that the diagnosis codes are not output again Yes e Carry out ABS troubleshooting Refer to GROUP 35B Trouble shooting OK Is a diagnosis code output from the ABS ECU MUT II Data list No 33 34 Wheel speed sensor Accelerate from a stationary position OK Vehicle speeds displayed on the speedometer and MUT II are identical e Replace the TCL ECU NG Y OK Check the following connectors A 04 C 10 e NG Y NG Repair Check trouble symptom Check the harness connectors between the ABS ECU and the TCL ECU and repair if necessary 13H 12 TCL Troubleshooting Code No 41 Steering wheel sensor ST 1 circuit system Probable cause open circuit Code No 42 Steering wheel sensor ST 2 circuit system open circuit Code No 43 Steering wheel sensor ST N circuit system open circuit These diagnosis codes are output if there is an open circuit in the output wire of Malfunction of harness or connector the steering wheel sensor circuit e Malfunction of steering wheel sensor e Malfunction of TCL ECU OK NG Measure at TCL ECU con
102. of the oxygen sensor rear 3 minutes have passed after engine was started Improper connector contact open circuit or Engine coolant temperature is approx 80 C or more short circuited harness wire Idle position switch OFF Malfunction of the engine ECU The throttle position sensor output voltage is 4 1 V or more Open loop control in operation t conditions The oxygen sensor rear output voltage is 0 1 V or less The difference in the maximum and minimum values for the oxygen sensor rear output voltage is 0 08 V or less The oxygen sensor rear output voltage is 0 5 V or more The above conditions continue for a continuous period of 5 seconds e e e e e e 20 seconds have passed after deceleration finished Se e e NG Check the oxygen sensor rear Refer to P 13A 197 __ Replace JOK 1 NG Measure at the oxygen sensor rear connector C 85 Check the harness wire between the e Disconnect the connector and measure at the oxygen sensor rear and the control harness side relay connector and repair ifnecessary 1 Voltage between 3 and earth Ignition switch ON OK S 2 NG NG System voltage Check the following connector Repair 2 Continuity between 2 and earth f base C 39 OK Continuity 3 Continuity between 4 and earth 3 NG OK OK Continuity M Check trouble symptom
103. operating System voltage or momentarily 6V or more 0 3V Purge control solenoid valve Ignition switch ON System voltage Running at 3 000r min while engine is warming up after having been started 0 3V Ignition coil No 1 No 4 power transistor Ignition coil No 2 No 3 power transistor Engine r min 3 000 r min 0 3 3 0V Power supply Ignition switch ON System voltage Air flow sensor reset signal Engine Idle speed 0 1V Engine r min 3 000 r min 6 9V Fan controller Radiator fan and condenser fan are not operating 0 03V Radiator fan and condenser fan are operating 0 7 V or more 13A 68 Terminal No MPI Check item lt 4G6 gt Troubleshooting Check condition Engine condition Normal condition 22 Fuel pump relay Ignition switch ON System voltage Engine Idle speed 0 3V A C switch 2 When A C is MAX COOL condition when the load by A C is high e Engine Idling e Outside air temperature 25 C or more 0 3V When A C is MAX HOT condition when the load by A C is low System voltage Alternator G terminal Engine Warm idle radiator fan OFF Headlamp OFF to ON Rear defogger switch OFF to ON Brake lamp ON Voltage rises by 0 2 3 5 V Alternator FR terminal Engine Warm idle radiator fan OFF Headlamp OFF to ON Rear defog
104. or if the foot is resting on the brake pedal with driving OK NG Measure the continuity at the stop lamp switch connector C 02 Check the following _ _ Repair e Disconnect the connector and measure at the switch side connectors e Between terminals 1 2 C 02 C 65 C 75 C 11 OK Continuity when the brake pedal is depressed OK No continuity when the brake pedal is released y NG Check trouble symptom NG Y NG i Inspect the harness be m Repair tween stop lamp switch and the TCL ECU joK Replace the TCL ECU Y OK Stop lamp switch installation check Refer to GROUP 35A On ve Replace the stop lamp switch hicle Service NG y Stop lamp switch adjustment Refer to GROUP 35A On vehicle Service 13H 8 TCL Troubleshooting Code No 24 TCL switch circuit system Probable cause This diagnosis code is output if signals are input simultaneously from both the TCL OFF e Malfunction of the TCL switch and TCL ON positions because of a short circuit in the TCL switch circuit e Malfunction of harness or connector e Malfunction of TCL ECU NG Measure the continuity at TCL switch connector C 98 Replace the TCL switch e Disconnect the connector and measure at the switch side e Between terminals 2 3 and 3 6 OK No continuity OK Y NG Check the following
105. or immediately after the engine starts Set conditions e When the idle position switch is for 4 seconds or e The sensor output voltage is 0 2 V or less for 4 seconds ON the sensor output voltage is 2 V or more Malfunction of the maladjustment Improper connector contact open circuit or short circuited harness wire of the throttle position sensor circuit Improper ON state of idle position switch Short circuit of the idle position switch signal line Malfunction of the engine ECU throttle position sensor or NG MUT II Data list Check the idle position switch system 26 Idle position switch system Refer to P 13A 46 INSPECTION OK With the throttle valve at the PROCEDURE 28 idle position ON With the throttle valve slight ly open OFF OK ree NG Check the throttle position sensor _ Replace Refer to P 13A 91 OK y NG NG Measure at the throttle position sensor Check the following connector m Repair connector B 07 C 40 e Disconnect the connector and f OK measure at the harness side y e Voltage between 1 and earth heck t t Ignition switch ON SNEEK WOU IS SyMmpLoN OK 4 8 5 2 V NG e Continuity between 4 and earth M NG OK Continuity Check the harness wire between the JK engine ECU and the throttle position sensor connector m Repair Check the throttle position senso
106. oxygen sensor signal is used to check the air fuel mixture ratio and control condition is also checked by the ECU Engine is idling 2 500 r min 400 mV or less Changes 600 1 000 mV Code No 11 13A 112 Air flow sensor e Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral A T P range Engine is idling 14 40 Hz 2 500 r min 42 82 Hz Engine is raced Frequency increases in response to racing Inspection item MPI lt 6A1 gt Troubleshooting Inspection contents Normal condition Inspection procedure No 13A 163 Reference page Intake air tempera ture sensor Ignition switch ON or with engine running When intake air temperature is 20 C When intake air temperature is 0 C 0 C When intake air temperature is 20 C 20 C When intake air temperature is 40 C 40 C When intake air temperature is 80 C 80 C Code No 13 13A 113 Throttle position sensor Ignition switch ON Set to idle position 300 1 000 mV Gradually open Increases in proportion to throttle opening angle Open fully 4 500 5 500 mV 13A 114 Power supply voltage Ignition switch ON System voltage Procedure No 25 13A 145 Cranking signal ignition switch ST Ignition switch ON Engine St
107. reduced Engine output is reduced in the TCL non operation range TCL indicator lamp does not illuminate and starting and acceleration performance is poor In cases such as the above the electrical system is normal and the cause is probably an abnormality in the mechanical system vacuum actuator Malfunction of vacuum solenoid valve Malfunction of ventilation solenoid valve Malfunction of vacuum actuator Incorrect vacuum hose connector Malfunction of throttle link Malfunction of vacuum tank Blocked air cleaner element As the cause is probably a malfunction of the vacuum actuator system carry out inspection of the following items in order Vacuum solenoid valve operation inspection Refer to GROUP 13A On vehicle Service Ventilation solenoid valve operation inspection Refer to GROUP 13A On vehicle Service Disconnected or mis connected vacuum hose inspection Refer to GROUP 13A On vehicle Service Throttle link operation inspection Refer to GROUP 13A On vehicle Service Vacuum tank inspection Refer to GROUP 13A On vehicle Service Air cleaner element blockage inspection TCL Troubleshooting DATA LIST REFERENCE TABLE Check item Check condition 13H 21 Normal condition APS Accelerator pedal position Engine stop Selector lever position P Fully closed 300 1 000 mV Depressed Gradually rises from the above value Fully open 4 500 5 500 mV Accelerator peda
108. repair if necessary Measure at the diagnosis connector Check the harness wire between the C 20 diagnosis connector and the earth and e Continuity between 4 and earth repair if necessary e Continuity between 5 and earth OK Continuity JoK Replace the MUT II INSPECTION PROCEDURE 2 MUT II communication with engine ECU only is impossi Probable cause ble One of the following causes may be suspected Malfunction of the engine ECU power supply circuit e No power supply to engine ECU Malfunction of the engine ECU Defective earth circuit of engine ECU Malfunction of the immobilizer ECU Defective engine ECU Open circuit between immobilizer ECU and diagnosis Improper communication line between engine ECU and MUT II connector Open circuit between engine ECU and immobilizer ECU No Is communication possible between the MUT II and the immo Check the diagnosis line between the immobilizer ECU and the bilizer ECU MUT II and repair if necessary Refer to GROUP 54 Ignition Yes Switch and Immobilizer System Ad NG Check the following connectors m gt Repair C 54 C 81 C 68 C 66 C 56 lt R H drive vehicles gt C 83 C 20 OK Y Check trouble symptom NG d NG Check the harness wire between the engine ECU and the diagnosis Repair connector OK Li OK Check the harness wire between the engine ECU and
109. seconds immediately after the engine starts e Battery voltage is 10 V or more e Forced actuation by means of MUT II is not being carried out Set condition Solenoid valve drive or non drive instruction and energized condition of solenoid coil are different NG Replace Check the vacuum control solenoid valve Refer to P 13A 201 JoK NG Malfunction of the vacuum control solenoid valve Improper connector contact open circuit or short circuited harness wire of the vacuum control solenoid valve Malfunction of the engine ECU nector B 78 e Disconnect the connector and measure at the Measure at the vacuum control solenoid valve con _ Check the harness wire between the vacuum control solenoid valve connector and the control relay con nector and repair if necessary harness side e Voltage between 2 and earth Ignition switch ON OK System voltage Jok NG NG Measure at the engine ECU connector C 35 e Disconnect the connector and measure at the B 78 gt Check the following connector m Repair harness side OK e Voltage between 32 and earth j Ignition switch ON OK System voltage Check trouble symptom z OK y M NG Check the harness wire between the engine ECU Check the following connector m Repair and the vacuum control solenoid valve connector C 35 and repair if necessary OK Y NG Check troubl
110. sensor system 21 Engine coolant temperature sensor Refer to P 13A 163 Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 OK Y NG MUT II Data list Check the A C switch and A C relay system 28 A C switch Refer to P 13A 164 Refer to P 13A 149 INSPECTION PROCEDURE 33 OK Y Basic idle adjustment Refer to P 13A 188 Y NG Check trouble symptom __ Clean the throttle valve area Refer to P 13A 184 Check and adjust the fixed SAS Refer to P 13A 187 13A 136 INSPECTION PROCEDURE 10 Idling speed is low Improper idling speed MPI lt 6A1 gt Troubleshooting Probable cause In cases such as the above the cause is probably that the intake air volume during e Malfunction of the ISC servo system idling is too small Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the ISC servo for operation sound Refer to P 13A 199 OK Y NG MUT II Data list e 26 Idle position switch Refer to P 13A 164 OK Y NG MUT II Data list gt 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Data list gt 29 Inhibitor switch Refer to P 13A 164 OK Y Basic idle adjustment Refer to P 13A 188 Y NG Check trouble symptom gt e Malfunction of the throttle body Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES
111. switch ON OK System voltage Check trouble symptom z OK y M NG Check the harness wire between the engine ECU Check the following connector m Repair and the ventilation control solenoid valve connector C 35 and repair if necessary OK Y NG Check trouble symptom Replace the engine ECU 13A 126 MPI lt 6A1 gt Troubleshooting INSPECTION CHART FOR TROUBLE SYMPTOMS Trouble symptom Inspection procedure No 13100880361 Reference page Communication with MUT II is impossible Communication with all systems is not possible 13A 128 Communication with engine ECU only is not possible 13A 129 Engine warning lamp and related parts The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position 13A 130 The engine warning lamp remains illuminating and never goes out 13A 130 Starting No initial combustion starting impossible 13A 131 Initial combustion but no complete combustion starting impossible 13A 132 Long time to start improper starting 13A 133 Idling stability Improper idling Unstable idling Rough idling hunting 13A 134 Idling speed is high Improper idling speed 13A 135 Idling speed is low Improper idling speed 13A 136 Idling stability Engine stalls When the engine is cold it stalls at idling Die out 13A 137 When the engine becomes hot
112. switch Pressed to OFF side 0 2V Ignition switch ON TCL switch Released Battery voltage Stop lamp switch input Ignition switch ON Brake pedal depressed Battery voltage Ignition switch ON Brake pedal released 0 2V ABS fail signal During ABS fail 0 2V When ABS is normal Battery voltage TCL OFF indicator Ignition switch ON Indicator Extinguished Battery voltage Ignition switch ON Indicator Illuminated TCL indicator Ignition switch ON Indicator Illuminated Ignition switch ON Indicator Extinguished Battery voltage TCL On Vehicle Service 13H 25 TCL switch mode C1610246 Inspection conditions ON VEHICLE SERVICE 13600090035 SYSTEM CHECK USING THE TCL INDICATOR LAMPS Press the TCL switch and check if each TCL indicator lamp illuminates or switches off TCL OFF indicator A TCL indicator B Switch does not operate Turn the ignition switch to the ON position O O Start the engine x x TCL OFF mode Engine is idling O 2 TCL ON mode NOTE O illuminated X extinguished Caution Drive the vehicle at 30 km h for 2 minutes or No illumination more not relevant If a different result is obtained when checking refer to the Troubleshooting section for remedy TCL OPERATION CHECK 43600110038 lt When using the MUT II gt A 2 Ol Co
113. symptoms NG y Replace the engine ECU 13E 36 INSPECTION PROCEDURE 23 DIESEL FUEL Troubleshooting Check the fuel cut solenoid valve circuit NG Check the fuel cut solenoid valve Refer to P 13E 60 m gt Replace JoK Measure at the fuel cut solenoid valve connector B 55 e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON OK System voltage JoK Check the connector B 55 and repair if necessary INSPECTION PROCEDURE 24 NG Check the following connector C 52 OK Ne Repair AA Check trouble symptoms NG Y Check the harness wire between the fuel cut solenoid valve and solenoid type spill valve relay connectors and repair if necessary Check the EGR solenoid valve circuit NG Replace Check the harness wire between the control relay and EGR solenoid valve connector and repair if necessary Check the following connector Check the EGR solenoid valve Refer to GROUP 17 Emission Control System JoK NG Measure at the EGR solenoid valve connector B 06 e e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON OK System voltage york NG Measure at the engine ECU connector C 53 e Disconnect th
114. system Refer to GROUP 54 Ignition No Switch and Immobilizer System y NG Check the following connectors m gt Repair C 54 C 81 C 66 OK Y Check trouble symptom NG Y OK Check the harness wire between the engine ECU and the immobiliz Replace the immobilizer ECU er ECU NG NG Y Y Check trouble symptom Repair NG y Replace the engine ECU DIESEL FUEL Troubleshooting 13E 23 INSPECTION CHART FOR TROUBLE SYMPTOM Caution Check that the engine ECU earth circuit is normal before checking for the cause of the problem 13300410023 Trouble symptoms Inspection procedure No Reference page Communication with MUT II is impossible MUT II communication with all systems is impossible 1 13E 24 MUT II communication with engine ECU only is impossible 2 13E 24 Engine warning lamp and related parts The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position 3 13E 25 The engine warning lamp remains illuminating and never goes out 13E 25 Starting No initial combustion Starting not possible 13E 26 Poor startability when engine is cold Poor starting 13E 26 Poor startability when engine is cold or warm Poor starting 13E 27 Idling stability Improper idling Idling speed is low when engine is cold Improper idling speed 13E 27 Idling speed is high Improper
115. the EGR control solenoid valve system Refer to P 13A 51 INSPECTION PROCEDURE 36 Check the oxygen sensor rear system Refer to P 13A 24 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 13 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure Refer to P 13A 85 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate e Broken air intake hose 2 Check the injector for Check the power steering fluid pressure switch sys tem Refer to P 13A 49 INSPECTION PROCE DURE 31 clog Check the A C switch and A C relay system Refer to P 13A 49 INSPECTION PROCEDURE 32 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 48 INSPECTION PROCEDURE 30 Adjust the basic idle speed Refer to P 13A 83 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 42 13A 55 MUT II Engine stalling inspection when the engine is warmed up and idling NG MUT II Data list 26 Idle position switch Refer to P 13A 63 NG Jon MUT II Data list 13 Intake air temperature sensor Refer to P 13A 62 NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 63 NG i MUT II Data list
116. the accelerator pedal i e whether it is depressed or released HIGH LOW to the engine ECU The engine ECU controls the idle speed control servo based on this input Maladjustment of the accelerator pedal Maladjustment of the fixed SAS Maladjustment of the idle position switch and throttle position sensor Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or NG Check the idle position switch Refer to P 13A 91 m Replace the throttle position sensor JK NG NG Measure at the throttle position sensor connector B 07 Check the following Repair e Disconnect the connector and measure at the harness side connector C 40 e Voltage between 3 and earth Ignition switch ON OK OK 4 V or higher 1 e Continuity between 4 and earth OK Continuity Check trouble symptom N y y G NG F heck the h ire between engine ECU and throttle position Check the following Repair ee rey ee Pop connector B 07 rg NG y l Repl the engine ECU i Check trouble symptom SPL NS Erg Repair NG y Replace the engine ECU MPI lt 4G6 gt Troubleshooting 13A 47 INSPECTION PROCEDURE 29 Ignition switch ST system lt M T gt Probable cause The ignition switch ST inputs a HIGH signal to the engine ECU while the engine is Malfun
117. the power steering fluid pressure switch connector Check the following Repair B 76 connector C 35 e Disconnect the connector and measure at the harness side OK e Voltage between 1 and earth Ignition switch ON i OK System voltage Check trouble symptom OK NG 1 NG Y NG Check the following Repair Check harness wire be Repair connector B 76 tween engine ECU and OK power steering fluid pres y sure switch connector Check trouble symptom 0K NG y Replace the engine ECU Replace the engine ECU Probable cause When an A C ON signal is input to the engine ECU the engine ECU carries out control of the idle speed control ISC servo and also operates the A C compressor magnetic clutch NG m gt Replace Check the A C compressor relay Refer to GROUP 55 On vehicle Service Malfunction of A C control system Malfunction of A C switch Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or JoK NG Measure at the engine ECU connectors C 33 C 35 __ Check the A C system Refer to GROUP 55 Troubleshooting e Disconnect the connector and measure at the harness side e Voltage between 8 and earth and 45 and earth Ignition switch ON OK 0 3 V A C switch OFF OK NG System voltage A C switch ON m Check the following
118. the valve is closed As the plunger turns and rises fuel is sent out under pressure and when the fuel flow rate reaches the target value for fuel injection the solenoid type spill valve turns off When the solenoid type spill valve turns off the fuel under high pressure inside the plunger is leaked out into the pump chamber and fuel injection is completed FUEL INJECTION TIMING CONTROL The position of the injection pump timer piston is controlled so that fuel injection is carried out at the optimum timing in accordance with the engine running condition The timer piston position is determined by duty control of the timing control solenoid valve which is located in the line between the high pressure chamber and the low pressure chamber of the timer piston The fuel injection timing is advanced by increasing the control duty of the timing control solenoid valve IDLE SPEED CONTROL Controlling the fuel injection rate in accordance with the engine running condition maintains the idle speed at the optimum condition SELF DIAGNOSIS FUNCTION e When an abnormality is detected in any of the sensors or actuators the engine warning lamp illuminates to warn the driver e When an abnormality is detected in any of the sensors or actuators a diagnosis code number corresponding to the problem which occurred is output e The RAM data relating to the sensors and actuators which is stored in the engine ECU can be read using the MUT II In addition the
119. to terminal 3 of each ignition coil connector in turn Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 10 No 1 No 4 terminal 23 No 2 No 3 respectively 6FU2691 Special patterns Pattern height Low Pattern selector Display Engine r min Standard wave pattern Crank angle sensor output wave pattern 0 Approx 1 200 r min T E T Revolution time corresponding to a crank angle of 180 reame 5 BTDC Compression top dead center CULL AL Power transistor control signal pp wave pattern 0 Ignition period oi 6 Spark advance 1 angle ON l Dwell section Time 6FU1681 T1 Time computed by the engine ECU 13A 80 MPI lt 4G6 gt Troubleshooting Wave Pattern Observation Points Point Condition of wave pattern build up section and maximum voltage Refer to abnormal wave pattern examples 1 and 2 Condition of wave pattern build up section and maximum voltage Probable cause Rises from approx 2V to approx 4 5V at the top right Normal 2V rectangular wave Open circuit in ignition primary circuit Rectangular wave at power voltage Power transistor malfunction Examples of Abnormal Wave Patterns e Example 1 Wave pattern during engine cranking Cause of problem Normal wave pattern Open circuit in ignition primary circuit Wave pattern char
120. ture sensor Ignition switch ON or with engine running Engine coolant temperature is 20 C Engine coolant temperature is 0 C Engine coolant temperature is 20 C Engine coolant temperature is 40 C 40 C Engine coolant temperature is 80 C 80 C Barometric pressure sensor Ignition switch ON At altitude of 0 m 101 kPa At altitude of 600 m 95 kPa At altitude of 1 200 m 88 kPa At altitude of 1 800 m 81 kPa Boost sen sor Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral Ignition switch ON At altitude of 0 m 101 kPa At altitude of 600 m 95 kPa At altitude of 1 200 m 88 kPa At altitude of 1 800 m 81 kPa When the engine is suddenly raced Increases Item No Inspection item DIESEL FUEL Troubleshooting Inspection contents Normal condition Inspection procedure No 13E 39 Reference page Diesel fuel temperature sensor Ignition switch ON or with engine running Fuel temperature is 20 C 20 C Fuel temperature is 0 C 0 C Fuel temperature is 20 C 20 C Fuel temperature is 40 C 40 C Fuel temperature is 80 C 80 C Code No 14 13E 11 Vehicle speed sen sor When vehicle is moving Compare the speeds displayed on the speedomet
121. warning lamp illuminated or is an ABS diagnosis code Carry out ABS troubleshooting Refer to GROUP 35B Trouble output shooting No NG Measure at ABS ECU connector A 04 L e Replace the TCL ECU e Ignition switch ON e Measure at the ECU side with the connector connected e Voltage between terminal 3 and body earth e Voltage between terminal 10 and body earth OK 4 8 5 2 V OK Y NG Check the following connectors m gt Repair A 04 C 10 OK Y NG Check trouble symptom __ Check the harness connectors between the ABS ECU and the TCL ECU and repair if necessary TCL Troubleshooting Code No 35 Rear wheel speed sensor circuit system 1 13H 11 Probable cause Code No 36 Rear wheel speed sensor circuit system 2 Diagnosis code No 35 is output if the pulse signal from a rear wheel sensor is momentarily interrupted 0 02 sec because of a transient open circuit in a rear wheel speed sensor Diagnosis code No 36 is output if a rear wheel speed sensor abnormality is judged when the turning speed of both rear wheels is 0 km h for 20 seconds or more while TCL is operating NOTE Malfunction of rear wheel speed sensor Malfunction of harness or connector Malfunction of ABS ECU Malfunction of TCL ECU 1 If the front wheels only are turning while the rear wheels are stationary wheel slip the TCL OFF indicator will start flashing after 20 seconds and the system will be
122. y Check the following connector Repair C 33 OK Y Replace the air flow sensor Check trouble symptom NG Y Replace the engine ECU Code No 13 Intake air temperature sensor system Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts Set conditions e Sensor output voltage is 4 6 V or more corresponding to an intake air temperature of 45 C or less for 4 seconds or e Sensor output voltage is 0 2V or less corresponding to an intake air temperature of 125 C or more for 4 seconds Check the intake air temperature sensor Refer to P 13A 193 JoK NG Measure at the air flow sensor con nector B 12 e Disconnect the connector and measure at the harness side Voltage between 6 and earth Ignition switch ON OK 4 5 4 9 V Continuity between 5 and earth OK Continuity m Replace OK LA NG Check the following connector B 12 OK Y NG m Repair Improper connector temperature sensor circuit Malfunction of the intake air temperature sensor contact short circuited harness wire of the circuit or intake air open Malfunction of the engine ECU NG Check the following connector C 39 m Repair OK Y Check trouble symptom NG Y NG
123. 0 3 V or more M Check the harness between OK the APS and the TCL ECU and repair if necessary NG Check the following con nector C 10 OK Y Check trouble symptom NG Y Replace the TCL ECU m gt Repair 13H 6 TCL Troubleshooting Code No 12 APS or TPS circuit system Probable cause This diagnosis code is output if the APS opening angle is 20 or greater than the Malfunciton of APS TPS opening angle because of a short in the APS an open circuit in the TPS or Malfunction of TPS sticking of the vacuum actuator As this detection condition can be applicable during Malfunction of TCL ECU throttle control trouble diagnosis is invalid at this time Malfunction of engine ECU Malfunction of harness or connector Malfunction of vacuum actuator OK OK NG MUT II Data list Check the APS gt Check the following con _ Repair 13 TPS output Open and close Refer to P 13H 27 nectors the throttle lever NG C 10 C 51 B 41 OK Changes smoothly be OK va 300 mV 5 500 Replace y D Check trouble symptom NG NG NG T NG Vacuum actuator operation in Replace nee ere oe m gt Repair spection Refer to GROUP and repair if necessary 13A On vehicle Service Jok JoK Measure the voltage at TPS Replace the TCL ECU connector B 07 e Ignition switch ON
124. 164 NG OK Y NG MUT II Data list 29 Inhibitor switch Refer to P 13A 164 OK Y NG MUT II Data list 34 Air flow sensor reset signal Refer to P 13A 165 OK Y NG MUT II Data list 45 ISC servo position Refer to P 13A 166 Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Check the intake air sensor system Refer to P 13A 113 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 119 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 Check the EGR control solenoid valve system Refer to P 13A 152 INSPECTION PROCEDURE 37 Check the oxygen sensor rear system Refer to P 13A 122 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 112 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure Refer to P 13A 189 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate Check the power steering fluid pressur
125. 21 Engine coolant temperature sensor Refer to P 13A 62 JoK NG MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 65 JoK MUT II Data list 59 Oxygen sensor rear Refer to P 13A 65 e Transmission 2nd gear lt M T gt L range lt A T gt NG NG e Driving with throttle widely open OK 600 1 000 mV MUT II Data list 11 Oxygen sensor OK Changes between 600 1 000 mV during sudden racing JoK MUT II Data list 11 Oxygen sensor OK Changes between 0 400 mV and 600 1 000 mV during idling NG OK Y NG MUT II Data list 27 Power steering fluid pressure switch Refer to P 13A 63 OK Y NG MUT II Data list 28 A C switch Refer to P 13A 63 OK Y NG MUT II Data list 29 Inhibitor switch Refer to P 13A 63 OK Y NG MUT II Data list 45 ISC servo position Refer to P 13A 64 Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Check the intake air sensor system Refer to P 13A 14 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 20 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Check the EGR control solenoid valve system Refer to P 13A 51 INSPECTION P
126. 3A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Check that the crank angle sensor is installed properly Check the following items Check the ignition coil spark plugs spark plug cables Check the purge control system Check the EGR control system Check the compression pressure Check if foreign materials water alcohol etc got into fuel Check the operation of the power steering control valve MPI lt 6A1 gt Troubleshooting 13A 135 INSPECTION PROCEDURE 9 Idling speed is high Improper idling speed Probable cause In such cases as the above the cause is probably that the intake air volume during Malfunction of the ISC servo system idling is too great e Malfunction of the throttle body Yes MUT II Self Diag code m e Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No M NG Check the ISC servo for operation sound Refer to P 13A 199 Check the ISC servo system OK Refer to P 13A 151 INSPECTION PROCEDURE 35 Y NG MUT II Data list __ Check the idle position switch system 26 Idle position switch Refer to P 13A 164 Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt OK Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Y NG MUT II Data list __ Check the engine coolant temperature
127. 998463 Test harness Inspection of idle speed control servo 6 pin square Inspection using an analyzer MD998478 Test harness Measurement of voltage during trouble 3 pin triangle shooting Inspection using an analyzer MPI lt 4G6 gt Special Tools Troubleshooting 13A 9 Number Name Use MD998709 Adaptor hose Measurement of fuel pressure MD998742 Hose adaptor MD998706 Injector test set Checking the spray condition of injectors MB991607 Injector test harness MB991607 MD998741 Injector test adaptor MD998741 MB991608 TROUBLESHOOTING 13100850256 DIAGNOSIS TROUBLESHOOTING FLOW Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points DIAGNOSIS FUNCTION 13100860358 LSS ENGINE WARNING LAMP CHECK ENGINE LAMP If an abnormality occurs in any of the following items related Ze to the Multipoint Fuel Injection MPI system the engine j warning lamp will illuminate TI D If the lamp remains illuminated or if the lamp illuminates while E the engine is running check the diagnosis code output Engine warning lamp check engine lamp 6FU2688 13A 10 MPI lt 4G6 gt Troubleshooting Engine warning lamp inspection items Engine ECU Oxygen sensor Air flow sensor Intake air temperature sensor Throttle position sensor Engine coolant temperature sensor Crank angle sensor Camshaft position sensor
128. C servo sys slightly depressed eration sound tem Refer to P 13A 50 No Refer to P 13A 95 INSPECTION PROCE Jox DURE 34 e Clean the throttle valve area Refer to P 13A 81 e Check and adjust the fixed SAS Refer to P 13A 83 Y NG Check the ignition timing when cranking Check that the crank angle sensor is installed properly OK Approx 5 BTDC OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if the injectors are clogged e Check the compression pressure e Check fuel lines for clogging e Check if foreign materials water alcohol etc got into fuel MPI lt 4G6 gt Troubleshooting 13A 33 INSPECTION PROCEDURE 7 It takes too long time to start Incorrect starting Probable cause In cases such as the above the cause is probably that the spark is weak and ignition Malfunction of the ignition system is difficult the initial mixture for starting is not appropriate or sufficient compression Malfunction of the injector system pressure is not being obtained Inappropriate gasoline use Poor compression NG Check battery voltage when cranking OK 8 V or higher Check the battery Refer to GROUP 54 Battery OK Y MUT II Check if uncomplete combustion occurs Refer to P 13A 53 INSPECTION PROCEDURE 39 OK Y NG Can any sound be heard from the injectors when cranking e OK Y NG Ch
129. CTION PROCEDURE 33 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 148 INSPECTION PROCEDURE 31 Adjust the basic idle speed Refer to P 13A 188 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 43 13A 155 MUT II Engine stalling inspection when the engine is warmed up and idling NG MUT II Data list 26 Idle position switch Refer to P 13A 164 OK MUT II Data list 13 Intake air temperature sensor Refer to P 13A 163 NG OK Y NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 164 OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 167 OK Y NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 166 e Transmission 2nd gear lt M T gt L range lt A T gt NG e Driving with throttle widely open OK 600 1 000 mV eK MUT II Data list 11 Oxygen sensor front OK Changes between 600 1 000 mV during sudden racing JoK NG MUT II Data list 11 Oxygen sensor front OK Changes between 0 400 mV and 600 1 000 mV during idling OK Y NG MUT II Data list 27 Power steering fluid pressure switch Refer to P 13A 164 OK Y MUT II Data list 28 A C switch Refer to P 13A
130. CTION TABLE 13300390020 When the main sensor malfunctions are detected by the diagnosis function the vehicle is controlled by means of the pre set control logic to maintain safe conditions for driving Malfunctioning item Control contents during malfunction Accelerator pedal position sensor Carries out control as if the accelerator opening angle is at a specified angle 0 approx 10 on the basis of idle position switch inputs ON OFF Boost sensor Carries out control as ifthe intake air pressure is ata specified value 101 kPa Diesel fuel temperature sensor Carries out control as if the fuel temperature is 50 C Engine coolant temperature sensor Carries out control as if the engine coolant temperature is at a specified value 80 C Intake air temperature sensor Carries out control as if the intake air temperature is at a specified value 25 C Vehicle speed sensor Carries out control as if the vehicle is moving Pump operation sensor Controls the injection rate according to the speed reported by the crank angle sensor Crank angle sensor e Reduces the fuel injection rate e Fixes the injection timing at a specified value Ignition switch ST Carries out control as if ignition switch ST is OFF Timing control solenoid valve Reduces the fuel injection rate Solenoid type spill valve Solenoid type spill valve relay is turned off engine stops Correction resistors injection timin
131. CU TERMINALS 13100920292 TERMINAL VOLTAGE CHECK CHART 1 2 Connect a needle nosed wire probe test harness MB991223 or paper clip to a voltmeter probe Insert the needle nosed wire probe into each of the engine ECU connector terminals from the wire side and measure the voltage while referring to the check chart NOTE 1 Make the voltage measurement with the engine ECU connectors connected 2 You may find it convenient to pull out the engine ECU to make it easier to reach the connector terminals 3 The checks can be carried out off the order given in the chart Caution Short circuiting the positive probe between a connector terminal and earth could damage the vehicle wiring the sensor engine ECU or all of them Be careful to prevent this If voltmeter shows any division from standard value check the corresponding sensor actuator and related electrical wiring then repair or replace After repair or replacement recheck with the voltmeter to confirm that the repair has corrected the problem MPI lt 6A1 gt Troubleshooting Engine ECU Connector Terminal Arrangement Terminal No Check item 9FU0393 Check condition Engine condition 13A 169 Normal condition No 1 injector No 2 injector No 3 injector No 4 injector No 5 injector No 6 injector While engine is idling
132. Check the harness wire between the engine ECU and the intake air temperature sensor connector m Repair JoK Replace the engine ECU Check trouble symptom Replace the engine ECU 13A 114 Code No 14 Throttle position sensor system MPI lt 6A1 gt Troubleshooting Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately e after the engine starts Set conditions e When the idle position switch is ON the sensor output voltage is 2 V or more for 4 seconds or e The sensor output voltage is 0 2 V or less for 4 seconds NG MUT II Data list 26 Idle position switch system OK With the throttle valve at the idle position ON With the throttle valve slight ly open OFF OK Y NG Check the throttle position sensor Refer to P 13A 194 OK Y Measure at the throttle position sensor connector B 07 e Disconnect the connector and measure at the harness side e Voltage between 4 and earth Ignition switch ON OK 4 8 5 2 V e Continuity between 1 and earth OK Continuity NG JK Check the throttle position sensor out put circuit Refer to P 13A 160 IN SPECTION PROCEDURE 50 Malfunction of the maladjustment Improper connector contact open circuit or short circuited harness wire of the throttle position sensor circuit
133. Communication with all systems is not possible Communication with engine ECU only is not possible Engine warning lamp and related parts The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position The engine warning lamp remains illuminating and never goes out Starting No initial combustion starting impossible Initial combustion but no complete combustion starting impossible Long time to start improper starting Idling stability Improper idling Unstable idling Rough idling hunting Idling speed is high Improper idling speed Idling speed is low Improper idling speed Idling stability Engine stalls When the engine is cold it stalls at idling Die out When the engine becomes hot it stalls at idling Die out The engine stalls when starting the car Pass out The engine stalls when decelerating Driving Hesitation sag or stumble The feeling of impact or vibration when accelerating The feeling of impact or vibration when decelerating Poor acceleration Surge Knocking Dieseling Too high CO and HC concentration when idling Low alternator output voltage approx 12 3 V Idling speed is improper when A C is operating Fans radiator fan A C condensor fan are inoperative MPI lt 4G6 gt Troubleshooting 13A 27 PROBLEM SYMPTOMS TABL
134. Data list e 26 Idle position switch Refer to P 13A 63 OK 1 NG MUT II Data list e 21 Engine coolant temperature sensor Refer to P 13A 62 OK Y NG MUT II Data list e 29 Inhibitor switch Refer to P 13A 63 OK Y Basic idle adjustment Refer to P 13A 83 Y NG Check trouble symptom gt e Malfunction of the throttle body Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the ISC servo system Refer to P 13A 50 INSPECTION PROCEDURE 34 Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 48 INSPECTION PROCEDURE 30 Clean the throttle valve area Refer to P 13A 81 i Check and adjust the fixed SAS Refer to P 13A 83 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 11 When the engine is cold it stalls at idling Die out 13A 37 Probable cause In such cases as the above the cause is probably that the air fuel mixture is inappropriate when the engine is cold or that the intake air volume is insufficient Malfunction of the ISC servo system Malfunction of the throttle body Malfunction of the injector system Malfunction of the ignition system After warming up
135. E FOR YOUR INFORMATION Items Symptom Starting Won t start The starter is used to crank the engine but there is no combustion within the cylinders and the engine won t start Fires up and dies There is combustion within the cylinders but then the engine soon stalls Hard starting Engine starts after cranking a while Idling stability Hunting Engine speed doesn t remain constant changes at idle Rough idle Usually a judgement can be based upon the movement of the tachometer pointer and the vibration transmitted to the steering wheel shift lever body etc This is called rough idle Incorrect idle speed The engine doesn t idle at the usual correct speed Engine stall Die out The engine stalls when the foot is taken from the accelerator pedal regardless of whether the vehicles is moving or not Engine stall Pass out The engine stalls when the accelerator pedal is depressed or while it is being used Driving Hesitation Sag Hesitation is the delay in response of the vehicle speed engine speed that occurs when the accelerator is depressed in order to accelerate from the speed at which the vehicle is now traveling or a temporary drop in vehicle speed engine speed during such acceleration Serious hesitation is called sag Hesitation Normal Vehicle nitial ac speed celerator Time 1FU0223 Poor acceleration Po
136. E SOLENOID VALVE CHECK 13300730013 NOTE When disconnecting the vacuum hose always make a mark so that it can be reconnected at original position 1 Disconnect the vacuum hose green stripe yellow stripe from the solenoid valve 2 Disconnect the harness connector Throttle actuator DIESEL FUEL On vehicle Service 13E 61 DFU0677 DFU0683 Connect a hand vacuum pump to nipple B of the solenoid valve Use jumper wires to connect the terminals of the solenoid valve and the battery Check the air tightness when negative pressure is applied while the jumper wire is connected to the battery terminal and while it is disconnected Normal condition Jumper wire Nipple A condition Normal condition Connected Open Negative pressure leaks Closed Negative pressure is maintained Disconnected Open Negative pressure leaks 6 Measure the resistance between the terminals of the solenoid valve Standard value 36 44 Q at 20 C THROTTLE ACTUATOR CHECK 13300740016 1 Remove the vacuum hose red stripe from the throttle actuator and connect a hand vacuum pump to the throttle actuator nipple Check that the actuator rod moves smoothly when applying vacuum gradually Also check that the vacuum is maintained when applying 53 kPa of vacuum INJECTION NOZZLE CHECK AND ADJUSTMENT 13300170020 Caution Never touch the injection spray that is injected from the
137. EASSEMBLY 43300350035 om O 6 DENO249 Disassembly steps lt Ap pAd 1 Retaining nut 5 Pressure spring 2 Nozzle tip 6 Shim 3 Distance piece 7 Nozzle holder body 4 Retaining pin DISASSEMBLY SERVICE POINT lt Ap RETAINING NUT REMOVAL 1 Lightly clamp the retaining nut in a vise with soft jaws 2 Hold the retaining nut with a box wrench and loosen the nozzle holder body using a deep socket DENO250 REASSEMBLY SERVICE POINT PA lt RETAINING NUT INSTALLATION 1 Finger tighten the nozzle holder body 2 Lightly clamp the retaining nut in a vise with soft jaws 3 While holding the retaining nut with a box wrench in the same way as during removal use a deep socket wrench to tighten the nozzle holder body to the specified torque DIESEL FUEL Injection Pump and Nozzle 13E 67 Plunger Nozzle tip DENO251 INSPECTION 43300360038 NOZZLE TIP 1 3 Check the nozzle tip for carbon deposits Scape off carbon deposits with a piece of wood and clean each part with petrol After cleaning keep parts submerged in diesel fuel Take particular care to protect the nozzle tip needle valve from damage While the nozzle tip is submerged in diesel fuel check that the needle valve slides smoothly If the needle valve does not slide smoothly replace the nozzle tip When replacing the nozzle tip completely wash off the anticorrosive oil from the new nozzle tip with clean diesel fuel before using it
138. ENSOR CHECK 13100510161 a x n sensor eel ron lt Oxygen sensor front gt a 1 Disconnect the oxygen sensor connector and connect the special tool test harness to the connector on the oxygen sensor side 2 Make sure that there is continuity 11 18 Q at 20 C between terminal 3 and terminal 4 on the oxygen sensor connector 6FU2705 3 If there is no continuity replace the oxygen sensor 4 Warmup the engine until engine coolant is 80 C or higher MB991223 7FU0830 5 Use the jumper wire to connect terminal 3 of the oxygen sensor connector to the battery terminal and terminal 4 to the battery terminal Caution Be very careful when connecting the jumper wire incorrect connection can damage the oxygen sensor 6 Connect a digital voltage meter between terminal 1 and terminal 2 MB991223 7 While repeatedly racing the engine measure the oxygen 7FU0831 sensor output voltage Standard value Engine Oxygen sensor Remarks output voltage When 0 6 1 0 V If you make the air fuel ratio racing the rich by racing the engine engine repeatedly a normal oxy gen sensor will output a voltage of 0 6 1 0 V 8 If the sensor is defective replace the oxygen sensor NOTE For removal and installation of the oxygen sensor refer to GROUP 15 Exhaust Pipe and Main Muffler MPI lt 4G6 gt On vehicle Service 13A 93 ___ Equipment side ___ aa mE N
139. ESHOOTING 13600070039 STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points NOTE Before carrying out trouble diagnosis check to be sure that all of the following items are normal e ls the standard steering wheel being used and has it been correctly installed to the straight ahead position on the steering shaft e Are the size specifications air pressure balance and wear conditions of the tyres and wheels normal e Is the wheel alignment normal e Have any other modifications been made to the engine or suspension which could conceivably have an effect on the TCL system DIAGNOSTIC FUNCTION METHOD OF READING THE DIAGNOSIS CODES Use the MUT II or the warning lamp to read the diagnosis codes Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points NOTE Connect the MUT II to the diagnosis connector 16 pin under the instrument under cover METHOD OF ERASING THE DIAGNOSIS CODES Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points 13H 4 TCL Troubleshooting INSPECTION CHART FOR DIAGNOSIS CODES Code No Diagnosis item 13600330014 Reference page 11 APS circuit system 13H 5 12 APS or TPS circuit system 13H 6 13 TPS circuit system 13H 7 23 Stop lamp switch circuit system 13H 7 24 TCL switch circuit system 13H 8 26 Ignition switch IG2 circuit system
140. F Transmission Neutral A T P range Engine is idling 17 43 Hz 2 500 r min 70 110 Hz Engine is raced Frequency increases in response to racing Intake air temperature sensor Ignition switch ON or with engine running When intake air temperature is 20 C 20 C When intake air temperature is 0 C 0 C When intake air temperature is 20 C When intake air temperature is 40 C When intake air temperature is 80 C 13A 62 Inspection item Inspection contents Normal condition Inspection procedure No Reference page Throttle position sensor Ignition switch ON Set to idle position 300 1 000 mV Gradually open Increases in proportion to throttle opening angle Open fully 4 500 5 500 mV Code No 14 13A 15 Power supply voltage Ignition switch ON System voltage Procedure No 26 Cranking signal ignition switch ST Ignition switch ON Engine Stopped Engine Cranking Procedure No 29 lt M T gt Procedure No 30 lt A T gt Engine coolant temperature sensor Ignition switch ON or with engine running When engine coolant temperature is 20 C When engine coolant temperature is 0 C When engine coolant temperature is 20 C When engine coolant temperature is 40 C When engine coolant temperature is 80 C
141. FOR DIAGNOSIS CODES Check that the crank angle sensor is installed properly Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Check the intake air temperature sensor system Refer to P 13A 14 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 20 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the oxygen sensor rear system Refer to P 13A 24 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor system Refer to P 13A 13 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 11 Replace the oxygen sensor Check trouble symptom NG Check the following items Check the injectors for operation sound Check the injectors for fuel leakage Check the ignition coil spark plugs spark plug cables Check the compression pressure Check the positive crankcase ventilation system Check the purge control system Check the EGR control system Y Check the trouble symptom NG Y Replace the catalytic converter 13A 44 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 23 Low alternator output voltage approx 12 3 V Probable cause The alternator may be defective or malfunctions which are listed in the right column Malfunction of charging system may be suspected Short c
142. FUEL CONTENTS MULTIPOINT FUEL INJECTION MPI ccc cee e eee n eee eee 13A ELECTRONIC CONTROL TYPE CARBURETTOR eee00 13B CONVENTIONAL TYPE CARBURETTOR 00ceeeeeeeeeeee 13C VARIABLE VENTURI TYPE CARBURETTOR 00eeeeeeeees 13D DIESEL FUEL ition tic ieadanea ola tnete ears weer cas 13E FUEL SUPPLY 2 cits apenas ia eee ee eee 13F AUTO CRUISE CONTROL SYSTEM 05 Refer to GROUP 17 TRACTION CONTROL SYSTEM TCL 000s eee eee eee eens 13H NOTE THE GROUPS MARKED BY ARE NOT IN THIS MANUAL 13A 1 13109000195 13A 2 MULTIPOINT FUEL INJECTION MPI CONTENTS MULTIPOINT FUEL INJECTION lt 4G6 gt GENERAL INFORMATION 4 SERVICE SPECIFICATIONS 7 SEALANT ecb acre yeaa een haves pees 7 SPECIAL TOOLS incite ceeetiaonaats 8 TROUBLESHOOTING 200eeeees 9 ON VEHICLE SERVICE 81 Throttle Body Throttle Valve Area Gleanings 81 Idle Position Switch and Throttle Position Sensor Adjustment 0 0005 81 Fixed SAS Adjustment 83 Basic Idle Speed Adjustment 83 Fuel Pressure Test 0 eee eee 85 Fuel Pump Connector Disconnection How to Reduce the Fuel Pressure 88 Fuel Pump Operation Check 88 Component Location 000 0e ee 89 Control Relay and Fuel Pump Relay Continuity CHECK tare c tabard ea E deals weld gets 90 Intake Ai
143. G Measure at the engine ECU con Check the harness wire between nector C 39 the engine ECU and the baromet e Connect the connector ric pressure sensor connector and e Voltage between 85 and earth repair if necessary Ignition switch ON OK 3 7 4 3 V Altitude 0 m 3 2 3 8 V Altitude 1 200 m OK L NG Check the following connector gt Repair C 39 OK Y Check trouble symptom NG Y Replace the engine ECU 13A 120 Code No 31 Detonation sensor system MPI lt 6A1 gt Troubleshooting Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts e Engine speed is approx 5 000 r min or more Set conditions The change in the detonation sensor output voltage detonation sensor peak voltage at each 1 2 revolution of the crankshaft is less than 0 06 V for 200 times in succession Measure at the detonation sensor con nector B 34 e Disconnect the connector measure at the harness side e Continuity between 2 and earth OK Continuity and NG OK Malfunction of the detonation sensor Improper connector contact open circuit or short circuited harness wire of the detonation sensor circuit Malfunction of the engine ECU NG Check the following connectors B 34 C 39 Repair Check the harness wir
144. I203 Standard Wave Pattern Observation conditions Function Special patterns STEPPER MOTOR Measurement Method 1 Disconnect the stepper motor connector and connect the special tool test harness MD998463 in between 2 Connect the analyzer special patterns pickup to the stepper motor side connector terminal 1 red clip of special tool terminal 3 blue clip terminal 4 black clip and terminal 6 yellow clip respectively Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 4 connection terminal 5 connection terminal 17 and connection terminal 18 respectively Pattern height High Pattern selector Display Engine condition When the engine coolant temperature is 20 C or below turn the ignition switch from OFF to ON without starting the engine While the engine is idling turn the A C switch to ON Standard wave pattern The wave pattern appears for an Point B Stepper motor control Immediately after starting the warm engine Point A instant but soon Coil reverse electromotive nduced electromotive force disappears force Approx 3 x 10V from the motor turning signal wave pattern 7FU1204 13A 78 MPI lt 4G6 gt Troubleshooting Wave Pattern Observation Points Check that the standard wave pattern appears when the stepper motor is operating Point A Presence or absence of induced electrom
145. INT pA lt q INJECTOR FUEL PIPE ASSEMBLY FUEL 2 PRESSURE REGULATOR HIGH PRESSURE FUEL HOSE INSTALLATION Apply a drop of new engine oil to the O ring Caution Be sure not to let engine oil in the delivery pipe While turning the injector fuel pipe assembly high pressure fuel hose and fuel pressure regulator to the right and left install the delivery pipe while being careful not to damage the O ring If it does not turn smoothly the O ring may be trapped remove the fuel pressure regulator and then re insert it into the delivery pipe and check once again Tighten the high pressure fuel hose to the standard torque and tighten the fuel pressure regulator and fuel pipe assembly to the specified torque Tightening torque 9 Nm Fuel pressure regulator MPI lt 6A1 gt Throttle Body 13A 207 THROTTLE BODY 13100770293 REMOVAL AND INSTALLATION Pre removal Operation Post installation Operation e Engine Coolant Draining e Air Cleaner Installation Refer to GROUP 14 On vehicle Service e Engine Coolant Supplying e Air Cleaner Removal Refer to GROUP 14 On vehicle Service e Accelerator Cable Adjustment Refer to GROUP 17 On vehicle Service lt Vehicles without traction control system gt A0310060 Removal steps 1 Accelerator cable connection 5 Water hose connection 2 Throttle position sensor connector 6 Vacuum pipe assembly 3 Idle speed control servo connector 7 Throttle body 4 Vacuum hose connecti
146. ION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure Refer to P 13A 85 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate e Broken air intake hose 2 Check the injector for clog MPI lt 4G6 gt Troubleshooting 13A 57 INSPECTION PROCEDURE 44 MUT II Check if surge occurs NG MUT II Data list Check the idle position switch system 26 Idle position switch Refer to P 13A 63 Refer to P 13A 46 INSPECTION PROCEDURE 28 NG MUT II Data list e Check the intake air sensor system Refer to P 13A 14 INSPEC 13 Intake air temperature sensor Refer to P 13A 62 TION PROCEDURE FOR DIAGNOSIS CODE 13 iS NG MUT II Data list gt Check the barometric pressure sensor system Refer to P 13A 20 25 Barometric pressure sensor Refer to P 13A 63 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 OK Y NG MUT II Data list Check the engine coolant temperature sensor system 21 Engine coolant temperature sensor Refer to P 13A 62 Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 OK Y NG MUT II Data list Check the throttle position sensor system Refer to P 13A 15 IN 14 Throttle position sensor R
147. If the operation sound cannot be heard check the stepper motor s activation circuit If the circuit is normal it is probable that there is a malfunction of the stepper motor or of the engine control unit Checking the Coil Resistance 1 2 Disconnect the idle speed control servo connector and connect the special tool test harness Measure the resistance between terminal 2 white clip of the special tool and either terminal 1 red clip or terminal 3 blue clip of the connector at the idle speed control servo side Standard value 28 33 Q at 20 C Measure the resistance between terminal 5 green clip of the special tool and either terminal 6 yellow clip or terminal 4 black clip of the connector at the idle speed control servo side Standard value 28 33 Q at 20 C PURGE CONTROL SOLENOID VALVE CHECK 13100560241 Refer to GROUP 17 Emission Control System EGR CONTROL SOLENOID VALVE CHECK 13100570206 Refer to GROUP 17 Emission Control System 13A 96 MPI lt 4G6 gt Injector INJ ECTOR 13100710332 REMOVAL AND INSTALLATION Pre removal Operation e Fuel Discharge Prevention Refer to P 13A 88 O ring osxo165 10 13 Nm 12 O ring 0320084 i 0510050 Engine oil 00006518 Removal steps 1 PCV hose connection pA lt q 7 Fuel pressure regulator 2 Injector connector AA 8 Delivery pipe 3 Purge control solenoid valve con 9 Insulator nector 10 Insulator 4 EG
148. Ignition switch ON OK System voltage e Jok NG Measure at the engine ECU connector C 34 e Disconnect the connector and measure at the harness side e Voltage between 6 and earth Ignition switch ON OK System voltage OK y NG Check the following Repair connector C 34 OK Check trouble symptom NG Y Replace the engine ECU e Malfunction of solenoid valve e Improper connector contact short circuited harness wire e Malfunction of the engine ECU open circuit or m gt Replace Check the harness wire between control relay and solenoid valve connector and repair if necessary NG Check the following _ Repair connector B 06 OK AA Check trouble symptom NG Y Check the harness wire between engine ECU and solenoid valve connector and repair if necessary 13A 52 INSPECTION PROCEDURE 37 MUT II Inspection of no initial combustion MPI lt 4G6 gt Troubleshooting NG MUT II Data list 16 Power supply voltage Refer to P 13A 62 OK Y No Does the camshaft rotate at the engine cranking When oil filler cap is removed Yes Y Yes MUT II Self Diag code Are diagnosis codes displayed No y No MUT II Data list 22 Crank angle sensor OK Cranking speed is displayed OK Y NG MUT II Actuator test
149. Improper ON state of idle position switch Short circuit of the idle position switch signal line Malfunction of the engine ECU throttle position sensor or Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Replace Check the following connector C 39 NG m Repair OK Y Check trouble symptom NG Y NG Check the harness wire between the engine ECU and the throttle position sensor connector m Repair JoK Replace the engine ECU MPI lt 6A1 gt Troubleshooting 13A 115 Code No 21 Engine coolant temperature sensor system Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts Set conditions e Sensor output voltage is 4 6 V or more corresponding to an engine coolant temperature of 45 C or less for 4 seconds or e Sensor output voltage is 0 1 V or less corresponding to an engine coolant temperature of 140 C or more for 4 seconds Range of Check e Ignition switch ON e Engine speed is approx 50 r min or more Set conditions e The sensor output voltage increases from 1 6 V or less corresponding to an engine coolant temperature of 40 C or more to 1 6 V or more corresponding to an engine coolant
150. Injection Pump and Nozzle Fuel injection pipe Delivery holder or nozzle holder A12M0028 MB990767 MD998719 80120001 Deep socket wrench REMOVAL SERVICE POINTS lt A gt FUEL INJECTION PIPE REMOVAL When loosening nuts at both ends of injection pipe hold the delivery holder for pump side an the injection nozzle holder for nozzle side with wrench and loosen nut Caution After disconnecting the injection pipe be sure to use a plug so that foreign material etc does not get into the pump lt B gt FUEL INJECTION PUMP SPROCKET FUEL INJECTION PUMP REMOVAL 1 Use the special tool to hold the injection pump sprocket and then remove the injection pump sprocket fixing nut 2 After removing the nut install the special tool to the injection pump sprocket 3 Pull the injection pump sprocket off from the pump drive shaft Caution 1 When removing the sprocket care must be taken not to subject the pump drive shaft to an impact 2 After removal the crankshaft should not be turned 4 Remove the fuel injection pump lt C gt NUT FUEL RETURN PIPE REMOVAL 1 While using a spanner or similar tool to hold the hexagonal nut of the fuel return pipe remove the nut Caution If an attempt is made to loosen the nut without first holding the fuel return pipe the pipe may be broken or otherwise damaged 2 Disconnect the fuel return pipe lt qDp FUEL INJECTION NOZZLE AND HOLDER ASSEMBLY REM
151. Karman vortex type Barometric pressure sensor Semiconductor type Intake air temperature sensor Thermistor type Engine coolant temperature sensor Thermistor type Oxygen sensor Zirconia type Vehicle speed sensor Magnetic resistive element type Inhibitor switch Contact switch type Camshaft position sensor Hall element type Crank angle sensor Hall element type Detonation sensor Piezoelectric type Power steering fluid pressure switch Contact switch type Actuators Control relay type Contact switch type Fuel pump relay type Contact switch type Injector type and number Electromagnetic type 4 Injector identification mark CDH275 EGR control solenoid valve Duty cycle type solenoid valve Purge control solenoid valve ON OFF type solenoid valve Fuel pressure Regulator pressure kPa regulator 329 13A 6 MULTIPOINT FUEL INJECTION SYSTEM DIAGRAM MPI lt 4G6 gt General Information Oxygen sensor front gt Engine ECU lt gt 1 Injector 2 Air flow sensor 2 Purge control solenoid valve 3 Intake air temperature sensor 3 Idle speed control servo 4 Throttle position sensor 4 EGR control solenoid valve 6 Idle positionswitch ff BRS EER SS ta SRE ety SAE AERA ESI SRI Se 6 Camshaft position sensor e Fuel pump relay 7 Crank angle sensor e Control relay 8 B
152. MPI lt 4G6 gt Troubleshooting Analyzer _ Special patterns pickup ie seas 6FU2689 Standard wave pattern INSPECTION PROCEDURE USING AN ANALYZER 13100930219 AIR FLOW SENSOR AFS Measurement Method 1 Disconnect the air flow sensor connector and connect the special tool test harness MB991709 in between All terminals should be connected 2 Connect the analyzer special patterns pickup to air flow sensor connector terminal 3 Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 90 Standard Wave Pattern Observation conditions Function Special patterns Pattern height Low Pattern selector Display Engine r min Idle speed The time cycle time T is reduced when the amount of intake air increases Times T1 and T2 are equal Time TFU1199 Wave Pattern Observation Points Check that cycle time T becomes shorter and the frequency increases when the engine speed is increased MPI lt 4G6 gt Troubleshooting JUL UUL 01P0199 Camshaft position sensor connector Analyzer Special patterns Crank angle sensor connector 6FU2690 Standard Wave Pattern Observation conditions Function 13A 73 Examples of Abnormal Wave Patterns Example 1 Cause of problem Sensor interface malfunction Wave pattern characteristics Rectangular wave pattern is output even when
153. MUT II Data list 14 Throttle position sensor Refer to P 13A 62 OK Y NG MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 65 JoK NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 65 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV york NG MUT II Data list 11 Oxygen sensor OK Changes between 600 1 000 mV during sudden racing JoK NG MUT II Data list 11 Oxygen sensor OK Changes between 0 400 mV and 600 1 000 mV during idling Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Check the intake air sensor system Refer to P 13A 14 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 20 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOS TIC CODE 21 Check the throttle position sensor system Refer to P 13A 15 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 14 Check the EGR control solenoid valve system Refer to P 18A 51 INSPECTION PROCEDURE 36 Check the oxygen sensor rear system Refer to P 13A 24 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 13 IN SPECT
154. N Install the APS so that it faces as shown in the illustration and then tighten it with the screw Connect a multimeter between terminal 3 APS output and terminal 4 APS power supply of the APS connector and check that the resistance increases gradually as the throttle valve is opened slowly to the fully open position Check the continuity between terminal 2 idle position switch and terminal 1 earth of the APS connector when the throttle valve is fully closed and fully open Normal condition Throttle valve condition Continuity Fully closed Continuity Fully open No continuity If there is no continuity when the throttle valve is fully closed turn the APS body clockwise and then check again If there is an abnormality replace the APS 13A 214 MPI lt 6A1 gt Throttle Body 2 Throttle position sensor 9EN0592 3 TPS output TPS power supply Idle position switch Vehicles without TCL only 9EN0591 4 B lt THROTTLE POSITION SENSOR TPS INSTALLATION Install the TPS so that it faces as shown in the illustration and then tighten it with the screw Connect a multimeter between terminal 1 TPS power supply and terminal 2 TPS output of the TPS connector and check that the resistance increases gradually as the throttle valve is opened slowly to the fully open position For vehicles without TCL check the continuity between terminal 8 idle position switch and terminal
155. NJECTION MPI lt 4G6 gt 13100010449 GENERAL INFORMATION The Multipoint Fuel Injection System consists of sensors which detect the engine conditions the engine ECU which controls the system based on signals from these sensors and actuators which operate under the control of the engine ECU The engine ECU carries out FUEL INJECTION CONTROL The injector drive times and injector timing are controlled so that the optimum air fuel mixture is supplied to the engine to correspond to the continually changing engine operation condi tions A single injector is mounted at the intake port of each cylinder Fuel is sent under pressure from the fuel tank by the fuel pump with the pressure being regulated by the fuel pressure regulator The fuel thus regulated is distributed to each of the injectors Fuel injection is normally carried out once for each cylinder for every two rotations of the crankshaft The firing order is 1 3 4 2 This is called sequential fuel injection IDLE AIR CONTROL The idle speed is kept at the optimum speed by controlling the amount of air that bypasses the throttle valve in accordance with changes in idling conditions and engine load during idling The engine ECU drives the idle speed control ISC motor to keep the engine running at the pre set idle target speed in accordance with the engine coolant temperature and air IGNITION TIMING CONTROL The power transistor located in the ignition primary circuit tu
156. NUITY CHECK 13100990170 Battery voltage Terminal No 1 Not supplied relay and Ly control relay 6FU2701 Supplied O Equipment side INTAKE AIR TEMPERATURE SENSOR CHECK connector 13100280239 1 Disconnect the air flow sensor connector 2 Measure resistance between terminals 5 and 6 Standard value 2 3 3 0 kQ at 20 C 0 30 0 42 kQ at 80 C Intake air temperature 3 Measure resistance while heating the sensor using a hair sensor drier Normal condition Temperature C Resistance kQ Higher Smaller 4 If the value deviates from the standard value or the resistance remains unchanged replace the air flow sensor assembly ENGINE COOLANT TEMPERATURE SENSOR CHECK 13100310242 Engine coolant temperature se Caution 5 j n Be careful not to touch the connector resin section with the tool when removing and installing 1 Remove the engine coolant temperature sensor 2 With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance Standard value 2 1 2 7 KQ at 20 C 0 26 0 36 kQ at 80 C 3 Ifthe resistance deviates from the standard value greatly replace the sensor 9FUCIS6 MPI lt 4G6 gt On vehicle Service 13A 91 9FU0157 6FU2704 TT Throttle position a sensor NS TPS equipment ai OD Z side connector AA Zo N 6FU2704 Apply sealant to threaded portion
157. OK NG 1 NG Check the harness wire between the Repair engine ECU and the oxygen sensor rear connector JK Replace the engine ECU _____ _ Check the harness wire between the y NG oxygen sensor rear and the earth and Check the following connectors __________ Repair Pair if necessary C 85 C 39 OK Y Check trouble symptom NG Y NG Check the harness wire between the engine ECU and Repair the oxygen sensor rear connector OK Y Replace the oxygen sensor rear Y Check trouble symptom NG Y Replace the engine ECU MPI lt 6A1 gt Troubleshooting 13A 123 Code No 61 Communication wire with A T ECU system Probable cause lt A T gt Range of Check e Malfunction of the harness wire and the connector e 60 seconds or more have passed immediately after engine was started e Malfunction of the engine ECU e Engine speed is approx 50 r min or more e Malfunction of the A T ECU Set conditions The voltage of the torque reduction request signal from the A T ECU is LOW for 1 5 seconds or more NG Check the following connectors m gt Repair C 30 C 37 lt Vehicles without TCL gt C 28 C 35 lt Vehicles with TCL gt OK Y Check trouble symptom NG u OK Check the harness wire between the engine ECU and the A T ECU Replace the engine ECU connector NG Y M Check trouble symptom Repair NG Y
158. ON PROCEDURE 24 Idling speed is improper when A C is operating Probable cause If the engine ECU detects that the air conditioner is on it activates the idle Malfunction of the A C control system speed control ISC servo to control idle up operation Improper connector contact open circuit or The A C ECU judges if the load caused by air conditioner operation is high or short circuited harness wire low and converts it to voltage signal high or low voltage and inputs the signal Malfunction of the engine ECU to the engine ECU Based on this voltage signal the engine ECU controls the idle up speed for high or low load OK Measure at the engine ECU connector C 37 Check the following connector e Connect the connector C 37 e Voltage between 57 and earth Engine at idle outside air OK NG temperature 25 C or more OK 0 3 V When A C is MAX COOL condition when Repair the load by A C is high System voltage When A C is MAX HOT condition Y when the load by A C is low Check trouble symptom NG NG Y Check the A C system Refer to GROUP 55 On vehicle Service Replace the engine ECU MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 25 Fans radiator fan A C condenser fan are inoperative 13A 145 Probable cause The engine ECU outputs a duty signal to the fan controller depending on the engine coolant temperature vehicle speed and air condi
159. OSIS CODE 41 Clean the throttle valve area Refer to P 13A 81 e Check and adjust the fixed SAS Refer to P 13A 83 While carrying out an intermittent malfunction simulation test Refer to GROUP 00 Points to Note for Intermittent Malfunctions check for sudden changes in the signals shown below e Crank angle sensor signal e Primary and secondary e Air flow sensor signal ignition signal e Injector drive signal e Fuel pump drive signal e Engine ECU power supply voltage Refer to GROUP 11A On vehicle Service Yes Were the battery terminals disconnected No Y Yes MUT II Self Diag code Are diagnosis codes displayed No M NG Check the ISC servo for operation sound Refer to P 13A 95 OK 1 NG Check the injector for operation sound gt OK Y Yes Does the engine stall right after the accelerator pedal is released __ No Y No Does the engine stall easily again gt Yes Y MUT II Engine stalling inspection when the engine is warm and idling Refer to P 13A 55 INSPECTION PROCEDURE 42 OK Y NG Check the ignition timing gt e Check that the crank angle sensor is installed properly OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if the injectors are clogged e Check the compression pressure e Check if f
160. OVAL Using a deep socket wrench remove the fuel injection nozzle and holder assembly Caution 1 Make a mark on the removed injection nozzle assembly the cylinder No 2 Use a cap to prevent foreign material etc from entering the injection nozzle hole DIESEL FUEL Injection Pump and Nozzle 13E 65 Holder gasket Nozzle gasket A01R0533 INSTALLATION SERVICE POINTS pA lt q NOZZLE GASKET HOLDER GASKET INSTALLATION Clean the cylinder head s injection nozzle hole and insert a new gasket B4 FUEL INJECTION NOZZLE AND HOLDER ASSEMBLY INSTALLATION Use a deep socket wrench in the same way as during removal to tighten to the specified torque Tightening torque 49 59 Nm gt C FUEL RETURN PIPE NUT INSTALLATION While holding the hexagonal nut on the fuel return pipe with a spanner in the same way as during removal tighten the nut to the specified torque Tightening torque 29 Nm Caution If an attempt is made to tighten the nut without first holding the fuel return pipe the pipe may be broken or otherwise damaged gt D FUEL INJECTION PIPE INSTALLATION When tightening the nuts at both ends of the fuel injection pipe hold the delivery holder for pump side an the injection nozzle holder for nozzle side with wrench in the same way as during removal and then tighten the nuts to the specified torque Tightening torque 29 Nm 13E 66 DIESEL FUEL Injection Pump and Nozzle DISASSEMBLY AND R
161. Probable cause the ignition switch is turned to the ON position Because there is a burnt out bulb the engine ECU causes the engine warning lamp Burnt out bulb to illuminate for five seconds immediately after the ignition switch is turned to ON Defective warning lamp circuit If the engine warning lamp does not illuminate immediately after the ignition switch Malfunction of the engine ECU is turned to ON one of the malfunctions listed at right has probably occurred NG MUT II Data list Check the engine ECU power supply and earth circuit 16 Engine ECU power supply voltage Refer to P 13A 163 Refer to P 13A 158 INSPECTION PROCEDURE 46 oK OK NG Measure at the engine ECU connector C 35 gt Check the following Repair e Disconnect the connector and measure at the harness side connector C 35 e Earth the terminal No 36 OK OK The engine warning lamp illuminates NG Check trouble symptom Na Y NG Check a burnt out bulb Replace Replace the engine ECU OK 1 NG Measure at the combination meter connector D 03 __ Check the engine warning lamp power supply circuit and repair e Disconnect the connector and measure at the harness side if necessary e Voltage between 4 and earth Ignition switch ON OK System voltage OK e NG Check the following connectors m gt
162. R solenoid valve connector lt qAp pAd 11 Injector Aq 5 High pressure fuel hose connection 12 Grommet 6 Fuel return hose connection MPI lt 4G6 gt Injector 13A 97 REMOVAL SERVICE POINT lt qAp DELIVERY PIPE INJECTOR REMOVAL Remove the delivery pipe with the injectors attached to it Caution Care must be taken when removing the delivery pipe not to drop the injector INSTALLATION SERVICE POINT pA lt INJECTOR FUEL PRESSURE REGULATOR 1 HIGH PRESSURE FUEL HOSE INSTALLATION Apply a drop of new engine oil to the O ring Caution Be sure not to let engine oil in the delivery pipe While turning the injector high pressure fuel hose and fuel pressure regulator to the right and left install the delivery pipe while being careful not to damage the O ring After installing check that the hose turns smoothly If it does not turn smoothly the O ring may be trapped remove the fuel pressure regulator and then re insert it into the delivery pipe and check once again Tighten the high pressure fuel hose to the standard torque and tighten the fuel pressure regulator to the specified torque Tightening torque 9 Nm Fuel pressure regulator 13A 98 MPI lt 4G6 gt Throttle Body THROTTLE BODY 13100770132 REMOVAL AND INSTALLATION Pre removal Operation Post installation Operation e Engine Coolant Draining e Air Cleaner Installation Refer to GROUP 14 On vehicle Service e Engine Coolant Supplying e Air Cleaner Remov
163. ROCEDURE 36 Check the oxygen sensor rear system Refer to P 13A 24 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 13 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure Refer to P 13A 85 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate Check the power steering fluid pressure switch sys tem Refer to P 13A 49 INSPECTION PROCE e Broken air intake DURE 31 hose 2 Check the injector for clog Check the A C switch and A C relay system Refer to P 13A 49 INSPECTION PROCEDURE 32 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 48 INSPECTION PROCEDURE 30 Adjust the basic idle speed Refer to P 13A 83 13A 56 INSPECTION PROCEDURE 43 MPI lt 4G6 gt Troubleshooting MUT II Check if hesitation sug stumble or poor acceleration occurs NG MUT II Data list 26 Idle position switch Refer to P 13A 63 NG iS MUT II Data list 13 Intake air temperature sensor Refer to P 13A 62 NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 63 l MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 62 NG OK Y NG
164. Replace the A T ECU Code No 64 Alternator FR Terminal System Probable cause Range of Check Set Conditions e Open circuit in alternator FR terminal circuit e The alternator FR terminal signal voltage remains high for approximately 20 seconds Malfunction of the engine ECU while the engine is running OK Measure at the alternator connector B 38 Replace the engine ECU e Connect the connector e Voltage between 4 and earth Engine Idling Radiator fan Stopped Headlamp OFF gt ON OK 1 8 2 4 gt 1 0 1 6 V Na NG NG Measure at the alternator connector B 38 gt Check the following Repair e Disconnect the connector and measure at the harness side connectors B 31 C 37 e Voltage between 4 and earth OK Ignition switch ON OK 48 oe Check trouble symptom OK N Y NG f G Check the following connector B 38 m Repair OK NG Y Check the harness wire gt Repair Check trouble symptom between the engine ECU NG and the alternator con nector Y NG OK Check the harness wire between the engine ECU and the alternator gt Repair connector f OK Replace the engine ECU Replace the alternator 13A 124 MPI lt 6A1 gt Troubleshooting Probable cause Code No 71 Vacuum control solenoid valve system lt Vehicles with TCL gt Range of Check e Ignition switch ON e Excluding 60
165. Select lever N range gt D range Increases by 5 50 steps A C relay Engine After having warmed up Engine is idling A C switch OFF OFF Compressor clutch is not operating A C switch ON ON Compressor clutch is operating Inspection item MPI lt 4G6 gt Troubleshooting Inspection contents Normal condition Inspection procedure No 13A 65 Reference page Oxygen sensor rear Inspection item Transmission 3 500 r min 2nd gear lt M T gt L range lt A T gt Drive with throttle widely open Drive contents ACTUATOR TEST REFERENCE TABLE Inspection contents 600 1 000 mV Normal condition Code No 59 Inspection procedure No 13A 24 13100900357 Reference page Injectors Cut fuel to No 1 injector Cut fuel to No 2 injector Cut fuel to No 3 injector Cut fuel to No 4 injector Engine After having warmed up Engine is idling Cut the fuel supply to each injector in turn and check cylinders which don t affect idling Idling condition becomes different becomes unsta ble Code No 41 13A 21 Fuel pump Fuel pump operates and fuel is recircu lated Engine Cranking Fuel pump Forced driving Inspect according to both the above conditions Pinch the return hose with fingers to feel the pulse of the fuel being recirculated Pulse
166. TION PROCEDURES 8 Idling speed is low when engine is cold Probable cause Improper idling speed The cause is probably a malfunction of the control system injection pump or fuel Malfunction of the control system system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the engine ECU No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 yes OK NG Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items e Injection nozzle e Injection pump e Fuel filter 13E 28 DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 9 Idling speed is high Improper idling speed Probable cause The cause is probably a malfunction of the control system injection nozzles or injection Malfunction of the control system pump Malfunction of the injection nozzles Malfunction of the injection pump Malfunction of the engine ECU No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 yes OK NG Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items e Injection nozzle e Injection pump e Starter switch input signal INSPECTION PROCEDURE 10 Idling speed is low Improper idling speed Probab
167. The time cycle time T is reduced when the engine speed increase a TDC Top dead centre Wave Pattern Observation Points Time A a No 1 TDC No 3 TDC No 4 TDC No 2 TDC DFUO067S Check that cycle time T becomes shorter when the engine speed increases 13E 50 DIESEL FUEL Troubleshooting JULI UL 01P0199 Analyzer Special patterns pickup DFUO6BO Standard Wave Pattern Observation conditions Function Examples of Abnormal Wave Patterns e Example 1 Cause of problem Sensor interface malfunction Wave pattern characteristics Rectangular wave pattern is output even when the engine is not started e Example 2 Cause of problem Loose timing belt Abnormality in sensor disk Wave pattern characteristics Wave pattern is displaced to the left or right PUMP OPERATION SENSOR Measurement Method 1 Disconnect the pump operation sensor connector and connect the special tool test harness MB991348 in between All terminals should be connected 2 Connect the analyzer special patterns pickup to pump operation sensor connector terminal 1 Alternate Method Test harness not available Connect the analyzer special patterns pickup to engine ECU terminal 10 Special patterns Pattern height Low Pattern selector Display Engine r min Idle speed DIESEL FUEL Troubleshooting 13E 51 Standard wave pattern 2 engine revolutions 1 camshaft revolution
168. Throttle valve fully open OK e Ne Check the harness wire between engine ECU and throttle position sensor connector and repair if necessary INSPECTION PROCEDURE 50 NG Repair Check the following connector C 40 OK Check trouble symptom NG Y Replace the engine ECU Check injector control circuit NG Measure at the engine ECU connector C 34 e Disconnect the connector and measure at the harness side e Voltage between 1 2 14 15 and earth Ignition switch ON OK System voltage OK Y NG Check the following connector C 34 gt OK y Check trouble symptom NG Y Replace the engine ECU NG Check the following Repair connectors B 02 B 03 B 05 B 36 OK Y Check trouble symptom NG Y Check the harness between engine ECU and injector connector and repair if necessary Repair MPI lt 4G6 gt Troubleshooting DATA LIST REFERENCE TABLE Caution 13A 61 13100890289 When shifting the select lever to D range the brakes should be applied so that the vehicle does not move forward NOTE 1 In a new vehicle driven approximately 500 km or less the air flow sensor output frequency is sometimes 10 higher than the standard frequency 2 The idle position switch normally turns off when the voltage of the throttle position sensor
169. U and the boost sensor con nector OK pne Repair Replace the engine ECU Check the harness wire between the engine ECU and the boost sensor con nector OK Ne Repair Check the vacuum hose between the boost sensor and the intake manifold OK pne Repair Replace the boost sensor DIESEL FUEL Troubleshooting Code No 13 Barometric pressure sensor system 13E 11 Probable cause Range of Check Set Conditions e Malfunction of the engine ECU e An abnormal signal being output from the barometric pressure sensor is detected for 3 seconds OK MUT II Data list 03 Barometric pressure sensor Na Replace the engine ECU Code No 14 Diesel fuel temperature sensor system INTERMITTENT MALFUNCTIONS Probable cause Range of Check e Open or short circuit is detected in diesel fuel temperature sensor circuit for 4 seconds NG Check the diesel fuel temperature sensor Refer to P 13E 59 JoK NG Measure at the diesel fuel temperature sensor connector B 62 e Disconnect the connector and measure at the harness side connector Voltage between 1 and earth Ignition switch ON OK 45 55 V Continuity between 2 and earth OK Continuity e OK Y Check the following connector B 62 OK NG Repair AA Check trouble symptom NG Y Replace the engine ECU
170. U power source Refer to P 13A 163 OK Y No Does the camshaft rotate at the engine cranking gt When oil filler cap is removed Yes Yes MUT II Self Diag code e Are diagnosis codes displayed No Y No MUT II Data list gt 22 Crank angle sensor OK Cranking speed is displayed OK Y NG MUT II Actuator test So 07 Fuel pump Refer to P 13A 167 OK Y NG MUT II Data list m 21 Engine coolant temperature sensor Refer to P 13A 163 Check the power supply and ignition switch IG system Refer to P 13A 145 INSPECTION PROCEDURE 26 Check timing belt for breakage Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the crank angle sensor system Refer to P 13A 116 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 22 Check the fuel pump system Refer to P 13A 146 INSPECTION PROCEDURE 27 Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 MPI lt 6A1 gt Troubleshooting 13A 153 INSPECTION PROCEDURE 39 Ignition system Inspection of no initial combustion NG Does the engine tachometer display the cranking speed Check the ignition circuit system e Set the tachometer of primary voltage detection type Refer to P 13A 150 INSPECTION PROCEDURE 34 joK NG Check the ignition timing when cranking __ Check the installation condition of crank angle sensor and timi
171. When checking the No 1 cylinder Connect the analyzer special patterns pickup to engine ECU terminal 14 When checking the No 2 cylinder Connect the analyzer special patterns pickup to engine ECU terminal 2 When checking the No 3 cylinder Connect the analyzer special patterns pickup to engine ECU terminal 15 When checking the No 4 cylinder 13A 76 MPI lt 4G6 gt Troubleshooting Standard Wave Pattern Observation conditions Function Special patterns Pattern height Variable Variable knob Adjust while viewing the wave pattern Pattern selector Display Engine r min Idle speed Standard wave pattern Point A Solenoid back electromotive force Approx 7x10 V Point B Injector drive time od Power voltage t Drive signal ON Drive signal OFF Time 7FU1202 Wave Pattern Observation Points Point A Height of solenoid back electromotive force Contrast with standard wave pattern Probable cause Solenoid coil back electromotive force is low or doesn t Short in the injector solenoid appear at all Point B Injector drive time e The injector drive time will be synchronized with the MUT II tester display e When the engine is suddenly raced the drive time will be greatly extended at first but the drive time will soon match the engine speed When idling When racing A01P0202 MPI lt 4G6 gt Troubleshooting 13A 77 Analyzer 7FU
172. acteristics Top right part of the build up section cannot be seen and voltage value is approximately 2V too low e Example 2 Wave pattern during engine cranking Cause of problem Malfunction in power transistor Wave pattern characteristics Power voltage results when the power transistor is ON Normal wave pattern MPI lt 4G6 gt On vehicle Service 13A 81 ON VEHICLE SERVICE 13100100306 THROTTLE BODY THROTTLE VALVE AREA CLEANING 1 Start the engine and warm it up until the coolant is heated to 80 C or higher and then stop the engine 2 Remove the air intake hose from the throttle body 3 Plug the bypass passage inlet of the throttle body Caution Do not allow cleaning solvent to enter the bypass passage 4 Spray cleaning solvent into the valve through the throttle body intake port and leave it for about 5 minutes 5 Start the engine race it several times and idle it for about 1 minute If the idling speed becomes unstable or if the engine stalls due to the bypass passage being plugged slightly open the throttle valve to keep the engine running If the throttle valve deposits are not removed repeat steps 4 and 5 Unplug the bypass passage inlet Attach the air intake hose Use the MUT II to erase the self diagnosis code 0 Adjust the basic idle speed Refer to P 13A 83 NOTE If the engine hunts while idling after adjustment of the basic idle speed disconnect the cable from the batt
173. actuators can be force driven under certain conditions OTHER CONTROL FUNCTIONS 1 Power Supply Control When the ignition switch is turned to ON the relay turns on and power is supplied to components such as the timing control solenoid valve 2 Intake Air Throttle Control When the engine is idling after having warmed up the throttle valve is half opened to restrict the amount of intake air in order to reduce vibration and noise 3 A C Relay Control Turns the compressor clutch of the A C ON and OFF 4 Fan motor relay control The radiator fan and condenser fan operating speeds are controlled in accordance with the engine coolant temperature and the vehicle speed 5 Glow Control Refer to GROUP 16 6 EGR Control Refer to GROUP 17 DIESEL FUEL General Information 13E 3 DIESEL FUEL SYSTEM DIAGRAM Pump operation sensor lt gt Engine ECU gt 1 Solenoid type spill valve 2 Crank angle sensor 2 Timing control solenoid valve 3 Engine coolant temperature sensor 3 EGR solenoid valve 4 Boost sensor 4 Throttle solenoid valve 5 Diesel fuel temperature sensor ee Bass 6 Intake air temperature sensor Control relay ee Solenoid type spill valve relay Accelerator pedal position sensor Glow plug relay Idle position switch 1 A C power relay Idle position switch 2 Fan motor relay Power supply voltage Engine warning lamp Ignition switch IG Glow indicator lamp Ignition switch ST Diagnosis signal Vehicle
174. al Refer to GROUP 14 On vehicle Service e Accelerator Cable Adjustment Refer to GROUP 17 On vehicle Service Ao310074 Removal steps 1 Accelerator cable connection 5 Water hose connection 2 Throttle position sensor connector 6 Throttle body 3 Idle speed control servo connector PA 7 Throttle body gasket 4 Vacuum hose connection INSTALLATION SERVICE POINT p A lt THROTTLE BODY GASKET INSTALLATION Place the gasket so that the projecting part is positioned as shown in the illustration and then install it between the intake manifold and the throttle body Towards front of vehicle A0310080 lt Vehicles without auto cruise control system gt pAd MPI lt 4G6 gt Throttle Body 13A 99 DISASSEMBLY AND REASSEMBLY 13100970280 Disassembly steps Throttle position sensor Idle speed control body assembly O ring Throttle body Fixed SAS Speed adjusting screw O ring NOORWh 6EN1375 NOTE 1 The fixed SAS and the speed adjusting screw are correctly adjusted at the factory and should not be removed If the fixed SAS should happen to have been removed carry out fixed SAS adjustment Refer to page 13A 83 If the speed adjusting screw should happen to have been removed carry out speed adjusting screw adjustment Refer to 13A 83 13A 100 MPI lt 4G6 gt Throttle Body lt Vehicles with auto cruise control system gt pad Disassembly steps ONDAN
175. and Y NG i inhibitor switch connector Check harness wire be Repair tween inhibitor switch and joK ignition switch connector Replace the engine ECU JoK Check the ignition switch Refer to GROUP 54 Ignition Switch and Immobilizer system MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 31 Power steering fluid pressure switch system 13A 49 Probable cause The presence or absence of power steering load is input to the engine ECU The engine ECU controls the idle speed control ISC servo based on this input Malfunction of power steering fluid pressure switch Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU INSPECTION PROCEDURE 32 A C switch and A C relay system NG Check the power steering fluid pressure switch m gt Replace Refer to GROUP 37A On vehicle Service J0 NG NG Measure at the power steering fluid pressure switch connector Check the following Repair B 76 connector C 36 e Disconnect the connector and measure at the harness side OK e Voltage between 1 and earth Ignition switch ON i OK System voltage Check trouble symptom OK NG 1 NG Y NG Check the following Repair Check harness wire be Repair connector B 76 tween engine ECU and OK power
176. and measure at the harness side Voltage between 21 and earth Ignition switch ON OK 4 8 5 2 V Fan rotates at high speed Connect a jumper cable between 21 and earth Ignition switch ON OK Fan stops Check the harness wire between the engine ECU and the fan controller con nector m gt Repair JoK joK NG Check the following Repair connector C 34 OK Check trouble symptom NG AA Replace the engine ECU INSPECTION PROCEDURE 26 Check the radiator fan and condenser fan circuit Refer to GROUP 14 Troubleshooting Power supply system and ignition switch IG system Probable cause When an ignition switch ON signal is input to the engine ECU the engine ECU turns the control relay ON This causes battery voltage to be supplied to the engine ECU injectors and air flow sensor NG Check the control relay Refer to P 13A 90 p 0K NG Measure at the control relay connector C 31 e Disconnect the connector and measure at the harness side e Voltage between 3 4 and earth OK System voltage i JOK Check the engine ECU power supply and earth circuit Refer to P 13A 58 INSPECTION PROCEDURE 45 Malfunction of the ignition switch Malfunction of the control relay Improper connector contact short circuited harness wire Disconnected engine ECU earth wire Malfunction of the engi
177. ank angle sensor connector and connect pick up 6AF0356 the special tool test harness MD998478 in between 4 Connect the analyzer special patterns pickup to crank angle sensor terminal 2 Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 88 When checking the top dead centre sensor signal wave pattern 2 Connect the analyzer special patterns pickup to engine ECU terminal 89 When checking the crank angle sensor signal wave pattern Standard Wave Pattern Observation conditions Function Special patterns Pattern height Low Pattern selector Display Engine r min Idle speed MPI lt 6A1 gt Troubleshooting 13A 177 Standard wave pattern 2 engine revolutions 1 camshaft revolution __ The time cycle time T is reduced when the Crank m 75 BTDC p F _ amount of intake air increases angle 5 sensor 5 BTDC output wave pattern Y To ol k TDC sensor output wave pattern l i I l l I 1 I 1 l i t l t 1 j I l l 1 t l 1 i I l L mt 1 I t i 1 t t lj 1 ji i 1 I i I 1 i 1 Time Mm _ Bates A No 1 TDC No 2 TDC No 3 TDC No 4 TDC No 5 TDC No 6 TDC TFU2033 TDC Top dead centre Wave Pattern Observation Points Check that cycle time T becomes shorter and th
178. arometric pressure sensor e A C power relay 9 Engine coolant temperature sensor e Engine warning lamp 10 Detonation sensor e Diagnosis signal 11 Oxygen sensor rear e Ignition coil power transistor aie pevie eres ES SD Sap Me SINS Bs See SS SS es e Fan controller e Power supply voltage e Alternator G terminal e Vehicle speed sensor e A T ECU e A C switch 1 2 e Inhibitor switch e Power steering fluid pressure switch e Ignition switch ST e Ignition switch IG e Alternator FR terminal e A T ECU 3 Intake air temperature sensor 3 Idle speed Air flow sensor with control servo barometric pressure sensor 6 Camshaft position sensor Air cleaner i Air Fuel pressure T Pi a regulator f M rF A 8 2 From fuel 1d To fuel pump Throttle position sensor tank with idle position switch EGR valve PCV valve 1 Injector Canister A 9 Engine coolant e4 temperature sensor Purge control solenoid valve 10 Detonation sensor 1 Oxygen sensor ee Catalytic converter 7 Crank angle sensor 6FU2687 MPI lt 4G6 gt Service Specifications Sealant SERVICE SPECIFICATIONS Items Specifications 13A 7 13100030339 Basic idle speed r min 750 50 Throttle position sensor adjusting voltage mV 400 1 000 Th
179. as if the intake air temperature is 25 C Throttle position sensor TPS No increase in fuel injection amount during acceleration due to the throttle position sensor signal Engine coolant temperature sensor Controls as if the engine coolant temperature is 80 C Camshaft position sensor Injects fuel to all cylinders simultaneously However after the ignition switch is turned to ON the No 1 cylinder top dead centre is not detected at all Barometric pressure sensor Controls as if the barometric pressure is 101 kPa Detonation sensor Switches the ignition timing from ignition timing for super petrol to ignition timing for standard petrol Ignition coil transistor power Cuts off the fuel supply to cylinders with an abnormal ignition Oxygen sensor Air fuel ratio feedback control closed loop control is not performed Communication wire with transmission control unit lt A T gt Ignition timing is not retarded during transmission gear shifting overall engine and transmission control Alternator FR terminal Does not control the output of the alternator according to an electrical load works as a normal alternator 13A 12 MPI lt 4G6 gt Troubleshooting INSPECTION CHART FOR DIAGNOSIS CODES 43100870375 Diagnosis item Reference page Oxygen sensor front system 13A 13 Air flow sensor system 13A 14 Intake air temperature sensor system 13A 14
180. asure at the combination meter connector D 03 Check the following connectors e Disconnect the connector and measure at the harness side C 135 C 131 connector OK NG e Voltage between 4 and earth Ignition switch ON OK System voltage Repair J25 Check the following connectors Check trouble symptom D 03 C 90 NG OK Ne Check the harness wire between the engine warning lamp and A the ignition switch connector and repair if necessary Repair Y NG 3 Check trouble symptom Check the harness wire between the combination meter and the engine ECU connector and repair if necessary INSPECTION PROCEDURE 4 The engine warning lamp remains illuminating and never Probable cause goes out In case such as the above the cause is probably that the engine ECU is detecting Short circuit between the engine warning lamp and a problem in a sensor or actuator or that one of the malfunctions listed at right has the engine ECU occurred e Malfunction of the engine ECU Yes MUT II Self Diagnosis code e Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes output CODES No NG Measure at the combination meter connector D 03 __ Check the harness wire between the combination meter and the e Disconnect the connector and measure at the harness side engine ECU connector and repair if necessary connector e Continuity between 16 and earth OK No continuity JoK Repla
181. avel or during variable speed travel Knocking A sharp sound like a hammer striking the cylinder walls during driving and which adversely affects driving Run on Dieseling Stopping INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS INSPECTION PROCEDURE Communication with MUT II is not possible 1 Communication with all systems is not possible The condition in which the engine continues to run after the ignition switch is turned to OFF Also called Dieseling Probable cause The cause is probably a defect in the power supply system including earth for the diagnosis line e Malfunction of the connector e Malfunction of the harness wire NG NG Measure at the diagnostic connector 16 pin C 20 e Voltage between 16 and earth OK Battery voltage pe Check the following connectors C 66 C 63 C 132 C 141 lt L H gt C 62 C 14 lt R H gt OK JoK NG Repair Check trouble symptom NG Check the harness wire between the power supply and diagnostic connector 16 pin and repair if necessary Measure at the diagnostic connector 16 pin C 20 e Continuity between 4 and earth e Continuity between 5 and earth OK Continuity Check the harness wire between the diagnostic connector 16 pin and earth and repair if necessary oK Replace the MUT II MPI lt 6A1 gt
182. been changed by mistake the idle speed may become too high or the idle speed may drop too low when loads from components such as the A C are placed on the engine If this occurs adjust by the following procedure 3 The adjustment if made should be made after first confirming that the spark plugs the injectors the idle speed control servo the compression pressure etc are all normal Before inspection and adjustment set the vehicle to the pre inspection condition Connect the MUT II to the diagnosis connector 16 pin NOTE When the MUT II is connected the diagnosis control terminal should be earthed Start the engine and run at idle 13A 84 MPI lt 4G6 gt On vehicle Service 6FU2696 4 om Select the item No 30 of the MUT II Actuator test NOTE This holds the ISC servo at the basic step to adjust the basic idle speed Check the idle speed Standard value 750 50 r min NOTE 1 The engine speed may be 20 to 100 r min lower than indicated above for a new vehicle driven approximately 500 km or less but no adjustment is necessary 2 If the engine stalls or the engine speed is low even though the vehicle has been driven approximately 500 km or more it is probable that deposits are adhered to the throttle valve so clean it Refer to P 13A 81 If not within the standard value range turn the speed adjusting screw SAS to make the necessary adjustment NOTE I
183. between 22 and earth Ignition switch ON OK System voltage yoK Check the following connector C 33 OK NG Repair Y Check trouble symptom e NG y Replace the engine ECU INSPECTION PROCEDURE 49 NG e gt Repair Check the following connectors C 92 C 131 OK Y Check trouble symptom NG Y NG Check the harness wire gt Repair between fuel pump relay and ignition switch con nector OK Check the ignition switch Refer to GROUP 54 Ignition Switch and Immobilizer System NG Check the following connector C 32 m Repair OK Check trouble symptom NG Y Check the harness wire between engine ECU and fuel pump relay connector and repair if necessary Check air flow sensor AFS control circuit 1 NG Measure at the air flow sensor connector B 12 e Disconnect the connector and measure at the harness side 1 Voltage between 4 and earth Ignition switch ON OK System voltage 2 Voltage between 3 and earth Ignition switch ON OK 4 8 5 2 V 3 Continuity between 5 and earth OK Continuity e 2 3 NG JoK Check the following connector B 12 OK Ne Repair Y Check trouble symptom NG Y Replace the air flow sensor Check the harness wire between the air flow sensor and control relay connector and repair if necessary
184. bitor switch connector and starter Replace the engine ECU OK S terminal and repair if necessary Y NG Check the following Repair NG i connector B 72 Check the following Repair connector ie C 92 Check trouble symptom a eo NG Check trouble symptom Check harness wire be Repair NG tween engine ECU and Y NG f inhibitor switch connector Check harness wire be Repair tween inhibitor switch and yok ignition switch connector Replace the engine ECU joK Check the ignition switch Refer to GROUP 54 Ignition Switch and Immobilizer system MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 32 Power steering fluid pressure switch system 13A 149 Probable cause The presence or absence of power steering load is input to the engine ECU The engine ECU controls the idle speed control ISC servo based on this input Malfunction of power steering fluid pressure switch Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU INSPECTION PROCEDURE 33 A C switch and A C relay system NG Check the power steering fluid pressure switch m gt Replace Refer to GROUP 37A On vehicle Service J0 NG NG Measure at
185. ce the engine ECU 13E 26 DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 5 No initial combustion Starting not possible Probable cause The cause is probably a malfunction of the control system injection nozzles injection Malfunction of the control system pump glow system or power supply Malfunction of the injection nozzles Malfunction of the injection pump Malfunction of the glow system Malfunction of the immobilizer system Malfunction of the engine ECU Yes Is immobilizer ECU diagnosis code output Check the immobilizer system Refer to GROUP 54 Ignition No Switch and Immobilizer System Y No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 Yes OK Ne Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items Glow plug glow plug relay Battery Fuel cut solenoid valve Injection nozzle Compression pressure Injection pump Contamination water kerosene etc in fuel Immobilizer system INSPECTION PROCEDURE 6 Poor startability when engine is cold Poor starting Probable cause The cause is probably a malfunction of the control system injection pump fuel system Malfunction of the control system air intake system or glow system Malfunction of the injection pump Malfunction of the fuel sy
186. cle Service Malfunction of the ignition system Malfunction of air fuel ratio control system Malfunction of the ISC system Drawing air into intake system Improper connector contact After warming up let the engine run at idling for 10 minutes Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the ISC servo system Refer to P 13A 151 INSPECTION PROCEDURE 35 Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Clean the throttle valve area Refer to P 13A 184 Check and adjust the fixed SAS Refer to P 13A 187 While carrying out an intermittent malfunction simulation test Refer to GROUP 00 Points to Note for Intermittent Malfunctions check for sudden changes in the signals shown below e Crank angle sensor signal e Primary and secondary e Air flow sensor signal ignition signal e Injector drive signal e Fuel pump drive signal e Engine ECU power supply voltage Check that the crank angle sensor is installed properly OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if the injectors are clogged e Check the compression pressure e Check if foreign materials water alcohol etc got into fuel MPI lt 6A1 gt Troubleshooting 13A 139 INSPECTION PROCEDURE 13 The engi
187. connectors m gt Repair C 98 C 75 C 11 OK Y Check trouble symptom NG d NG Inspect the harness between the TCL switch and the TCL ECU _ _ Repair OK Y Replace the TCL ECU Code No 26 Ignition switch IG2 circuit system Probable cause This diagnosis code is output if the IG2 power supply is not distributed even though Malfunction of harness or connector the engine speed is 450 r min or more e Malfunction of TCL ECU OK NG Measure the voltage at TCL ECU connector C 11 gt Check the following ____ Repair e Ignition switch ON connector e Disconnectthe TCL ECU connector and measure at the harness C 11 side OK e Between terminal 35 and body earth OK System voltage Check trouble symptom NG Ne Replace the TCL ECU Ad NG Check the following connectors m gt Repair C 131 C 134 C 66 C 75 C 11 OK Y Check trouble symptom NG Y Check the harness between the ignition switch and the TCL ECU and repair if necessary TCL Troubleshooting 13H 9 Code No 27 TCL ECU power supply voltage circuit Probable cause engine control relay circuit system This diagnosis code is output if the TCL ECU power supply voltage engine control Malfunction of control relay relay supply voltage is lower than the specified value e Malfunction of harness or connector If the voltage returns to the specified value or great
188. considered that there is an abnormality in the Malfunction of steering wheel sensor steering wheel sensor ST N circuit system when the straight ahead position is Malfunction of harness or connector continuously detected even though the steering wheel is turned 20 or more e Malfunction of TCL ECU OK NG Measure at TCL ECU connector C 11 gt Check the following Repair e Connector connected connector e Voltage between terminals 32 and the body earth C 11 OK Changes between approx 3V and approx 0 5 V when OK the steering wheel is turned NG Check trouble symptom Ne Replace the TCL ECU NG Check the following connectors m gt Repair C 11 C 75 C 106 OK M NG Inspect the harness between the steering wheel sensor and the _ Repair TCL ECU OK Y Replace the steering wheel sensor 13H 14 Code No 71 Engine ECU communication circuit system TCL Troubleshooting Probable cause This diagnosis code is output if an error is detected in the communication contents because of an open or short circuit in the serial communication circuit between the TCL ECU and the engine ECU a malfunction of ECU and a defective shielding of the shield wire Malfunction of harness or connector Malfunction of TCL ECU Malfunction of engine ECU NG Check the following connectors C 10 C 51 C 37 m gt
189. control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the engine ECU Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK Na Repair Check the following items e Injection nozzle e Injection timing e Injection pump Probable cause The cause is probably a malfunction of the control system injection pump fuel system air intake system or EGR system Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake system Malfunction of the EGR system No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES Malfunction of the engine ECU Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK NG Repair Check the following items Air cleaner Injection nozzle Throttle body assembly EGR system Turbocharger Injection pump Injection timing 13E 32 INSPECTION PROCEDURE 17 Abnormally white smoke DIESEL FUEL Troubleshooting Probable cause The cause is probably a malfunction of the control system injection pump fuel system air intake system EGR system or glow system Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake syste
190. ction of ignition switch cranking Improper connector contact open circuit The engine ECU controls fuel injection etc during starting based on this input short circuited harness wire Malfunction of the engine ECU or 1 N NG Measure at the engine ECU connector C 40 ne gs Check the following __ _ Repair e Disconnect the connector and measure at the harness side connector C 92 1 Voltage between 71 and earth Ignition switch START 2 NG OK OK 8V or more y 2 Continuity between 91 and earth Check trouble symptom OK Continuity NG OK Y NG Y NG Check harness wire be Repair Check the following Repair tween the engine ECU connector C 40 and ignition switch con OK nector Check trouble symptom Jok NG Check the ignition switch Y Refer to GROUP 54 Ignition Switch and Immobilizer system Replace the engine ECU L Check the harness wire between engine ECU connector terminal No 91 and earth and repair if necessary 13A 48 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 30 Ignition switch ST and inhibitor switch system lt A T gt Probable cause e The ignition switch ST inputs a HIGH signal to the engine ECU while the engine Malfunction of ignition switch is cranking Malfunction of inhibitor switch The engine ECU controls fuel injection etc during startin
191. d measure at the harness side 1 Voltage between 3 and earth Ignition switch ON OK System voltage 2 Voltage between 2 and earth Ignition switch ON OK 4 8 5 2 V 3 Continuity between 1 and earth OK Continuity Malfunction of the camshaft position sensor Improper connector contact open circuit or short circuited harness wire of the camshaft position sensor circuit Malfunction of the engine ECU OK Y NG Check the following con Repair nector B 64 OK Y Check trouble symptom NG Y Replace the camshaft position sensor OK m Replace the engine ECU 1 NG __ Check the harness wire between the camshaft position sensor and the control relay connector and repair if necessary 2 NG NG Check the following con Repair nector C 40 3 NG OK Y Check trouble symptom NG Y NG Check the harness wire between the engine ECU and the camshaft position sensor connector m Repair JoK Replace the engine ECU Check the harness wire between the camshaft position sensor and the earth and repair if necessary MPI lt 4G6 gt Troubleshooting Code No 24 Vehicles speed sensor system 13A 19 Probable cause Range of check Ignition switch ON Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts Idle position switch
192. e 4 If the resistance is outside the standard value or if it doesn t change smoothly replace the accelerator pedal position sensor NOTE For the accelerator pedal position sensor adjustment procedure refer to P 13E 53 IDLE POSITION SWITCH 1 CHECK Accelerator pedal Z 1 Disconnect the accelerator pedal position sensor ngor connector 2 Check the continuity between the accelerator pedal position sensor connector side terminal 3 and terminal 4 Normal condition 13300640019 APS equipment side connector Accelerator pedal Continuity DFU0688 Non conductive Depressed Released Conductive 0 Q 3 If out of specification replace the idle position switch 1 NOTE After replacement the accelerator pedal position sensor should be adjusted Refer to P 13E 53 IDLE POSITION SWITCH 2 CHECK 1 Disconnect the idle position switch 2 connector Idle position switch 2 2 Check the continuity between the idle position switch a 2 terminal and body earth Normal condition 13300650012 DFUOG66 Accelerator pedal Continuity Depressed Non conductive Released Conductive 0 Q If out of specification replace the idle position switch 2 NOTE After replacement the accelerator pedal position sensor should be adjusted Refer to P 13E 53 DIESEL FUEL On vehicle Service 13E 59 s Ja t Solenoid type spill valve sal i i
193. e 400 1 000 mV If the voltage is outside the standard value check the accelerator pedal position sensor and related harnesses Remove the thickness gauge Turn the ignition switch to OFF Disconnect the MUT II FIXED SAS ADJUSTMENT 13100150318 N A oND Ol NOTE 1 The fixed SAS should not be moved unnecessarily it has been precisely adjusted by the manufacturer 2 Ifthe adjustment is disturbed for any reason readjust as follows Loosen the tension of the accelerator cable sufficiently Back out the fixed SAS lock nut Turn the fixed SAS counterclockwise until it is sufficiently backed out and fully close the throttle valve Tighten the fixed SAS until the point where the throttle lever is touched i e the point at which the throttle valve begins to open is found From that point tighten the fixed SAS 1 turn While holding the fixed SAS so that it doesn t move tighten the lock nut securely Adjust the tension of the accelerator cable Adjust the basic idling speed Adjust the idle position switch and throttle position sensor lt vehicles without TCL gt P 13A 184 throttle position sensor lt vehicles with TCL gt P 13A 186 idle position switch and accelerator pedal position sensor lt vehicles with TCL gt P 13A 186 13A 188 MPI lt 6A1 gt On vehicle Service BASIC IDLE SPEED ADJUSTMENT 13100180355 NOTE 1 The standard idling speed has been adjusted by the speed adjusting screw
194. e Refer to P 13A 65 OK Y MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 65 NG OK Y NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 65 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV york NG MUT II Data list 11 Oxygen sensor OK 600 1 000 mV during sudden racing JoK NG MUT II Data list 11 Oxygen sensor OK Changes between 0 400 mV and 600 1 000 mV during idling OK Y NG MUT II Data list 27 Power steering fluid pressure switch Refer to P 13A 63 OK Y NG MUT II Data list 28 A C switch Refer to P 13A 63 OK Y NG MUT II Data list 29 Inhibitor switch Refer to P 13A 63 OK Y NG MUT II Data list 45 ISC Servo position Refer to P 13A 64 Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Check the intake air temperature sensor system Refer to P 13A 14 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 20 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 16 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21 Check the purge control solenoid valve system Refer to P 13A 51 INSPECTION PROCEDURE 35 Check
195. e and if it is normal check the drive circuit 1 Turn the ignition switch to OFF TAR S 2 When the fuel pump drive connector black is a oot a e vi attached directly to the battery check if the sound Cy 4th fi 9 of the fuel pump operation can be heard NOTE As the fuel pump is an in tank type the fuel pump sound is hard to hear so remove the fuel filler cap and check from the tank inlet 3 Check the fuel pressure by pinching the fuel hose with the fingertips MPI lt 4G6 gt On vehicle Service COMPONENT LOCATION Name Name 13A 89 13100210368 A C relay Engine warning lamp check engine lamp A C switch Fuel pump check terminal Air flow sensor with intake air temperature sensor and barometric pressure sensor Idle speed control servo Ignition coil Camshaft position sensor Inhibitor switch lt A T gt Control relay and fuel pump relay Injectors Crank angle sensor Oxygen sensor front Detonation sensor Oxygen sensor rear Diagnosis connector Power steering fluid pressure switch EGR control solenoid valve Purge control solenoid valve Engine coolant temperature sensor Throttle position sensor with idle position switch Engine ECU Vehicle speed sensor 5FU2698 6FU2695 6FU2700 13A 90 MPI lt 4G6 gt On vehicle Service Equipment side CONTROL RELAY AND FUEL PUMP RELAY connector CONTI
196. e TCL indicator lamp illuminates but the engine is not restrained Caution 1 Inspection should be completed within 20 seconds after the accelerator pedal was depressed If it takes longer than 20 seconds the TCL system function will stop and the engine speed will gradually increase 2 Because the TCL OFF indicator will flash when the TCL system operation is stopped the diagnosis codes should be erased if you notice that the indicator is flashing Refer to P 13H 3 APS connector ie Throttle body TCL On vehicle Service 13H 27 1610359 00006180 STOP LAMP SWITCH CHECK 13600120024 Refer to GROUP 35A On vehicle Service WHEEL SPEED SENSOR CHECK 13600130027 Refer to GROUP 35B On vehicle Service VACUUM SOLENOID VALVE CHECK 13600390012 Refer to GROUP 13A On vehicle Service VENTILATION SOLENOID VALVE CHECK 13600400012 Refer to GROUP 13A On vehicle Service VACUUM TANK CHECK 13600410015 Refer to GROUP 13A On vehicle Service VACUUM ACTUATOR CHECK 13600420018 Refer to GROUP 13A On vehicle Service ACCELERATOR PEDAL POSITION SENSOR APS CHECK 13600430028 1 Disconnect the APS connector 2 Measure the resistance between terminals 1 and 4 of the APS connector Standard value 3 5 6 5 kQ 3 When the accelerator pedal is gradually depressed check that the resistance between terminals 1 and 2 of the APS connector changes smoothly in proportion to the pedal opening amount 4 Ifthe
197. e air temperature is 0 C 3 2 3 8 V Intake air temperature is 20 C 2 3 2 9 V Intake air temperature is 40 C 1 5 21V Intake air temperature is 80 C 0 4 1 0 V Boost sensor Ignition switch ON Altitude is 0 m 2 0 2 6 V Altitude is 1 200 m 1 7 2 3 V Sensor applied voltage Ignition switch ON 4 5 5 5V Fuel injection timing correction resistor Ignition switch ON 0 2 45V Idle position switch 1 Ignition switch ON Accelerator pedal is released 0 1V Accelerator pedal is depressed 4 V or higher 13E 46 Terminal No DIESEL FUEL Troubleshooting Check item Check condition Engine condition Normal condition 44 Accelerator pedal position sensor Ignition switch ON Accelerator pedal is released 0 3 0 8 V Accelerator pedal is fully depressed 4 2 45V Ignition switch ST Engine Cranking 8 V or higher A C switch 1 Engine Idling A C switch is off 0 3V A C switch is on A C compressor is operating 13 15V A C relay Engine Idling A C switch OFF ON A C compressor is operating 13 15 V or momen tarily 6 V or more 0 3V Glow indicator lamp Ignition switch OFF ON Engine coolant temperature is 40 C or less 0 1 V after approx 1 second 11 13 V at engine coolant temperature of 20 C Engine warning lamp
198. e between the detonation sensor and earth and repair if necessary OK Y Check trouble symptom NG 1 OK Check the harness wire between the Replace the detonation sensor Code No 41 Injector system engine ECU and the detonation sensor connector j pne Check trouble symptom Repair e Pr Replace the engine ECU obable cause Range of Check e Engine speed is approx 50 1 000 r min e The throttle position sensor output voltage is 1 15 V or less e Actuator test by MUT II is not carried out Set conditions e Surge voltage of injector coil is not detected for 4 seconds NG Check the injector Refer to P 13A 197 i J0 Measure at the injector connectors B 02 B 03 B 05 B 36 B 40 B 44 e Disconnect the connector and measure at the harness side Voltage between 1 and earth Ignition switch ON OK System voltage NG Replace Malfunction of the injector Improper connector contact open circuit short circuited harness wire of the injector circuit Malfunction of the engine ECU or NG Check the following connectors B 02 B 03 B 05 B 36 B 40 B 44 m Repair JOK NG J0 Check the injector control circuit Refer to P 13A 159 INSPECTION PROCEDURE 51 Check trouble symptom Check the harness wire between the engine ECU and the injector connector and r
199. e compression pressure Check the positive crankcase ventilation system Check the purge control system Check the EGR control system Y Check the trouble symptom NG Y Replace the catalytic converter 13A 144 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 23 Low alternator output voltage approx 12 3 V Probable cause The alternator may be defective or malfunctions which are listed in the right column Malfunction of charging system may be suspected Short circuit in harness between alternator G terminal and engine ECU Malfunction of engine ECU NG NG Measure at the alternator connector Measure at the alternator connector Check the harness wire between the side B 38 B 38 alternator and the engine ECU connec e Connect the connector e Disconnect the connector and tor and repair if necessary Test harness MB991519 measure at the harness side e Voltage between 1 black clip and e Disconnect the engine ECU con earth nector Engine at idle e Continuity between 1 and earth Radiator fan does not run OK No continuity Headlamp OFF gt ON OK Brake lamp OFF ON NG ie on ee Check the harness wire between the _ Repair OK Voltage rises by 0 2 3 5 V oe and the engine ECU connec JoK Jok Check the alternator Refer to GROUP Replace the engine ECU 16 Charging System INSPECTI
200. e connector and measure at the harness side connector e Voltage between 16 and earth Ignition switch ON OK System voltage OK y Check the following connector C 53 OK Ne Repair y NG Check trouble symptoms B 06 OK Ne Repair Y Check trouble symptoms NG Y Check the harness wire between the engine ECU and EGR solenoid valve connector and repair if necessary Replace the engine ECU DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 25 13E 37 Check the glow plug relay circuit NG Check the glow plug relay Refer to GROUP 16 Glow System JoK NG Measure at the glow plug relay connector B 52 e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON Engine coolant temperature 40 C or lower OK System voltage Between approx 4 8 seconds e JoK Check the following connector and repair if necessary B 52 INSPECTION PROCEDURE 26 m gt Replace Check the following connector C 55 OK Ne Repair Y Check trouble symptoms NG Y Check the harness wire between the engine ECU and glow plug relay connector OK Na Repair y Check the glow control system Refer to GROUP 16 Glow System OK Ne Repair Replace the engine ECU Check the A C switch and A C relay circuit Check the A C compressor re
201. e engine ECU NG Check the following connectors C 47 C 83 C 66 C 63 C 132 C 141 lt L H gt C 62 C 14 lt R H gt m Repair OK Y Check trouble symptom NG Y Check the harness wire between engine ECU and battery and repair if necessary Check fuel pump circuit NG NG Measure at the fuel pump connector E 16 Check the following connectors m Repair e Disconnect the connector and measure at the harness side E 11 e Continuity between 2 and earth OK OK Continuity 1 OK Check trouble symptom NG M NG Check the following connectors E 16 E 11 C 123 C 92 B 09 Check the harness wire between fuel pump and earth and repair if necessary OK Y Check trouble symptom gt Repair NG Y NG Check the harness wire between terminal for fuel pump drive and Repair fuel pump connector OK Y Replace the fuel pump MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 48 13A 159 Check the fuel pump drive control circuit NG Measure at the fuel pump relay connector C 32 gt e Disconnect the connector and measure at the harness side e Voltage between 3 4 and earth Ignition switch ON OK System voltage JoK NG Measure at the engine ECU connector C 33 e Disconnect the connector and measure at the harness side e Voltage
202. e engine coolant temperature and vehicle speed GENERAL SPECIFICATIONS Items 13A 103 4 Traction Control Engine output torque is reduced based on signals from the TCL ECU in response to the conditions under which slipping of the driven wheels and turning of the vehicle occur Furthermore reduction of output torque is performed by closing the throttle valve and retarding the ignition timing 5 Purge Control Solenoid Valve Control Refer to GROUP 17 6 EGR Control Solenoid Valve Control Refer to GROUP 17 Specifications Throttle body Throttle bore mm 60 Throttle position sensor Variable resistor type Accelerator pedal position sensor Variable resistor type Idle speed control servo Stepper motor type Stepper motor type by pass air control system with the air volume limiter Idle position switch lt Vehicles without TCL gt Rotary contact type within throttle position sensor Idle position switch lt Vehicles with TCL gt Rotary contact type within accelerator pedal position sensor Engine ECU Identification model No E2T66876 lt Vehicles without TCL gt E2T66877 lt Vehicles with TCL gt Sensors Air flow sensor Karman vortex type Barometric pressure sensor Semiconductor type Intake air temperature sensor Thermistor type Engine coolant temperature sensor Thermistor type Oxygen sensor Zirconia type Vehicle speed sensor Magn
203. e frequency increases when the engine speed is increased Examples of Abnormal Wave Patterns e Example 1 Cause of problem Sensor interface malfunction Wave pattern characteristics Rectangular wave pattern is output even when the engine is not started 01P0199 e Example 2 Cause of problem Loose timing belt Abnormality in sensor disk Wave pattern characteristics Wave pattern is displaced to the left or right 13A 178 MPI lt 6A1 gt Troubleshooting Analyzer INJECTOR Measurement Method Measurement at the front bank No 2 No 4 or No 6 cylinder 1 Disconnect the injector connector and then connect the special tool test harness MB991348 in between Both the power supply side and engine ECU side should be connected 2 Connect the analyzer special patterns pickup to terminal 2 of the injector connector 9FU0595 Measurement at the rear bank No 1 No 3 or No 5 cylinder M Analyzer 1 Disconnect the injector intermediate harness connector 12 and connect the special tool test harness MD998464 iS LNA i 3X4 in between 2 Connect the probe of the oscilloscope to the following Special terminal terminal 2 the black clip of the special tool when observing at the No 1 cylinder terminal 3 the blue clip when observing at the No 3 cylinder terminal 4 the white clip when observing at the No 5 cylinder 7FUI2Z08 Alternate Method Test harness not available 1 Connect the analyzer s
204. e switch sys tem Refer to P 13A 149 INSPECTION PROCE e Broken air intake DURE 32 hose 2 Check the injector for clog Check the A C switch and A C relay system Refer to P 13A 149 INSPECTION PROCEDURE 33 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 148 INSPECTION PROCEDURE 31 Check the air flow sensor system Refer to P 13A 113 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 12 Adjust the basic idle speed Refer to P 13A 188 13A 156 INSPECTION PROCEDURE 44 MPI lt 6A1 gt Troubleshooting MUT II Check if hesitation sug stumble or poor acceleration occurs NG MUT II Data list 26 Idle position switch Refer to P 13A 164 OK Y NG MUT II Data list 13 Intake air temperature sensor Refer to P 13A 163 OK Y NG MUT II Data list 25 Barometric pressure sensor Refer to P 13A 164 OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Data list 14 Throttle position sensor Refer to P 13A 163 OK Y NG MUT I Actuator test 10 EGR control solenoid valve Refer to P 13A 167 OK Y NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 166 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV
205. e symptom e Replace the engine ECU MPI lt 6A1 gt Troubleshooting 13A 125 Code No 72 Ventilation control solenoid valve system lt Vehicles with TCL gt Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds immediately after the engine starts e Battery voltage is 10 V or more e Forced actuation by means of MUT II is not being carried out Set condition Solenoid valve drive or non drive instruction and energized condition of solenoid coil are different NG Check the ventilation control solenoid valve m Replace Refer to P 13A 201 JOK NG Malfunction of the ventilation control solenoid valve Improper connector contact open circuit or short circuited harness wire of the ventilation control solenoid valve Malfunction of the engine ECU Measure at the ventilation control solenoid valve Check the harness wire between the control relay connector B 79 and the ventilation control solenoid valve connector e Disconnect the connector and measure at the and repair if necessary harness side e Voltage between 1 and earth Ignition switch ON OK System voltage Jok NG NG Measure at the engine ECU connector C 35 e Check the following connector m gt Repair e Disconnect the connector and measure at the B 79 harness side OK e Voltage between 31 and earth j Ignition
206. e the engine ECU Code No 31 Detonation sensor system MPI lt 4G6 gt Troubleshooting 13A 21 Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts e Engine speed is approx 5 000 r min or more Set conditions The change in the detonation sensor output voltage detonation sensor peak voltage at each 1 2 revolution of the crankshaft is less than 0 06 V for 200 times in succession Measure at the detonation sensor con nector B 34 e Disconnect the connector measure at the harness side e Continuity between 2 and earth OK Continuity and OK Malfunction of the detonation sensor Improper connector contact open circuit or short circuited harness wire of the detonation sensor circuit Malfunction of the engine ECU NG Check the following connectors B 34 C 40 Repair NG Check the harness wire between the detonation sensor and earth and repair if necessary OK AA Check trouble symptom NG 1 OK Check the harness wire between the Replace the detonation sensor Code No 41 Injector system engine ECU and the detonation sensor connector j pne Check trouble symptom Repair e Replace the engine ECU Probable cause Range of Check e Engine speed is approx 50 1 000 r min e Th
207. e throttle position sensor output voltage is 1 15 V or less e Actuator test by MUT II is not carried out Set conditions e Surge voltage of injector coil is not detected for 4 seconds NG Check the injector Refer to P 13A 93 i J0 Measure at the injector connectors B 02 B 03 B 05 B 36 e Disconnect the connector and measure at the harness side e Voltage between 1 and earth Ignition switch ON OK System voltage NG Replace Malfunction of the injector Improper connector contact open circuit short circuited harness wire of the injector circuit Malfunction of the engine ECU or NG Check the following connectors B 02 B 03 B 05 B 36 m Repair JoK NG JOK Check the injector control circuit Refer to P 13A 60 INSPECTION PRO CEDURE 50 Check trouble symptom Check the harness wire between the control relay and the injector connector and repair if necessary 13A 22 MPI lt 4G6 gt Troubleshooting Code No 44 Ignition coil system Probable cause Range of Check e Engine speed is approx 50 4 000 r min e Excluding deceleration driving and sudden acceleration or deceleration driving Set conditions e Misfire occurs in No 1 and No 4 cylinders or No 2 and No 3 cylinders more than predeterminated times per 1 000 r min 1 N Measure at the ignition coil connector
208. eck the ignition timing when cranking OK Approx 5 BTDC OK Y Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGNOSIS CODE 41 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables e Check if the injectors are clogged e Check the compression pressure e Check if foreign materials water alcohol etc got into fuel 13A 34 INSPECTION PROCEDURE 8 Unstable idling Rough idling hunting MPI lt 4G6 gt Troubleshooting Probable cause In cases as the above the cause is probably that the ignition system air fuel mixture idle speed control ISC or compression pressure is defective Because the range of possible causes is broad inspection is narrowed down to simple items Yes Were the battery terminals disconnected No Y Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y Yes Does idling speed fluctuate excessively No 1 NG Check the ISC servo for operation sound Refer to P 13A 95 OK Y NG Check the injector for operation sound gt OK Y MUT II Check if idling speed is unstable Refer to P 13A 54 INSPECTION PROCEDURE 41 OK Y NG Check the ignition timing Refer to GROUP 11A On vehicle Service OK Y Malfunction of the ig
209. ector resin section with the tool when removing and installing 1 Remove the engine coolant temperature sensor 2 With temperature sensing portion of engine coolant temperature sensor immersed in hot water check resistance Standard value 2 1 2 7 kQ at 20 C 0 26 0 36 kQ at 80 C 3 Ifthe resistance deviates from the standard value greatly replace the sensor 9FUCIS6 13A 194 MPI lt 6A1 gt On vehicle Service 9FU0157 lt Vehicles with TCL gt LE Throttle posti e rottle position sensor A s Equipment L iside connector OE JLA E pak aS K f IRIKA ETA 0000 h Accelerator pedal 0900 position sensor Equipment o SIR side connecto D Sa y r Ww C FT wif DN f F 6AFO365 4 Apply sealant to threaded portion Specified sealant 3M Nut Locking Part No 4171 or equivalent 5 Install the engine coolant temperature sensor and tighten it to the specified torque Tightening torque 29 Nm THROTTLE POSITION SENSOR CHECK 13100320283 1 Disconnect the throttle position sensor connector 2 Measure the resistance between the throttle position sensor side connector terminal 1 and terminal 4 Standard value 3 5 6 5 kQ 3 Measure the resistance between the throttle position sensor side connector terminal 3 and terminal 4 Normal condition Throttle valve slowly open Changes smoothly in until fully open from the idle proportion to the open
210. ee Oxygen Q C ang On Cae 6FU2706 ii 2 3 4 MB991223 7FU0830 IS VALI 6FU2707 AA lt Oxygen sensor rear gt 1 Disconnect the oxygen sensor connector and connect the special tool test harness set to the connector on the oxygen sensor side 2 Make sure that there is continuity 11 18 Q at 20 C between terminal 3 and terminal 4 on the oxygen sensor connector 3 If there is no continuity replace the oxygen sensor NOTE 1 If the MUT II does not display the standard value although no abnormality is found by the above mentioned continuity test and harness check replace the oxygen sensor rear 2 For removal and installation of the oxygen sensor refer to GROUP 15 Exhaust Pipe and Main Muffler INJECTOR CHECK 13100520287 Measurement of Resistance between Terminals 1 Remove the injector connector 2 Measure the resistance between terminals Standard value 13 16 Q at 20 C 3 Install the injector connector Checking the Injection Condition 1 Following the steps below bleed out the residual pressure within the fuel pipe line to prevent flow of the fuel Refer to P 13 88 2 Remove the injector 13A 94 MPI lt 4G6 gt On vehicle Service 3 Arrange the special tool injector test set adaptor fuel pressure regulator and clips as shown in the illustration below High pressure fuel hose MD998741 Return hose Pressu
211. efer to P 13A 62 SPECTION PROCEDURE FOR DIAGNOSIS CODE 14 OK T NG MUT II Actuator test gt Check the EGR control solenoid valve system 10 EGR conirol solenoid valve Refer to P 13A 65 Refer to P 13A 51 INSPECTION PROCEDURE 36 OK Y NG MUT II Data list __ Check the oxygen sensor rear system Refer to P 13A 24 IN 59 Oxygen sensor rear Refer to P 13A 65 SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV york NG MUT II Data list __ Check the oxygen sensor front system Refer to P 13A 13 IN 11 Oxygen sensor SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Changes between 600 1 000 mV during sudden racing JoK NG OK MUT II Data list Check the fuel pressure 1 Inspect the intake of 11 Oxygen sensor Refer to P 13A 85 air into the air intake OK Changes between 0 400 mV and 600 1 000 mV during system idling e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate e Broken air intake hose 2 Check the injector for clog 13A 58 INSPECTION PROCEDURE 45 MPI lt 4G6 gt Troubleshooting Check the engine ECU power supply and earth circuit INSPECTION PROCEDURE 46 1 N NG Measure the engine ECU connectors C 34 C 36 C 40 es
212. em Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGNOSIS CODE 41 Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the injectors for operation sound gt OK T NG Check the ignition timing Refer to GROUP 11A On vehicle Service Check that the crank angle sensor is installed properly OK Y MUT II Check if hesitation sag stumble or poor acceleration occur Refer to P 13A 56 INSPECTION PROCEDURE 43 OK Y Check the fuel pressure Refer to P 13A 85 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables Check the compression pressure Check the fuel filter or fuel line for clogging Broken air intake hose e e e e Clogged air cleaner 13A 42 INSPECTION PROCEDURE 19 Surge MPI lt 4G6 gt Troubleshooting Probable cause Defective ignition system abnormal air fuel ratio etc are suspected e Malfunction of the ignition system e Malfunction of air fuel ratio control system e Malfunction of the EGR control solenoid valve system Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGNOSIS CODE 41 Refer to GROUP 11A On
213. ensor mounting bolt and then turn the throttle position sensor clockwise as far as it will go Check that the idle position switch is ON at this position Slowly turn the throttle position sensor counterclockwise and find the point where the idle position switch turns off Securely tighten the throttle position sensor mounting bolt at this point Check the throttle position sensor output voltage Standard value 400 1 000 mV If there is a deviation from the standard value check the throttle position sensor and the related harness Remove the thickness gauge Turn the ignition switch to OFF Disconnect the MUT IL When the MUT II is not used remove the special tool and connect the throttle position sensor 13A 186 MPI lt 6A1 gt On vehicle Service Accelerator pedal _ position sensor with built in idle position switch li Thickness WA 6AF0258 lt Vehicles with auto cruise control system gt Throttle lever an 3 H Ny i f Thickness gauge hi AA OSA fit al A Sy fi THROTTLE POSITION SENSOR ADJUSTMENT lt Vehicles with TCL gt 13100110040 1 2 3 Connect the MUT II to the diagnosis connector Turn the ignition switch to ON but do not start the engine Check the throttle position sensor output voltage Standard value 580 690 mV If the voltage is outside the standard value adjust by loosening the throttle position sensor mounting bol
214. epair if necessary MPI lt 6A1 gt Troubleshooting 13A 121 Code No 54 Immobilizer system Probable cause Range of Check e Ignition switch ON Radio interference of ID codes Incorrect ID code Set Conditions Malfunction of harness or connector e Improper communication between the engine ECU and immobilizer ECU Malfunction of immobilizer ECU Malfunction of engine ECU NOTE 1 If the ignition switches are close each other when starting the engine radio interference may cause this code to be displayed 2 This code may be displayed when registering the key ID code Yes Is there another ignition key near the ignition key that is inserted Remove the extra ignition key in the ignition switch NG a Check trouble symptom No 1 Yes Is a diagnosis code output from the immobilizer ECU L e Check the immobilizer system Refer to GROUP 54 Ignition No Switch and Immobilizer System 1 NG l Check the following connectors m gt Repair C 37 C 81 C 68 OK Y Check trouble symptom NG Y OK Check the harness wire between the engine ECU and the immobiliz Replace the immobilizer ECU er ECU NG NG Y Check trouble symptom Repair jna Replace the engine ECU 13A 122 MPI lt 6A1 gt Troubleshooting Code No 59 Oxygen sensor rear system Probable cause Range of Check Malfunction
215. eplace the engine ECU repair if necessary Check the following connectors C 83 C 66 C 63 C 132 C 141 lt L H drive vehicles gt C 62 C 14 lt R H drive vehicles gt OK NG Repair Y Check trouble symptoms NG Y Check the harness wire between the battery and engine ECU con nector and repair if necessary DIESEL FUEL Troubleshooting 13E 35 INSPECTION PROCEDURE 22 Check the solenoid type spill valve relay circuit NG Check the solenoid type spill valve relay Refer to P 13E 56 Replace JoK NG Measure at solenoid type spill valve relay connector C 52 __ Check the harness wire between the control relay and solenoid type e Disconnect the connector and measure at the harness side spill valve relay connectors and repair if necessary connector e Voltage between 2 3 and earth Ignition switch ON OK System voltage yok NG Measure at the engine ECU connector C 55 __ Check the following connector e Disconnect the connector and measure at the harness side C 52 connector OK NG e Voltage between 71 and earth OK System voltage When the terminal 3 is earthed Repair y y Check the following connector ONEEK TOUDIE SYMPOMS C 55 NG OK T pne Check the harness wire between the solenoid type spill valve relay F and engine ECU connectors and repair if necessary Repair y Check trouble
216. er the diagnosis code is erased Malfunction of TCL ECU OK Measure the voltage at TCL ECU connector C 10 Check the following connector e Engine idling C 10 e Disconnect the TCL ECU connector and measure at the OK harness side Y e Between terminal 25 and body earth Check trouble symptom OK 10 V or more NG NG y Replace the TCL ECU Y NG Check the following connectors m gt Repair C 31 C 47 C 51 C 10 OK Y Check trouble symptom NG Ad NG Inspect the harness between the control relay and the TCL ECU Repair OK Y Engine control relay inspection Refer to GROUP 13A On vehicle Service 13H 10 TCL Troubleshooting Code No 31 Front right wheel speed sensor circuitsystem Probable cause Code No 32 Front left wheel speed sensor circuit system These diagnosis codes are output if a pulse from the front wheels indicates that Malfunction of front wheel speed sensor the difference between the front wheels and the rear wheels is 8km h or more because Malfunction of harness or connector of an open or short circuit in a wheel speed sensor or a malfunction of sensor Malfunction of TCL ECU Malfunction of ABS ECU NOTE When these diagnosis codes are output erase the diagnosis code memory after carrying out repairs and then carry out a road test at 20 km h or more and check to be sure that the diagnosis codes are not output again
217. er and the MUT II Identical Pump op eration sen sor high speed Engine Idling Compare the engine speeds displayed on the tachometer and MUT I The same engine speed is displayed Code No 18 19 Pump op eration sen sor low speed Engine Idling Compare the engine speeds displayed on the tachometer and the MUT II The same engine speed is displayed Code No 18 19 Accelerator pedal posi tion sensor Ignition switch ON Accelerator pedal is released 480 570 mV Accelerator pedal is fully depressed 4000 4690 mV Accelerator pedal posi tion sensor Accelerator opening angle Ignition switch ON Throttle lever Idle position 0 Throttle lever Fully open position Battery voltage Ignition switch ON System voltage Solenoid type spill valve Engine After having warmed up Engine Idling 51 5 66 5 deg A C switch OFF gt ON Advances slightly Timing con trol solenoid valve duty ratio Engine After having warmed up When engine is suddenly decelerated from 3 000 r min Momen tarily in creases slightly 13E 40 Item No Inspection item DIESEL FUEL Troubleshooting Inspection contents Normal condition Inspection procedure No Reference page EGR com mand value Engine Idle 44 8 Engine After having warmed up When e
218. er to P 13A 193 p JOK NG Measure at the control relay connector C 31 e Disconnect the connector and measure at the harness side e Voltage between 3 4 and earth OK System voltage i JoK Check the engine ECU power supply and earth circuit Refer to P 13A 158 INSPECTION PROCEDURE 46 Malfunction of the ignition switch Malfunction of the control relay Improper connector contact short circuited harness wire Disconnected engine ECU earth wire Malfunction of the engine ECU open circuit or Replace NG Check the following Repair connector B 30 OK AA Check trouble symptom NG AA Check the harness wire between battery and control relay connector and repair if necessary 13A 146 INSPECTION PROCEDURE 27 Fuel pump system MPI lt 6A1 gt Troubleshooting Probable cause The engine ECU turns the control relay ON when the engine is cranking or running and this supplies power to drive the fuel pump Malfunction of the fuel pump relay Malfunction of the fuel pump Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or Check the fuel pump circuit Refer to P 13A 158 INSPECTION PROCEDURE 47 Measure at the fuel pump relay connector C 32 e Connect the connector e Voltage between 1 and earth e MUT II Actuator test Fuel pump drive
219. ery for 10 seconds or more and then reconnect it and run the engine at idle for about 10 minutes D Z ooN Ttotte position sensor with IDLE POSITION SWITCH AND THROTTLE built in idle position switch POSITION SENSOR ADJUSTMENT 13100130268 1 Connect the MUT II to the diagnosis connector 6FU2692 13A 82 MPI lt 4G6 gt On vehicle Service lt Vehicles without auto cruise 2 Throttle lever Thickness 3 anne gauge 6FU2T10 7 6FU2694 10 11 Insert a thickness gauge as follows lt Vehicles without auto cruise control system gt Insert a thickness gauge with a thickness of 0 45 mm between the fixed SAS and the throttle lever lt Vehicles with auto cruise control system gt Insert a 1 4 mm thick thickness gauge up to approx 3 mm between the levers shown in the figure NOTE Do not insert the thickness gauge 3 mm or more If doing that the throttle lever opening angle becomes larger than the predetermined angle causing maladjustment Turn the ignition switch to ON but do not start the engine Loosen the throttle position sensor mounting bolt and then turn the throttle position sensor anti clockwise as far as it will go Check that the idle position switch is ON at this position Slowly turn the throttle position sensor clockwise and find the point where the idle position switch turns off Securely tighten the throttle position sensor mounting bolt at this point
220. es displayed CODES No Y NG MUT II Data list __ Check the idle position switch system 26 Idle position switch Refer to P 13A 164 Refer to P 18A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt OK Refer to P 18A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt 1 NG MUT II Data list __ Check the throttle position sensor system Refer to P 13A 114 14 Throttle position sensor Refer to P 13A 163 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 14 OK y Yes MUT II Data list __ Check the vehicle speed sensor system Refer to P 13A 119 IN 45 ISC servo position SPECTION PROCEDURE FOR DIAGNOSIS CODE 25 e Is the idle speed control ISC servo position drops to 0 2 steps when decelerating engine r min less than 1 000 No M NG MUT II Actuator test Check the EGR control solenoid valve system Refer to P 13A 152 10 EGR control solenoid valve Refer to P 13A 167 INSPECTION PROCEDURE 37 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Clean the throttle valve area e Check and adjust the fixed SAS 13A 140 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 15 Hesitation sag or stumble Probable cause In cases such as the above the cause is probably that ignition system air fuel mixture Malfunction of the ignition system or compression pressure is defective Malfunction of air fuel ratio control system Malfunction of the fuel supply system Malf
221. etic resistive element type Inhibitor switch Contact switch type Top dead centre sensor Hall element type Crank angle sensor Hall element type Detonation sensor Piezoelectric type Power steering fluid pressure switch Contact switch type 13A 104 MPI lt 6A1 gt General Information Items Specifications Actuators Control relay type Contact switch type Fuel pump relay type Contact switch type Injector type and number Electromagnetic type 6 Injector identification mark CDH210 EGR control solenoid valve Duty cycle type solenoid valve Purge control solenoid valve ON OFF type solenoid valve Ventilation control solenoid valve Duty cycle type solenoid valve Vacuum control solenoid valve Duty cycle type solenoid valve Fuel pressure regulator Regulator pressure kPa 329 MPI lt 6A1 gt General Information 13A 105 MULTIPOINT FUEL INJECTION SYSTEM DIAGRAM 4 2 3 4 5 Oxygen sensor front Air flow sensor Intake air temperature sensor Throttle position sensor Idle position switch Top dead centre sensor Crank angle sensor Engine coolant temperature sensor Barometric pressure sensor 10 Oxygen sensor rear 7 Power supply voltage Vehicle speed sensor A C switch 1 2 Inhibitor switch Power steering fluid pressure switch Ignition switch ST Ignition switch IG Alternato
222. f the idling speed is higher than the standard value range even when the SAS is fully closed check whether or not there is any indication that the fixed SAS has been moved If there is an indication that it has been moved adjust the fixed SAS Press the MUT II clear key and release the ISC servo from the Actuator test mode NOTE Unless the ISC servo is released the Actuator test mode will continue 27 minutes Switch OFF the ignition switch Disconnect the MUT II Start the engine again and let it run at idle speed for about 10 minutes check that the idling condition is normal MPI lt 4G6 gt On vehicle Service Al RRQ KS Fuel high Ht sea a f A 6FU2697 ig Fuel pressure pressure gauge hose O ring or gasket Hs MD998709 MD998742 Z s Bo Ge See Delivery pipe IFUNI98 Fuel pump mene connector A FUEL PRESSURE TEST 1 2 13A 85 13100190303 Release residual pressure from the fuel pipe line to prevent fuel gush out Refer to P 13A 88 Disconnect the fuel high pressure hose at the delivery pipe side Caution Cover the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line Remove the union joint and bolt from the special tool adapter hose MD998709 and instead attach the special tool hose adapter MD998742 to the adapter hose Install a fuel pressure gauge on the adapter hose that was set up i
223. function of the stepper motor or of the engine control unit Checking the Coil Resistance 1 Disconnect the idle speed control servo connector and connect the special tool test harness Measure the resistance between terminal 2 white clip of the special tool and either terminal 1 red clip or terminal 3 blue clip of the connector at the idle speed control servo side Standard value 28 33 Q at 20 C Measure the resistance between terminal 5 green clip of the special tool and either terminal 6 yellow clip or terminal 4 black clip of the connector at the idle speed control servo side Standard value 28 33 Q at 20 C 13A 200 MD998463 MPI lt 6A1 gt On vehicle Service 7FU0295 7FU0294 Operation Check 1 Remove the throttle body 2 Remove the stepper motor Connect the special tool test harness to the idle speed control servo connector Connect the positive terminal of a power supply approx 6 V to the white clip and the green clip With the idle speed control servo as shown in the illustration connect the negative terminal of the power supply to each clip as described in the following steps and check whether or not a vibrating feeling a feeling of very slight vibration of the stepper motor is generated as a result of the activation of the stepper motor 1 Connect the negative terminal of the power supply to the red and black clip 2 Connect the
224. g Carries out control as if the correction resistance are at specified values and injection rate 13E 8 DIESEL FUEL Troubleshooting INSPECTION CHART FOR DIAGNOSIS CODES 43300400044 Caution Check that the engine ECU earth circuit is normal before checking for the cause of the problem Code No Diagnosis item Reference page 11 Accelerator pedal position sensor system 13E 9 12 Boost sensor system 13E 10 13 Barometric pressure sensor system 13E 11 14 Diesel fuel temperature sensor system 13E 11 15 Engine coolant temperature sensor system 13E 12 16 Intake air temperature sensor system 13E 12 17 Vehicle speed sensor system 13E 13 18 Pump operation sensor system open circuit 13E 14 19 Pump operation sensor system intermittent fault 13E 14 21 Crank angle sensor system 13E 15 22 Ignition switch ST signal system 13E 16 23 Idle position switch 1 system 13E 16 24 Idle position switch 2 system 13E 17 41 Throttle solenoid valve system 13E 18 43 Timing control solenoid valve system 13E 19 44 Solenoid type spill valve system 13E 20 45 Injection timing correction resistor system 13E 21 46 Injection rare correction resistor system 13E 21 47 Immobilizer system 13E 22 DIESEL FUEL Troubleshooting 13E 9 INSPECTION PROCEDURE FOR DIAGNOSIS CODES Code No 11 Accelerator pedal position sensor system Probable cause Range of Check Set Co
225. g based on this input Improper connector contact open circuit or The inhibitor switch inputs the condition of the select lever i e whether it is in short circuited harness wire P or N range or in some other range to the engine ECU Malfunction of the engine ECU The engine ECU controls the idle speed control ISC servo based on this input NG Check the inhibitor switch m gt Replace Refer to GROUP 23A On vehicle Service K 1 NG NG Measure at the inhibitor switch connector B 72 gt Check harness wire be Repair e Disconnect the connector and measure at the harness side tween engine ECU and 1 Voltage between 10 and earth Ignition switch ON inhibitor switch connector OK System voltage 2 NG 2 Continuity between 9 and earth joK OK Continuity 3 Voltage between 10 and earth e Ignition switch START e Disconnect engine ECU connector _ _ OK System voltage 3 NG Check harness wire between inhibitor switch connector and starter Replace the engine ECU OK S terminal and repair if necessary Y NG Check the following Repair NG i connector B 72 Check the following Repair connector ie C 92 Check trouble symptom a wo NG Check trouble symptom Check harness wire be gt Repair NG tween engine ECU
226. ge JoK NG Measure at the engine ECU connector C 53 e Disconnect the connector and measure at the harness side connector e Voltage between 3 and earth Ignition switch ON OK System voltage OK Y Check the following connector C 53 OK Ne Repair Y Check trouble symptom NG Y NG MUT II Actuator test o 01 Solenoid type spill valve OK Sound of operation can be heard joK Replace the engine ECU Check the harness wire between the solenoid type spill valve relay and the solenoid type spill valve connector and repair if necessary Check the following connector B 61 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the solenoid type spill valve connector and repair if necessary Replace the injection pump DIESEL FUEL Troubleshooting Code No 45 Injection timing correction resistor system 13E 21 Probable cause Range of Check Set Conditions e Open or short circuit is detected in injection timing correction resistor circuit Malfunction of the injection timing correction resistor Open or short circuit in injection timing correction resistor circuit of poor connector contact NG Check the injection timing correction resistor Refer to P 13E 60 JoK NG Measure at the injection timing correction resistor connector B 60 e Disconnect the connector and measu
227. ger switch OFF to ON Brake lamp ON Voltage drops by 0 2 3 5 V Engine warning lamp Ignition switch OFF gt ON 0 3V 9 13V After several seconds have elapsed Power steering fluid pressure switch Engine Idling after warming up When steering wheel is stationary System voltage When steering wheel is turned 0 3V Control relay Power supply Ignition switch OFF System voltage Ignition switch ON 0 3V A C switch 1 Turn the A C switch OFF Engine Idle speed 0 3V Turn the A C switch ON A C compressor is operating System voltage Tachometer signal Engine r min 3 000 r min 0 3 3 0V Oxygen sensor heater Engine Idling after warming up 0 3V Engine r min 5 000r min System voltage Ignition switch ST Engine Cranking 8V or more Terminal No Check item MPI lt 4G6 gt Troubleshooting Check condition Engine condition 13A 69 Normal condition 72 Intake air temperature sensor When intake air temperature is 0 C Ignition switch ON 3 2 3 8V When intake air temperature is 20 C When intake air temperature is 40 C When intake air temperature is 80 C Oxygen sensor rear Transmission 2nd gear lt M T gt L range lt A T gt Engine r min 3 500 r min or more Driving with the throttle valve widely open Oxygen sensor front
228. gers to feel the pulse of the fuel being recirculated Pulse is felt Listen near the fuel tank for the sound of fuel pump operation Sound of opera tion is heard Procedure No 27 13A 146 Purge control solenoid valve Solenoid valve turns from OFF to ON Ignition switch ON Sound of opera tion can be heard when solenoid valve is driven Procedure No 36 13A 151 EGR control solenoid valve Solenoid valve turns from OFF to ON Ignition switch Sound of opera tion can be heard when solenoid valve is driven Procedure No 37 13A 152 Vacuum control solenoid valve lt Vehicles with TCL gt Solenoid valve turns from OFF to ON Ignition switch Sound of opera tion can be heard when solenoid valve is driven 13A 124 Ventilation control solenoid valve lt Vehicles with TCL gt Solenoid valve turns from OFF to ON Ignition switch Sound of opera tion can be heard when solenoid valve is driven Code No 72 13A 125 Basic igni tion timing Set to ignition timing adjust ment mode Engine Idling Timing light is set 5 BTDC Fan con troller Drive the fan motor e Ignition switch ON Radiator fan and condenser fan rotate at high speed Procedure No 25 13A 145 13A 168 MPI lt 6A1 gt Troubleshooting Needle nosed wire probe 7FUI264 CHECK AT THE ENGINE E
229. gnition System WACO O e Power transistor control signal Measurement Method ti 1 Disconnect the distributor connector and connect the pickup special tool test harness MB991348 in between All terminals should be connected 2 Connect the analyzer special patterns pickup to distributor 1FUL166 connector terminal 3 Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 10 Analyzer Standard Wave Pattern Observation condition Function Special patterns Pattern height Low Pattern selector Display Engine r min Approx 1 200 r min Standard wave pattern la T T Revolution time corresponding to a crank angle of 180 Crank angle Compression sensor output top dead centre y wave pattern T gi Power transistor Point control signal 6 Wave build up section 0 wave pattern a 6 Spark advance angle Dwell section B Time 6AF0357 MPI lt 6A1 gt Troubleshooting 13A 183 Wave Pattern Observation Points Point Condition of wave pattern build up section and maximum voltage Refer to abnormal wave pattern examples 1 and 2 Condition of wave pattern build up section and maximum voltage Probable cause Rises from approx 2V to approx 4 5V at the top right Normal 2V rectangular wave Open circuit in ignition primary circuit Rectangular wave at power voltage P
230. he com bination meter and the TCL ECU and repair if necessary TCL Troubleshooting 13H 19 Inspection Procedure 5 TCL OFF indicator lamp remains illuminated even Probable cause after the engine is started TCL OFF indicator lamp flashes after the engine is started The TCL OFF indicator is also used as a system warning indicator If there is a system Other system related to the TCL abnormality this indicator will illuminate or flash e Malfunction of harness or connector No Is the diagnosis code normal To trouble symptom inspection proce Is communication with the MUT II pos dure 1 sible Refer to P 13H 16 Yes Yes Does the TCL OFF indicator lamp switch Replace the TCL ECU off when TCL ECU connector C 11 is disconnected No y OK NG Check the following connectors Check trouble symptom Check the harness between the com D 03 C 50 C 11 bination meter and the TCL ECU and NG repair if necessary Y Repair Inspection Procedure 6 TCL indicator lamp remains illuminated even after the Probable cause engine is started The TCL indicator lamp only illuminates while the engine is running if the TCL is Malfunction of TCL indicator power supply circuit operating e Malfunction of TCL ECU e Malfunction of harness or connector No Does the TCL indicator remain illumi
231. he hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line 17 Replace the O ring at the end of the fuel high pressure hose with a new one Furthermore apply engine oil to the new O ring before replacement 18 Fit the fuel high pressure hose over the delivery pipe and tighten the bolt to specified torque 19 Check for fuel leaks 1 Apply the battery voltage to the fuel pump drive terminal to drive the fuel pump 2 Under fuel pressure check the fuel line for leaks FUEL PUMP CONNECTOR DISCONNECTION HOW TO REDUCE THE FUEL PRESSURE 13100090269 Refer to P 13A 88 FUEL PUMP OPERATION CHECK 43100200242 Refer to P 13A 88 13A 192 MPI lt 6A1 gt On vehicle Service COMPONENT LOCATION Name Name A C relay Fuel pump check terminal A C switch Idle speed control servo Accelerator pedal position sensor with idle position switch lt Vehicles with TCL gt Inhibitor switch lt A T gt Air flow sensor with intake air temperature sensor and barometric pressure sensor Injectors Control relay and fuel pump relay Oxygen sensor front Crank angle sensor Oxygen sensor rear Detonation sensor lt Vehicles for Hong Kong and Singapore gt Power steering fluid pressure switch Diagnosis connector Purge control solenoid valve Distributor with top dead centre sensor and ignition coil Throttle positi
232. heck the harness wire between combination meter and engine e Disconnect the connector and measure at the harness side ECU connector and repair if necessary e Disconnect the engine ECU connector e Continuity between 16 and earth OK No continuity JOK Replace the engine ECU MPI lt 4G6 gt Troubleshooting 13A 31 INSPECTION PROCEDURE 5 No initial combustion starting impossible Probable cause In cases such as the above the cause is probably that a spark plug is defective Malfunction of the ignition system or that the supply of fuel to the combustion chamber is defective Malfunction of the fuel pump system In addition foreign materials water kerosene etc may be mixed with the fuel Malfunction of the injectors Malfunction of the engine ECU Malfunction of the immobilizer system Foreign materials in fuel NG Check battery voltage when cranking Check the battery Refer to GROUP 54 Battery OK 8 V or higher OK Y Yes Is immobilizer ECU diagnosis code displayed __ Check the immobilizer No Refer to GROUP 54 Ignition Key and Immobilizer Y MUT II Inspection of no initial combustion Refer to P 13A 52 INSPECTION PROCEDURE 37 OK Y NG Can any sound be heard from the injectors when cranking __ Check the injector system Refer to P 13A 21 INSPECTION PRO OK CEDURE FOR DIAGNOSIS CODE 41 Y Ignition system
233. ic pressure sensor Refer to P 13A 164 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 OK Y NG MUT II Data list __ Check the engine coolant temperature sensor system 21 Engine coolant temperature sensor Refer to P 13A 163 Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 OK Y NG MUT II Data list __ Check the throttle position sensor system Refer to P 13A 114 14 Throttle position sensor Refer to P 13A 163 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 14 OK Y NG MUT II Actuator test Check the EGR control solenoid valve system 10 EGR control solenoid valve Refer to P 13A 167 Refer to P 13A 152 INSPECTION PROCEDURE 37 OK Y NG MUT II Data list __ Check the oxygen sensor rear system Refer to P 13A 122 IN 59 Oxygen sensor rear Refer to P 13A 166 SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 e Transmission 2nd gear lt M T gt L range lt A T gt e Driving with throttle widely open OK 600 1 000 mV yok NG MUT II Data list __ Check the oxygen sensor front system Refer to P 13A 112 IN 11 Oxygen sensor front SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Changes between 600 1 000 mV during sudden racing jok NG OK MUT II Data list Check the fuel pressure 1 Inspect the intake of 11 Oxygen sensor front Refer to P 13A 189 air into the air intake OK Changes between 0 400 mV and 600 1 000 mV during system idling e Broken intake manifold gasket e Bro
234. ically controlled fuel injection system the engine warning lamp will illuminate If the lamp remains illuminated or if the lamp illuminates while D5 the engine is running check the diagnosis code output Engine warning lamp 6FU2688 Engine warning lamp inspection items Accelerator pedal position sensor Boost sensor Barometric pressure sensor Diesel fuel temperature sensor Engine coolant temperature sensor Intake air temperature sensor Pump operation sensor Crank angle sensor Idle position switch 1 Idle position switch 2 Throttle solenoid valve system Timing control solenoid valve system Solenoid type spill valve system Immobilizer system Engine ECU DIESEL FUEL Troubleshooting 13E 7 METHOD OF READING AND ERASING DIAGNOSIS CODES Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points INSPECTION USING MUT II DATA LIST AND ACTUATOR TESTING 1 Carry out inspection by means of the data list and the actuator test function If there is an abnormality check and repair the chassis harnesses and componenis 2 After repairing re check using the MUT II and check that the abnormal input and output have returned to normal as a result of the repairs 3 Erase the diagnosis code memory 4 Remove the MUT II 5 Start the engine again and carry out a road test to confirm that the problem has disappeared FAIL SAFE BACKUP FUN
235. id valve is controlled by the negative pressure resulting from EGR operation leaking to port A of the throttle body NG Check the EGR control solenoid valve Refer to GROUP 17 Emission Control System Malfunction of solenoid valve Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or Replace JoK NG Measure at the EGR control solenoid valve connector B 06 e Disconnect the connector and measure at the harness side e Voltage between 1 and earth Ignition switch ON OK System voltage e ox NG Measure at the engine ECU connector C 33 e Disconnect the connector and measure at the harness side e Voltage between 6 and earth Ignition switch ON OK System voltage OK Y NG f Check the following Repair connector C 33 OK AA Check trouble symptom NG Y Replace the engine ECU INSPECTION PROCEDURE 38 MUT II Inspection of no initial combustion Check the harness wire between control relay and solenoid valve connector and repair if necessary NG Check the following connector B 06 m Repair OK Check trouble symptom NG Y Check the harness wire between engine ECU and solenoid valve connector and repair if necessary NG MUT II Data list m 16 Voltage of engine EC
236. idling speed 13E 28 Idling speed is low Improper idling speed 13E 28 Idling speed is unstable Rough idling hunting 13E 29 Idling stability Engine stalls Engine stops soon after starting 13E 29 Engine stops during idling 13E 30 Driving Engine output is too low 13E 30 Abnormal engine knocking occurs 13E 31 Abnormally black smoke 13E 31 Abnormally white smoke 13E 32 Hunting occurs while driving 13E 32 Idling speed is improper when A C is operating 13E 33 Fans radiator fan and A C condenser fan are imoperative 13E 33 13E 24 DIESEL FUEL Troubleshooting INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS INSPECTION PROCEDURE 1 Communication with MUT II is impossible MUT II Probable cause communication with all systems is impossible The cause is probably a defect in the power supply system including earth for the Malfunction of the connector diagnosis line e Malfunction of the harness wire NG NG Measure at the diagnosis connector Check the following connectors gt Repair C 20 C 66 C 63 C 132 C 141 lt L H drive e Voltage between 16 and earth vehicles gt C 62 C 14 lt R H drive ve OK System voltage hicles gt OK OK NG Check trouble symptom Check the harness wire between the power supply and the diagnosis connec NG tor and
237. idling stable after the warming up e Yes Y NG Check the ISC servo for operation sound Refer to P 13A 199 OK M NG Check the injector for operation sound gt OK Y NG MUT II Data list e 26 Idle position switch Refer to P 13A 164 OK Y NG MUT II Data list m 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Actuator test 10 EGR control solenoid valve Refer to P 13A 167 OK y Check the fuel pressure Refer to P 13A 189 OK Y NG Check the ignition timing r Refer to GROUP 11B On vehicle Service OK Y After warming up let the engine run at idling for 10 minutes Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Clean the throttle valve area Refer to P 13A 184 Check and adjust the fixed SAS Refer to P 13A 187 Check if the unstable idling Rough idling hunting Refer to P 13A 134 INSPECTION PROCEDURE 8 Check the ISC servo system Refer to P 13A 151 INSPECTION PROCEDURE 35 Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Check the idle position switch system Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO
238. ieseling Probable cause Fuel leakage from injectors is suspected e Fuel leakage from injectors Check the injectors for fuel leakage MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 22 Too high CO and HC concentration when idling 13A 43 Probable cause Abnormal air fuel ratio is suspected e Malfunction of the air fuel ratio control system Yes MUT II Self Diag code Are diagnosis codes displayed No y NG Check the ignition timing Refer to GROUP 11A On vehicle Service OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 62 OK Y NG MUT II Data list 13 Intake air temperature sensor Refer to P 13A 62 Ie MUT II Data list 25 Barometric pressure sensor Refer to P 13A 63 NG JoK NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 65 e Transmission 2nd gear lt M T gt L range lt A T gt NG e Driving with throttle widely open OK 600 1 000 mV jok MUT II Data list 11 Oxygen sensor OK 600 1 000 mV when racing suddenly Refer to P 13A 61 JoK OK MUT II Data list 11 Oxygen sensor OK Repeat 0 400 mV and 600 1 000 mV alternately when idling Refer to P 13A 61 NG Y Check the fuel pressure Refer to P 13A 85 OK Y e Deteriorated catalyst Refer to P 13A 12 INSPECTION CHART
239. if foreign materials water alcohol etc got into fuel MPI lt 6A1 gt Troubleshooting 13A 133 INSPECTION PROCEDURE 7 In takes too long time to start Incorrect starting Probable cause In cases such as the above the cause is probably that the spark is weak and ignition Malfunction of the ignition system is difficult the initial mixture for starting is not appropriate or sufficient compression Malfunction of the injector system pressure is not being obtained Inappropriate gasoline use Poor compression NG Check battery voltage when cranking Check the battery Refer to GROUP 54 Battery OK 8 V or higher OK Y MUT II Check if uncomplete combustion occurs Refer to P 13A 153 INSPECTION PROCEDURE 40 OK M NG Can any sound be heard from the injectors when cranking e Check the injector system Refer to P 13A 120 INSPECTION OK PROCEDURE FOR DIAGNOSIS CODE 41 Y NG Check the ignition timing when cranking Check that the crank angle sensor is installed properly OK Approx 5 BTDC OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if the injectors are clogged e Check the compression pressure e Check if foreign materials water alcohol etc got into fuel 13A 134 INSPECTION PROCEDURE 8 Unstable idling Rough idling hunting MPI lt 6A1 gt Troubleshooting
240. il spark plugs spark plug cables e Check for occurrence of ignition leak MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 17 The feeling of impact or vibration when decelerating 13A 41 Probable cause Malfunction of the ISC system is suspected e Malfunction of the ISC system Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the ISC servo for operation sound Refer to P 13A 95 OK M NG MUT II Data list e 14 Throttle position sensor Refer to P 13A 62 OK Y NG MUT II Data list e 26 Idle position switch Refer to P 13A 63 OK Y Clean the throttle valve area Refer to P 13A 81 INSPECTION PROCEDURE 18 Poor acceleration Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the ISC servo system Refer to P 13A 50 INSPECTION PROCEDURE 34 Check the throttle position sensor system Refer to P 13A 15 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 14 Check the idle position switch system Refer to P 13A 46 INSPECTION PROCEDURE 28 Probable cause Defective ignition system abnormal air fuel ratio poor compression pressure etc are suspected Malfunction of the ignition system Malfunction of air fuel ratio control system Malfunction of the fuel supply system Poor compression pressure Clogged exhaust syst
241. in creases Fan controller When radiator fan and A C condenser fan are not operating 0 0 3V When radiator fan and A C condenser fan are operating 0 7 V or more Idle position switch 2 Ignition switch ON Accelerator pedal is released 0 1V Accelerator pedal is slightly depressed 4 V or higher Terminal No DIESEL FUEL Troubleshooting Check item Check condition Engine condition 13E 45 Normal condition 21 Vehicle speed sensor e Ignition switch ON e Vehicle is moving forward slowly 05V Varies repeatedly 25 Ignition switch IG Ignition switch ON 11 13V 31 A C switch 2 e Engine Idling e Outside air tem perature 25 C or more When A C is MAX COOL condition When the load by A C is high 0 3V When A C is MAX HOT condition When the load by A C is low System voltage Fuel injection rate correction resistor Ignition switch ON 0 2 45V Diesel fuel tempera ture sensor Ignition switch ON when cranking at cold engine 0 5 3 4 V Engine coolant temperature sensor Ignition switch ON Engine coolant tempera ture is 0 C 3 2 3 8 V Engine coolant tempera ture is 20 C 2 3 2 9 V Engine coolant tempera ture is 40 C 1 3 1 9 V Engine coolant tempera ture is 80 C 0 3 0 9 V Intake air tempera ture sensor Ignition switch ON Intak
242. ing position angle of the throttle valve 4 If the resistance is outside the standard value or if it doesn t change smoothly replace the throttle position sensor NOTE For the throttle position sensor adjustment procedure refer to P 13A 184 lt Vehicles without TCL gt P 13A 186 lt Vehicles with TCL gt ACCELERATOR PEDAL POSITION SENSOR CHECK lt Vehicles with TCL gt 13100340012 1 Disconnect the accelerator pedal position sensor connector 2 Measure the resistance between the accelerator pedal position sensor side connector terminal 1 and terminal 4 Standard value 3 5 6 5 kQ 3 Measure the resistance between the accelerator pedal position sensor side connector terminal 1 and terminal 2 Normal condition Throttle valve slowly open Changes smoothly in until fully open from the idle proportion to the opening position angle of the throttle valve MPI lt 6A1 gt On vehicle Service Seay za IKAI en A i Al Accelerator pedal T position sensor Equipment side connector 13A 195 4 If the resistance is outside the standard value or if it doesn t change smoothly replace the accelerator pedal position sensor NOTE For the accelerator pedal position sensor adjustment procedure refer to P 13A 186 IDLE POSITION SWITCH CHECK lt Vehicles without TCL gt 13100330279 1 Disconnect the throttle position sensor connector 2 Check the continuity between the throttle position
243. inside the engine ECU ON and OFF Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU 1 NG NG Measure at the ignition coil connectors B 01 B 11 gt Check the following _____ Repair e Disconnect the connector and measure at the harness side connectors C 92 C 131 1 Voltage between 1 and earth Ignition switch ON OK OK System voltage 2 NG y 2 Continuity between 2 and earth Check trouble symptom OK Continuity NG Check the harness wire Repair between ignition coil and ignition switch connector JoK Check the ignition switch y NG Refer to GROUP 54 Ignition Switch and Immobilizer System Check the following gt Repair connectors B 01 B 11 OK __ Check the harness wire between power transistor unit connector and earth and repair if necessary Y NG Check trouble symptom __ Check ignition coil and power transistor unit system Refer to P 13A 22 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 44 INSPECTION PROCEDURE 34 Idle speed control ISC servo Stepper motor system Probable cause The engine ECU controls the intake air volume during idling by opening and closing Malfunction of ISC servo the servo valve located in the bypass air passage Improper connector contact open circuit or short circuited harness wire
244. ion switch Ignition switch ON Check by operating accelerator pedal repeatedly Throttle valve Set to idle position ON Throttle valve Slightly open Procedure No 28 lt Vehicles without TCL gt Procedure No 29 lt Vehicles with TCL gt 13A 146 lt Vehicles without TCL gt 13A 147 lt Vehicles with TCL gt Power steering fluid pres sure switch Engine Idling Steering wheel stationary Steering wheel turning Procedure No 32 13A 149 A C switch Engine Idling when A C switch is ON A C compressor should be operating A C switch OFF A C switch ON ON Procedure No 33 13A 149 Inhibitor switch lt A T gt Ignition switch ON PorN PorN D 2 LorR D 2 LorR Procedure No 31 13A 148 Inspection item MPI lt 6A1 gt Troubleshooting Inspection contents Normal condition Inspection procedure No 13A 165 Reference page Air flow sensor reset sig nal Engine After having warmed up Engine is idling ON 2 000 r min OFF Code No 12 13A 113 Volumetric efficiency Engine coolant temperature 80 95 C Lights power cooling fan and all accessories OFF Transmission Neutral A T P range Engine is idling 15 35 2 000 r min 15 35 Engine is suddenly raced Volumetric effi ciency increases in response to racing Crank angle sen
245. ions e idle position switch 2 off signal is input for 1 second or more NG Check the idle position switch 2 Refer to P 13E 58 m gt Replace JoK 2 Measure at the idle position switch 2 connector B 47 lt L H drive _ vehicles gt B 48 lt R H drive vehicles gt e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON OK 4 V or higher OK Y Check the following connector B 47 OK NG Repair Y Check trouble symptom NG Y Replace the engine ECU Check the following connector C 53 OK Ne Repair AA Check trouble symptom NG Y Check the harness wire between the engine ECU and the idle position switch 2 connector OK Na Repair Y Replace the engine ECU 13E 18 Code No 41 Throttle solenoid valve system DIESEL FUEL Troubleshooting Probable cause Range of Check From the following condition the ignition switch is turned to OFF e 2 2 seconds or more have passed since idle position switch turned on and ignition switch ST turned off e Accelerator pedal opening amount Approx 0 e Vehicle speed 0 km h e Injection pump speed Between 700 r min and 1 500 r min Set Conditions e The difference between the boost sensor signal output before and after the engine stops is 50 mmHg or less for 10 times in s
246. ions in the engine speed engine operating conditions The ignition timing is determined by the engine ECU from the engine speed intake air volume engine coolant temperature and atmospheric pressure code corresponding to the abnormality is output e The RAM data inside the engine ECU that is related to the sensors and actuators can be read by means of the MUT II In addition the actuators can be force driven under certain circumstances MPI lt 4G6 gt General Information OTHER CONTROL FUNCTIONS 1 Fuel Pump Control Turns the fuel pump relay ON so that current is supplied to the fuel pump while the engine is cranking or running 2 A C Relay Control Turns the compressor clutch of the A C ON and OFF 3 Fan Relay Control The revolutions of the radiator fan and GENERAL SPECIFICATIONS Items 13A 5 condenser fan are controlled in response to the engine coolant temperature and vehicle speed 4 Purge Control Solenoid Valve Control Refer to GROUP 17 5 EGR Control Solenoid Valve Control Refer to GROUP 17 Specifications Throttle body Throttle bore mm 54 Throttle position sensor Variable resistor type Idle speed control servo Stepper motor type Stepper motor type by pass air control system with the air volume limiter Idle position switch Rotary contact type within throttle position sensor Engine ECU Identification model No E2T67673 Sensors Air flow sensor
247. ircuit in harness between alternator G terminal and engine ECU Malfunction of engine ECU NG NG Measure at the alternator connector Measure at the alternator connector Check the harness wire between the side B 38 B 38 alternator and the engine ECU connec e Connect the connector e Disconnect the connector and tor and repair if necessary Test harness MB991519 measure at the harness side e Voltage between 1 black clip and e Disconnect the engine ECU con earth nector Engine at idle e Continuity between 1 and earth Radiator fan does not run OK No continuity Headlamp OFF ON OK Brake lamp OFF ON NG OFF a Sova Check the harness wire between the gt _ Repair OK Voltages rises oe and the engine ECU connec by 0 2 3 5 V K JoK Replace the engine ECU Check the alternator Refer to GROUP 16 Charging System INSPECTION PROCEDURE 24 Idling speed is improper when A C is operating Probable cause If the engine ECU detects that the air conditioner is on it activates the idle Malfunction of the A C control system speed control ISC servo to control idle up operation Improper connector contact open circuit or The A C ECU judges if the load caused by air conditioner operation is high or short circuited harness wire low and converts it to voltage signal high or low voltage and inputs the signal Malfunction of the engine ECU
248. ire NG Check the following connectors C 66 C 63 C 132 C 141 lt L H gt C 62 C 14 lt R H gt OK JoK NG Repair Check trouble symptom NG Check the harness wire between the power supply and diagnostic connector 16 pin and repair if necessary Measure at the diagnostic connector 16 pin C 20 e Continuity between 4 and earth e Continuity between 5 and earth OK Continuity __ _ Check the harness wire between the diagnostic connector 16 pin and earth and repair if necessary oK Replace the MUT II MPI lt 4G6 gt Troubleshooting 13A 29 INSPECTION PROCEDURE 2 MUT II communication with engine ECU is impossible Probable cause One of the following causes may be suspected Malfunction of engine ECU power supply circuit e No power supply to engine ECU Malfunction of engine ECU e Defective earth circuit of engine ECU Malfunction of immobilizer ECU e Defective engine ECU Open circuit between immobilizer ECU and diagnosis e Improper communication line between engine ECU and MUT II connector Open circuit between engine ECU and immobilizer ECU No Is communication possible between the MUT II and the immobilizer Check the diagnosis line between the immobilizer ECU and the ECU MUT II and repair if necessary
249. is 50 100 mV higher than the voltage at the idle position If the throttle position switch turns back on after the throttle position sensor voltage has risen by 100 mV and the throttle valve has opened the idle position switch and the throttle position sensor need to be adjusted 3 The injector drive time represents the time when the cranking speed is at 250 r min or below when the power supply voltage is 11 V 4 In a new vehicle driven approximately 500 km or less the injector drive time is sometimes 10 longer than the standard time 5 In a new vehicle driven approximately 500 km or less the step of the stepper motor is sometimes 30 steps greater than the standard value Inspection item Inspection contents Normal condition Inspection procedure No Reference page Oxygen sensor front Engine After having warmed up Air fuel mixture is made leaner when de celerating and is made richer when racing When at 4 000 r min engine is suddenly decelerated 200 mV or less When engine is suddenly raced 600 1 000 mV Engine After having warmed up The oxygen sensor signal is used to check the air fuel mixture ratio and control condition is also checked by the ECU Engine is idling 2 500 r min 400 mV or less Changes 600 1 000 mV Code No 11 13A 13 Air flow sensor e Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OF
250. is diagnosis code is output if the ABS ECU detects the system abnormality when Malfunction of harness or connector ABS warning lamp illumination is controlled e Malfunction of TCL ECU e Malfunction of ABS ECU Yes Is the ABS warning lamp illuminated or is an ABS diagnosis code Carry out ABS troubleshooting Refer to GROUP 35B Trouble output shooting No 1 NG l Check the following connectors m gt Repair A 04 C 10 OK Y Check trouble symptom NG Ad NG i Inspect the harness between the ABS ECU and the TCL ECU Repair OK Y Replace the TCL ECU Y NG Check trouble symptom Replace the ABS ECU INSPECTION CHART FOR TROUBLE SYMPTOMS Trouble symptom Inspection Reference page procedure No Communication Communication with all systems is not possible 1 13H 16 with the MUT II is not possible Communication with TCL ECU only is not possible 2 13H 17 Malfunction of None of the TCL indicator lamps TCL OFF TCL illuminate 13H 18 TCL indicator when the ignition switch is ON lamp display One of the TCL indicator lamps does not illuminate when 13H 18 the ignition switch is ON Another lamp does illuminate TCL OFF indicator lamp remains illuminated even after the 13H 19 engine is started TCL OFF indicator lamp flashes after the engine is started TCL remains illuminated even after the engine is started
251. it stalls at idling Die out 13A 138 The engine stalls when starting the car Pass out 13A 139 The engine stalls when decelerating 13A 139 Driving Hesitation sag or stumble 13A 140 The feeling of impact or vibration when accelerating 13A 140 The feeling of impact or vibration when decelerating 13A 141 Poor acceleration 13A 141 Surge 13A 142 Knocking 13A 142 Dieseling 13A 142 Too high CO and HC concentration when idling 13A 143 Low alternator output voltage approx 12 3 V 13A 144 Idling speed is improper when A C is operating 13A 144 Fans radiator fan A C condensor fan are inoperative 13A 145 MPI lt 6A1 gt Troubleshooting 13A 127 PROBLEM SYMPTOMS TABLE FOR YOUR INFORMATION Items Symptom Starting Won t start The starter is used to crank the engine but there is no combustion within the cylinders and the engine won t start Fires up and dies There is combustion within the cylinders but then the engine soon stalls Hard starting Engine starts after cranking a while Idling stability Hunting Engine speed doesn t remain constant changes at idle Rough idle Usually a judgement can be based upon the movement of the tachometer pointer and the vibration transmitted to the steering wheel shift lever body etc This is called rough idle Incorrect idle speed
252. ition switch ON Operation sound can be heard Glow plug relay Turns relay from OFF to ON and from ON to OFF Ignition switch ON Battery volt age is applied to glow plug when glow plug relay is ON Procedure No 25 A C compres sor relay Turns relay from OFF to ON and from ON to OFF Ignition switch ON AIC switch ON A C compres sor clutch operation sound can be heard Procedure No 26 Throttle sole noid valve Turns throttle solenoid valve ON Engine 1500 r min Throttle valve opens half way Code No 41 Turns throttle solenoid valve OFF Engine Idling Throttle valve opens fully Code No 41 Timing control solenoid valve Drives timing control sole noid valve at 94 duty Ignition switch ON Operation sound can be heard Code No 43 Solenoid type spill valve Turns sole noid type spill valve from OFF to ON and from ON to OFF Ignition switch ON Operation sound can be heard Code No 44 EGR solenoid valve Turns EGR solenoid valve OFF Engine Idling EGR valve closes Procedure No 24 Glow indicator lamp Turns glow indicator lamp ON and OFF Ignition switch ON Glow indicator lamp illumi nates and switches OFF Engine warn ing lamp Turns engine warning lamp ON and OFF Ignition switch ON Engine warn ing lamp illuminates and switches OFF
253. ition switch ON Steering wheel turned slowly to left HIGH and LOW display alternately Steering wheel sensor ST 2 Steering wheel position Ignition switch ON Steering wheel turned slowly to right HIGH and LOW display alternately Engine model Ignition switch ON 6A13 Valve type Ignition switch ON SOHC Aspiration type Ignition switch ON N A Engine classifica tion Ignition switch ON NORMAL Destination NOTE 1 A T 2 For Europe Ignition switch ON EUR 2 TCL Troubleshooting 13H 23 CHECK AT ECU TERMINALS TAF a sle7 8 sfol 11 32133134135136 oe ee el 1415 16 17 18 19 20 21 22 23 EE 39 40 A03X0101 Terminal Check item Measurement condition Normal condition No 1 Diagnosis control When MUT II is not connected Approx 5 V When MUT II is connected OV Earth Ignition switch ON OV Diagnosis data input When MUT II is connected Serial communica tion with MUT II When MUT II is not connected 1 V or less A T ECU data communication Engine Idling Other than 0 V Engine ECU data communication Engine Idling Other than 0 V APS output Ignition switch ON 45 55V Accelerator pedal fully depressed Ignition switch ON 0 4 1 0 V Accelerator pedal released Wheel speed sensor input rear left Engine Idling Vehicle slowly moving forward Flashes between 0 wheel V and appr
254. iving MPI lt 6A1 gt Troubleshooting 13100910305 Malfunctioning item Control contents during malfunction Air flow sensor 1 Uses the throttle position sensor signal and engine speed signal crank angle sensor signal to take reading of the basic injector drive time and basic ignition timing from the pre set mapping 2 Fixes the ISC servo in the appointed position so idle control is not performed Intake air temperature sensor Controls as if the intake air temperature is 25 C Throttle position sensor TPS No increase in fuel injection amount during acceleration due to the throttle position sensor signal Engine coolant temperature sensor Controls as if the engine coolant temperature is 80 C Top dead centre sen sor Injects fuel to all cylinders simultaneously However after the ignition switch is turned to ON the No 1 cylinder top dead centre is not detected at all Barometric pressure sensor Controls as if the barometric pressure is 101 kPa Detonation sensor Switches the ignition timing from ignition timing for super petrol to ignition timing for standard petrol Oxygen sensor Air fuel ratio feedback control closed loop control is not performed Communication wire with transmission control unit lt A T gt Ignition timing is not retarded during transmission gear shifting overall engine and transmission control Alternator FR terminal NOTE
255. ixed with the fuel Malfunction of the injectors Malfunction of the fuel pump system Malfunction of the engine ECU Malfunction of the immobilizer system Foreign materials in fuel NG Check battery voltage when cranking OK 8 V or higher OK Y Yes Is immobilizer ECU diagnosis code displayed No y MUT II Inspection of no initial combustion Refer to P 13A 152 INSPECTION PROCEDURE 38 OK Y NG Can any sound be heard from the injectors when cranking OK Y Ignition system Inspection of no initial combustion Refer to P 13A 153 INSPECTION PROCEDURE 39 OK Y Check the battery Refer to GROUP 54 Battery Check the immobilizer Refer to GROUP 54 Ignition Key and Immobilizer Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Check the following items e Check the ignition coil spark plugs spark plug cables Check if the injectors are clogged Check the compression pressure Check the immobilizer system Check if foreign materials water alcohol etc got into fuel 13A 132 INSPECTION PROCEDURE 6 Initial combustion but no complete combustion starting impossible MPI lt 6A1 gt Troubleshooting Probable cause In such cases as the above the cause is probably that the spark plugs are generating sparks but the sparks are weak or the initial mix
256. k the harness wire between engine ECU connector terminal No 91 and earth and repair if necessary 13A 148 MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 31 Ignition switch ST and inhibitor switch system lt A T gt Probable cause e The ignition switch ST inputs a HIGH signal to the engine ECU while the engine Malfunction of ignition switch is cranking Malfunction of inhibitor switch The engine ECU controls fuel injection etc during starting based on this input Improper connector contact open circuit or The inhibitor switch inputs the condition of the select lever i e whether it is in short circuited harness wire P or N range or in some other range to the engine ECU Malfunction of the engine ECU The engine ECU controls the idle speed control ISC servo based on this input NG Check the inhibitor switch Replace Refer to GROUP 23A On vehicle Service Jok 1 NG NG Measure at the inhibitor switch connector B 72 gt Check harness wire be _ Repair e Disconnect the connector and measure at the harness side tween engine ECU and 1 Voltage between 10 and earth Ignition switch ON inhibitor switch connector OK System voltage 2 NG 2 Continuity between 9 and earth joK OK Continuity 3 Voltage between 10 and earth e Ignition switch START e Disconnect engine ECU connector OK System voltage 3 NG Check harness wire between inhi
257. ken vacuum hose e PCV valve does not operate e Broken air intake hose 2 Check the injector for clog 13A 158 INSPECTION PROCEDURE 46 MPI lt 6A1 gt Troubleshooting Check the engine ECU power supply and earth circuit INSPECTION PROCEDURE 47 1 NG NG Measure the engine ECU connectors C 33 C 35 C 39 Check the following Repair e Disconnect the connector and measure at the harness side connectors C 92 C 131 1 Voltage between 82 and earth Ignition switch ON OK OK System voltage 2 3 NG 2 Voltage between 38 and earth Check trouble symptom OK System voltage 3 Voltage between 12 25 and earth Ignition switch ON 4 NG p95 OK System voltage when the terminal 38 is earthed NG 4 Continuity between 13 26 and earth Check the harness wire Repair OK Continuity SNE between engine ECU and 5 Voltage between 80 and earth ignition switch connector OK System voltage JoK OK Check the ignition switch NG Refer to GROUP 54 Ignition Switch and Immobilizer System Check the following gt Repair connectors C 33 C 35 C 39 L Check the harness wire between engine ECU and control relay OK connector and repair if necessary AA Check trouble symptom L Check the harness wire between engine ECU and earth and repair ie if necessary Replace th
258. ket between the fuel pressure gauge and the special tool so as to seal in order to prevent fuel leakage at this time Install the special tool which was set in place in steps 3 and 4 between the delivery pipe and the high pressure hose Use a jumper wire to connect the terminal No 2 fuel pump drive terminal of the 3 pin connector shown in the illustration to the battery terminal in order to activate the fuel pump Under fuel pressure check the fuel pressure gauge and special tool connections for leaks Disconnect the jumper wire from the fuel pump drive terminal to stop the fuel pump Start the engine and run at idle Measure fuel pressure while the engine is running at idle Standard value Approx 265 kPa at kerb idle 13A 190 MPI lt 6A1 gt On vehicle Service 10 Disconnect the vacuum hose from the fuel pressure regulator and measure fuel pressure with the hose end closed by a finger Standard value 324 343 kPa at kerb idle 11 Check to see that fuel pressure at idle does not drop even after the engine has been raced several times 12 Racing the engine repeatedly hold the fuel return hose lightly with fingers to feel that fuel pressure is present in the return hose NOTE If the fuel flow rate is low there will be no fuel pressure in the return hose 13 If any of fuel pressure measured in steps 9 to 12 is out of specification troubleshoot and repair according to the table below Symptom P
259. l position Engine stop Selector lever position P Fully closed 300 1 000 mV Depressed Gradually rises from the above value Fully open 4 500 5 500 mV Inhibitor switch Ignition switch ON Engine stop Selector lever P position Selector lever R position Selector lever N position Selector lever D position Selector lever 3 position Selector lever 2 position Selector lever L position Shift position Shift lever position D Driving at constant speed of 10 km h in 1 range Driving at constant speed of 30 km h in 2 range Driving at constant speed of 50 km h in 3 range Driving at constant speed of 70 km h in 4 range Idle switch Accelerator pedal position Ignition switch ON Depressed Released Ignition switch Ignition switch ON Ignition switch OFF Stop lamp switch Brake pedal position Ignition switch ON Depressed Released TCL ON switch TCL ON switch operation Ignition switch ON Pressed Released TCL OFF switch TCL OFF switch operation Ignition switch ON Pressed Released 13H 22 Check item TCL Troubleshooting Check condition Normal condition ECU power supply voltage Ignition switch ON System voltage Front right wheel speed sensor Engine running Selector lever position Vehicle stopped 0 km h Driving at 40 km h
260. l solenoid valve controls the purging of air from the canister located inside the intake manifold NG Check the purge control solenoid valve Refer to GROUP 17 Emission Control System p JoK e Malfunction of solenoid valve e Improper connector contact short circuited harness wire e Malfunction of the engine ECU open circuit or Replace NG Measure at the purge control solenoid valve connector B 04 e Disconnect the connector and measure at the harness side e Voltage between 2 and earth Ignition switch ON OK System voltage i Check the harness wire between control relay and solenoid valve connector and repair if necessary JoK NG Measure at the engine ECU connector C 33 e Disconnect the connector and measure at the harness side e Voltage between 24 and earth Ignition switch ON OK System voltage NG Check the following Repair connector B 04 OK AA Check trouble symptom NG Y OK Y NG Check the following Repair connector C 33 OK Y Check trouble symptom NG Y Replace the engine ECU Check the harness wire between engine ECU and solenoid valve connector and repair if necessary 13A 152 INSPECTION PROCEDURE 37 EGR control solenoid valve system MPI lt 6A1 gt Troubleshooting Probable cause The EGR control soleno
261. lay Refer to GROUP 55 On vehicle Service NG OK Y NG Check the A C variable capacity relay Refer to GROUP 55 On vehicle Service OK Y NG Measure at the engine ECU connector C 55 e Disconnect the connector and measure at the harness side connector e Voltage between 52 and earth and between 53 and earth Ignition switch ON OK 0 3 V A C switch OFF System voltage A C switch ON e Short circuit between 53 and earth Ignition switch ON A C switch ON OK A C compressor clutch turns on e OK m gt Replace Replace Check the A C system Refer to GROUP 55 Troubleshooting Check the following connector C 55 OK Ne Repair Y Check trouble symptoms NG Y Replace the engine ECU 13E 38 DIESEL FUEL Troubleshooting DATA LIST REFERENCE TABLE Caution Driving tests always need another personnel Item No Inspection item Inspection contents Normal condition Inspection procedure No 13300420026 Reference page Intake air temperature sensor Ignition switch ON or with engine running Intake air temperature is 20 C 20 C Intake air temperature is 0 C 0 C Intake air temperature is 20 C 20 C Intake air temperature is 40 C 40 C Intake air temperature is 80 C 80 C Code No 16 13E 12 Engine cool ant tempera
262. le cause The cause is probably a malfunction of the control system injection pump or fuel Malfunction of the control system system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the engine ECU No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 Yes OK pne Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items e Injection pump e Injection nozzle DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 11 Idling speed is unstable Rough idling hunting 13E 29 Probable cause The cause is probably a malfunction of the control system injection pump fuel system air intake system or glow system Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake system malfunction of the glow system Malfunction of the EGR system Malfunction of the engine ECU No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES INSPECTION PROCEDURE 12 Engine stops soon after starting Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK pne Repair Check the following items Glow plug glow plug relay EGR system Injec
263. lowing connector ature sensor connector B 33 C 40 e Disconnect the connector and OK measure at the harness side e Voltage between 1 and earth Check trouble symptom Ignition switch ON wate Ay OK 4 5 4 9 V Ne e Continuity between 2 and earth OK Continuity Check the harness wire between the engine ECU and the engine coolant NG m Repair OK temperature sensor connector JK Replace the engine ECU 7 OK Check the following connector Check trouble symptom B 33 Ne NG T Replace the engine ECU Repair MPI lt 4G6 gt Troubleshooting 13A 17 Code No 22 Crank angle sensor system Probable cause Range of Check Malfunction of the crank angle sensor e Engine is cranking Improper connector contact open circuit or Set conditions short circuited harness wire of the crank angle sensor e Sensor output voltage does not change for 4 seconds no pulse signal input Malfunction of the engine ECU OK Measure at the crank angle sensor connector B 77 Replace the engine ECU e Connect the connector Use the test harness MD998478 e Voltage between 2 and earth Engine cranking OK 0 4 4 0 V e Voltage between 2 and earth Engine idling OK 1 5 2 5 V Na 1 NG Measure at the crank angle sensor connector B 77 __ Check the harness wire betwee
264. m Malfunction of the EGR system Malfunction of the glow system Malfunction of the engine ECU No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES INSPECTION PROCEDURE 18 Hunting occurs while driving Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK NG Repair Check the following items Glow plug glow plug relay Injection nozzle Throttle body assembly EGR system Turbocharger Injection pump Injection timing Probable cause The cause is probably a malfunction of the control system injection pump fuel system or EGR system No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the EGR system Malfunction of the engine ECU Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK NG Repair Check the following items e Injection nozzle fuel filter e EGR system e Injection pump DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 19 13E 33 Idling speed is improper when A C is operating OK Measure at the engine ECU connector C 54 e Connect the connector e Voltage between 39 and
265. more Set Conditions e Ignition switch ST signal high is input for 10 seconds or more NG Measure at the engine ECU connector C 55 e Disconnect the connector and measure at the harness side connector e Voltage between 51 and earth Ignition switch ST OK 8 V or higher OK Y Check the following connector C 55 OK Na Repair AA Check trouble symptom NG Y Replace the engine ECU Code No 23 Idle position switch 1 system e Malfunction of the starter relay e Malfunction of starter relay related circuit e Malfunction of the engine ECU Check the following connectors B 30 A 10 OK pne Repair y Check trouble symptom NG y Check the harness wire between the engine ECU and the starter relay connector OK NG Repair Y Replace the starter relay Probable cause Range of Check e Accelerator pedal position sensor signal output is 1 2 V or higher e idle position switch 2 OFF Set Conditions e idle position switch 1 on signal is input for 1 second or more Malfunction of the idle position switch 1 Open or short circuit in idle position switch 1 circuit or poor connector contact Malfunction of the engine ECU Range of Check e Accelerator pedal position sensor signal output is 0 58 V or lower e idle position switch 2 ON Set Conditions e Idle position switch 1 off signal is input for 1 second or more
266. n Check condition 1 12 No 1 injector 14 12 No 2 injector 2 12 No 3 injector 15 12 No 4 injector 13 16 Q At 20 C 4 12 Stepper motor coil A1 17 12 Stepper motor coil A2 5 12 Stepper motor coil B1 18 12 Stepper motor coil B2 28 33 Q At 20 C 6 12 EGR control solenoid valve 36 44 Q At 20 C 9 12 Purge control solenoid valve 36 44 Q At 20 C 13 Body earth Engine ECU earth 26 Body earth Engine ECU earth Continuity 09 60 12 Oxygen sensor heater 11 18 Q At 20 C 72 92 Intake air temperature sensor 5 3 6 7 kQ When intake air temperature is 0 C 2 3 3 0 kQ When intake air temperature is 20 C 1 0 1 5 kQ When intake air temperature is 40 C 0 30 0 42 kQ When intake air temperature is 80 C Engine coolant temperature sensor 5 1 6 5 kQ When coolant temperature is 0 C 2 1 2 7 kQ When coolant temperature is 20 C 0 9 1 3 kQ When coolant temperature is 40 C 0 26 0 36 kQ When coolant temperature is 80 C Idle position switch Continuity when throttle valve is at idle position No continuity when throttle valve is slightly open 91 Body earth Inhibitor switch lt A T gt Continuity when select lever is at P or N No continuity when select lever is at D 2 L or R 13A 72
267. n step 3 Use a suitable O ring or gasket between the fuel pressure gauge and the special tool so as to seal in order to prevent fuel leakage at this time Install the special tool which was set in place in steps 3 and 4 between the delivery pipe and the high pressure hose Connect the No 2 terminal of 3 pin connector fuel pump drive terminal shown in the figure at left to the battery terminal using a jumper wire and drive the fuel pump Under fuel pressure check the fuel pressure gauge and special tool connections for leaks Disconnect the jumper wire from the fuel pump drive terminal to stop the fuel pump Start the engine and run at idle Measure fuel pressure while the engine is running at idle Standard value Approx 265 kPa at kerb idle MPI lt 4G6 gt On vehicle Service 10 Disconnect the vacuum hose from the fuel pressure regulator and measure fuel pressure with the hose end closed by a finger Standard value 324 343 kPa at kerb idle 11 Check to see that fuel pressure at idle does not drop even after the engine has been raced several times 12 Racing the engine repeatedly hold the fuel return hose lightly with fingers to feel that fuel pressure is present in the return hose NOTE If the fuel flow rate is low there will be no fuel pressure in the return hose 13 If any of fuel pressure measured in steps 9 to 12 is out of specification troubleshoot and repair according to the table below
268. n the crank angle sensor and the e Disconnect the connector and measure at the harness side control relay connector and repair if necessary 1 Voltage between 3 and earth Ignition switch ON OK System voltage Pena Check the following con De Repair 2 Voltage between 2 and earth Ignition switch ON nector C 40 OK 4 8 5 2 V 3 Continuity between 1 and earth 3 NG OK OK Continuity ul Check trouble symptom OK 1 NG NG Check the following con Repair T NG 2 nector B 77 Check the harness wire Repair between the engine ECU and yor the crank angle sensor Check trouble symptom connector K ne f Replace the crank angle sensor Replace the soging ECU Check the harness wire between the crank angle sensor and the earth and repair if necessary 13A 18 Code No 23 Camshaft position sensor system MPI lt 4G6 gt Troubleshooting Probable cause Range of Check e Ignition switch ON e Engine speed is approx 50 r min or more Set conditions e Sensor output voltage does not change for 4 seconds no pulse signal input Measure at the camshaft position sensor connector B 64 e Connect the connector Use the test harness MB991223 and jumper wire e Voltage between 2 and earth Engine cranking OK 0 4 3 0 V e Voltage between 2 and earth Engine idling OK 1 5 2 0 V Na Measure at the camshaft position sensor connector B 64 e Disconnect the connector an
269. nal 90 Standard Wave Pattern Observation conditions Function Special patterns Pattern height Low Pattern selector Display Engine r min Idle speed The time cycle time T is reduced when the amount of intake air increases Times T1 and T2 are equal Time TFU1199 Wave Pattern Observation Points Check that cycle time T becomes shorter and the frequency increases when the engine speed is increased 13A 176 MPI lt 6A1 gt Troubleshooting Examples of Abnormal Wave Patterns e Example 1 Cause of problem Sensor interface malfunction Wave pattern characteristics Rectangular wave pattern is output even when the engine is not started 01P0199 e Example 2 Cause of problem Damaged rectifier or vortex generation column Wave pattern characteristics Unstable wave pattern with non uniform frequency However when an ignition leak occurs during acceleration the wave pattern will be distorted temporarily even if the air flow sensor is normal TOP DEAD CENTER SENSOR AND CRANK ANGLE SENSOR Distributor connector Analyzer SZ Measurement Method CTSTAEYET 1 Disconnect the distributor connector and connect the Crank angle special tool test harness MB991348 and jumper wire sensor connector in between All terminals should be connected gt a 2 Connect the analyzer special patterns pickup to distributor terminal 5 top dead centre sensor Special pakoe 3 Disconnect the cr
270. nd Actuator test Refer to P 13E 38 42 OK pne Repair Check the following items e Power supply system e Throttle body assembly e EGR system e Injection pump Probable cause The cause is probably a malfunction of the control system injection pump fuel system air intake system or EGR system Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake system Malfunction of the EGR system Malfunction of the engine ECU No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK NG Repair Check the following items Injection nozzle fuel filter Throttle body assembly EGR system Turbocharger Compression pressure Injection timing Injection pump Contamination water kerosene etc in fuel DIESEL FUEL Troubleshooting INSPECTION PROCEDURE 15 Abnormal engine knocking occurs 13E 31 Probable cause The cause is probably a malfunction of the control system injection pump or fuel system No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES INSPECTION PROCEDURE 16 Abnormally black smoke Malfunction of the
271. nditions e Malfunction of the accelerator pedal position sensor e Open or short circuit is detected in accelerator pedal position sensor circuit e Open or short circuit in accelerator pedal position or sensor circuit or poor connector contact e Mechanical problem is detected in accelerator pedal position sensor e Malfunction of the engine ECU Range of Check e Idle position switch 1 ON e Idle position switch 2 ON Set Conditions e Accelerator pedal position sensor signal output is 1 2 V or higher NG Check the accelerator pedal position sensor Refer to P 13E 57 __ Replace JoK NG Measure at the accelerator pedal position sensor connector B 41 Check the following connector e Disconnect the connector and measure at the harness side C 54 connector OK NG e Voltage between 1 and earth Ignition switch ON OK 45 55 V Repair e Continuity between 4 and earth P OK Continuity y Check trouble symptom OK y NG Check the following connector y B 41 Check the harness wire between the engine ECU and the accelera tor pedal position sensor connector OK jna sara sel OK NG Repair g Y Repair y Check trouble symptom Repair the engine ECU NG y Replace the engine ECU 13E 10 DIESEL FUEL Troubleshooting Code No 12 Boost sensor system Probable cause Range of Check Set Conditions e Open or short circuit is
272. ne ECU open circuit or Replace NG Check the following Repair connector B 30 OK AA Check trouble symptom NG AA Check the harness wire between battery and control relay connector and repair if necessary 13A 46 INSPECTION PROCEDURE 27 Fuel pump system MPI lt 4G6 gt Troubleshooting Probable cause The engine ECU turns the control relay ON when the engine is cranking or running and this supplies power to drive the fuel pump Malfunction of the fuel pump relay Malfunction of the fuel pump Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or Check the fuel pump circuit Refer to P 13A 58 INSPECTION PROCEDURE 46 Measure at the fuel pump relay connector C 32 e Connect the connector e Voltage between 1 and earth e MUT II Actuator test Fuel pump drive OK System voltage NG Check the fuel pump operation Refer to P 13A 88 J me OK Y NG Check the fuel pump relay Refer to P 13A 90 Replace OK Y NG a Check the fuel pump drive control circuit Refer to P 13A 59 INSPECTION PROCEDURE 47 JoK Check the harness wire between fuel pump relay connector and fuel pump drive terminal and repair if necessary INSPECTION PROCEDURE 28 Idle position switch system Probable cause The idle position switch inputs the condition of
273. ne stalls when starting the car Pass out Probable cause In cases such as the above the cause is probably misfiring due to a weak spark Drawing air into intake system or an inappropriate air fuel mixture when the accelerator pedal is depressed e Malfunction of the ignition system Yes MUT II Self Diag code Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Y NG MUT II Actuator test Check the EGR control solenoid valve system Refer to P 13A 152 10 EGR control solenoid valve Refer to P 13A 167 INSPECTION PROCEDURE 37 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if air was drawn into the intake system Broken intake manifold gasket Broken or disconnected vacuum hose Improper operation of the PCV valve Broken air intake hose INSPECTION PROCEDURE 14 The engine stalls when decelerating Probable cause In cases such as the above the cause is probably that the intake air volume is insufficient Malfunction of the ISC system due to a defective idle speed control ISC servo system Yes Were the battery terminals disconnected m After warming up let the engine run at idling for 10 minutes No Y Yes MUT II Self Diag code e Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis cod
274. nector If there is no continuity replace the oxygen sensor Warm up the engine until engine coolant is 80 C or higher Use the jumper wire to connect terminal 3 of the oxygen sensor connector to the battery terminal and terminal 4 to the battery terminal Caution Be very careful when connecting the jumper wire incorrect connection can damage the oxygen sensor Connect a digital voltage meter between terminal 1 and terminal 2 While repeatedly racing the engine measure the oxygen sensor output voltage Standard value Engine Oxygen sensor Remarks output voltage When 0 6 1 0 V If you make the air fuel ratio racing the rich by racing the engine engine repeatedly a normal oxy gen sensor will output a voltage of 0 6 1 0 V If the sensor is defective replace the oxygen sensor NOTE For removal and installation of the oxygen sensor refer to GROUP 15 Exhaust Pipe and Main Muffler MPI lt 6A1 gt On vehicle Service ve MN KA Oxygen sensor rear DEIT Equipment side connector 6AF0367 ii 2 3 4 MB991223 7FU0830 7FU0694 Intermediate harness side connector E Injector intermediate harness connector 13A 197 lt Oxygen sensor rear gt 1 INJECTOR CHECK Disconnect the oxygen sensor connector and connect the special tool test harness set to the connector on the oxygen sensor side Make sure that there is continuity 11 18 Q at
275. nector C 11 gt Check the following ___ Repair e Ignition switch ON e connectors e Connector connected C 11 C 75 C 106 e Voltage between terminals 32 40 and 41 and the body NG Stays at JK earth OV without OK Changes between approx 3 V and approx 0 5 V when changing Check trouble symptom the steering wheel is turned NG NG Changes between 4 V NG Stays at 4 V or more or more and approx 0 5 V without changing Replace the TCL ECU NG NG i Measure at steering wheel sensor connector C 106 Check the following Repair e Disconnect the connector and measure at the harness side connectors e Continuity between terminal 3 and body earth C 106 C 62 OK Continuity Jok OK Check trouble symptom pne Check the harness between the steering wheel sensor and the body earth and repair if necessary NG l Check the following connectors m gt Repair C 106 C 75 C 11 OK Y Check trouble symptom NG ya NG Inspect the harness between the steering wheel sensor and the __ Repair TCL ECU OK Y Replace the steering wheel sensor TCL Troubleshooting 13H 13 Code No 44 Steering wheel sensor circuit system Probable cause short circuit This diagnosis code is output when no steering angle signal is output because there Malfunction of harness or connector is a short circuit in either steering wheel sensor ST 1 or steering wheel sensor ST 2 Malfunc
276. negative terminal of the power supply to the blue and black clip 3 Connect the negative terminal of the power supply to the blue and yellow clip 4 Connect the negative terminal of the power supply to the red and yellow clip 5 Connect the negative terminal of the power supply to the red and black clip 6 Repeat the tests in sequence from 5 to 1 If as a result of these tests vibration is detected the stepper motor can be considered to be normal PURGE CONTROL SOLENOID VALVE CHECK 13100560241 Refer to GROUP 17 Emission Control System EGR CONTROL SOLENOID VALVE CHECK 13100570206 Refer to GROUP 17 Emission Control System MPI lt 6A1 gt On vehicle Service 13A 201 Be ER sat v Vacuum control Ventilation control solenoid valve solenoid valve Battery 6AFO081 6AFO082 A A Vacuum control Ventilation control solenoid valve solenoid valve VENTILATION CONTROL SOLENOID VALVE CHECK lt Vehicles with TCL gt 13100630041 NOTE When disconnecting the vacuum hose always make a mark so that it can be reconnected at original position 1 Disconnect the vacuum hose green stripe from the solenoid valve 2 Disconnect the harness connector 3 Connect a hand vacuum pump to the nipple 4 Check air tightness by applying a vacuum with voltage applied directly from the battery to the solenoid valve and without
277. ng OK Approx 5 BTDC belt cover INSPECTION PROCEDURE 40 MUT II Check if uncomplete combustion occurs Yes MUT II Self Diag code m e Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODE No Y NG MUT II Actuator test Check the fuel pump system 07 Fuel pump Refer to P 13A 167 Refer to P 13A 146 INSPECTION PROCEDURE 27 OK Y NG MUT II Data list __ Check the engine coolant temperature sensor system 21 Engine coolant temperature sensor Refer to P 13A 163 Refer to P 13A 115 INSPECTION PROCEDURES FOR DIAGNO SIS CODE 21 OK Y NG MUT II Data list __ Check the ignition switch ST system lt M T gt 18 Ignition switch ST Refer to P 13A 163 Refer to P 13A 147 INSPECTION PROCEDURE 30 Check the ignition switch ST and inhibitor switch system lt A T gt Refer to P 13A 148 INSPECTION PROCEDURE 31 INSPECTION PROCEDURE 41 Check if hunting occurs Clean the throttle body Refer to P 13A 184 Y Check and adjust the fixed SAS Refer to P 13A 187 Y Check trouble symptom NG Y Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken air intake hose e Broken vacuum hose e Positive crankcase ventilation valve does not operate 13A 154 INSPECTION PROCEDURE 42 MUT II Check if idling speed is unstable
278. nge the brakes should be applied so that the vehicle does not move forward NOTE 1 2 3 4 5 In anew vehicle driven approximately 500 km or less the air flow sensor output frequency is sometimes 10 higher than the standard frequency The idle position switch normally turns off when the voltage of the throttle position sensor is 50 100 mV higher than the voltage at the idle position If the throttle position switch turns back on after the throttle position sensor voltage has risen by 100 mV and the throttle valve has opened the idle position switch and the throttle position sensor need to be adjusted The injector drive time represents the time when the cranking speed is at 250 r min or below when the power supply voltage is 11 V In a new vehicle driven approximately 500 km or less the injector drive time is sometimes 10 longer than the standard time In a new vehicle driven approximately 500 km or less the step of the stepper motor is sometimes 30 steps greater than the standard value Inspection item Inspection contents Normal condition Inspection procedure No Reference page Oxygen sensor front Engine After having warmed up Air fuel mixture is made leaner when decelerating and is made richer when racing When at 4 000 r min engine is suddenly decelerated 200 mV or less When engine is suddenly raced 600 1 000 mV Engine After having warmed up The
279. ngine is suddenly raced 0 Procedure No 24 13E 36 Injection rate correction resistance value Ignition switch ON 0 2 4 5 V Injection timing correction resistance value Ignition switch ON Fuel injec tion rate command value Engine After having warmed up Engine Idling 3 5 12 5 m st A C switch OFF ON Increases slightly Actual injec tion timing Engine After having warmed up The same value as the injec tion timing command value is displayed Injection timing com mand value Engine After having warmed up Engine Idling 12 6 14 6 deg Engine Racing to 3500 r min or more Advances slightly Radiator fan A C con denser fan duty ratio Engine Idling When radiator fan and condenser fan are not operating 0 When radiator fan and condenser fan are operating 5 or more varies in accor dance with fan operating speed Procedure No 26 Item No Inspection item DIESEL FUEL Troubleshooting Inspection contents Normal condition Inspection procedure No 13E 41 Reference page Idle position switch 1 Built into accelerator pedal posi tion sensor Ignition switch ON Accelerator pedal is released ON Accelerator pedal is slightly depressed Code No 23 13E 16 Idle position switch 2 Ignition switch ON Accelerator pedal is
280. ngine starts Set conditions e Sensor output voltage is 4 6 V or more corresponding to an intake air temperature of 45 C or less for 4 seconds or e Sensor output voltage is 0 2V or less corresponding to an intake air temperature of 125 C or more for 4 seconds Malfunction of the intake air temperature sensor Improper connector contact open circuit or short circuited harness wire of the intake air temperature sensor circuit Malfunction of the engine ECU NG Check the following connector Repair C 40 OK Y Check trouble symptom NG Y NG Check the intake air temperature Replace sensor Refer to P 13A 90 JoK NG Measure at the air flow sensor con nector B 12 e Disconnect the connector and measure at the harness side e Voltage between 6 and earth Ignition switch ON OK 4 5 4 9 V e Continuity between 5 and earth OK Continuity OK 1 NG Check the following connector Repair B 12 OK Y NG Check trouble symptom gt Replace the engine ECU Check the harness wire between the engine ECU and the intake air temperature sensor connector m Repair JoK Replace the engine ECU Code No 14 Throttle position sensor system MPI lt 4G6 gt Troubleshooting 13A 15 Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON
281. ning check the diagnosis code output Engine warning lamp check engine lamp 6FU2688 MPI lt 6A1 gt Troubleshooting 13A 109 Engine warning lamp inspection items Engine ECU Oxygen sensor Air flow sensor Intake air temperature sensor Throttle position sensor Engine coolant temperature sensor Crank angle sensor Top dead centre sensor Barometric pressure sensor Detonation sensor Injector Vacuum control solenoid valve lt TCL gt Ventilation control solenoid valve lt TCL gt Immobilizer system METHOD OF READING AND ERASING DIAGNOSIS CODES Refer to GROUP 00 How to Use Troubleshooting Inspection Service Points INSPECTION USING MUT II DATA LIST AND ACTUATOR TESTING 1 Carry out inspection by means of the data list and the actuator test function If there is an abnormality check and repair the chassis harnesses and componenis 2 After repairing re check using the MUT II and check that the abnormal input and output have returned to normal as a result of the repairs Erase the diagnosis code memory Remove the MUT II Start the engine again and carry out a road test to confirm that the problem has disappeared Ci 13A 110 FAIL SAFE FUNCTION REFERENCE TABLE When the main sensor malfunctions are detected by the diagnosis function the vehicle is controlled by means of the pre set control logic to maintain safe conditions for dr
282. nition system Malfunction of air fuel ratio control system Malfunction of the ISC system Malfunction of the purge control solenoid valve system Malfunction of the EGR solenoid valve system Poor compression Drawing air into exhaust system After warming up let the engine run at idling for 10 minutes Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check if hunting occurs Refer to P 13A 53 INSPECTION PROCEDURE 40 Check the ISC servo system Refer to P 13A 50 INSPECTION PROCEDURE 34 Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGNOSIS CODE 41 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables Check the purge control system Check the EGR control system Check the compression pressure e e e e Check if foreign materials water alcohol etc got into fuel MPI lt 4G6 gt Troubleshooting 13A 35 INSPECTION PROCEDURE 9 Idling speed is high Improper idling speed Probable cause In such cases as the above the cause is probably that the intake air volume during Malfunction of the ISC servo system idling is too great e Malfunction of the throttle body Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION
283. ns Basic idle speed r min 650 50 Throttle position sensor ad Vehicles without TCL 400 1 000 justing voltage mV Vehicles with TCL 580 690 Accelerator pedal position sensor adjusting voltage mV 400 1 000 Throttle position sensor resistance kQ 3 5 6 5 Accelerator pedal position sensor resistance kQ 3 5 6 5 Idle speed control servo coil resistance Q 28 33 at 20 C Intake air temperature sensor 20 C 2 3 3 0 resistance kQ 80 C 0 30 0 42 Engine coolant temperature 20 C 2 1 2 7 sensor resistance kQ 80 C 0 26 0 36 Oxygen sensor output voltage V 0 6 1 0 Fuel pressure kPa Vacuum hose disconnection 324 343 at kerb idle Vacuum hose connection Approx 265 at kerb idle Injector coil resistance Q 13 16 at 20 C Ventilation control solenoid valve coil resistance Q 36 44 at 20 C Vacuum control solenoid valve coil resistance Q 36 44 at 20 C S EALANT 13100050205 Item Specified sealant Remark Engine coolant temperature sensor 3M Nut Locking Part No 4171 or equivalent Drying sealant threaded portion MPI lt 6A1 gt Special Tools 13A 107 SPECIAL TOOLS 13100060345 Number Name MB991223 Harness set Fuel gauge simple inspection A MB991219 A Test harness Connector pin contact pressure inspection B MB991220 LED harness Power circuit inspection B Power circuit inspection G MBg9 1221
284. nt temperature is 20 C 0 9 1 3 kQ When engine coolant temperature is 40 C 0 26 0 36 kQ When engine coolant temperature is 80 C Intake air temperature sensor 5 3 6 7 KQ When intake air temperature is 0 C 2 3 3 0 kQ When intake air temperature is 20 C 1 0 1 5 kQ When intake air temperature is 40 C 0 30 0 42 kQ When intake air temperature is 80 C Injection timing correction 0 1 2 5 kQ At 20 C resistor Idle position switch 1 Continuity When accelerator lever is at idle position No continuity When accelerator lever is at slightly open Analyzer INSPECTION PROCEDURE USING AN ANALYZER 43300460028 CRANK ANGLE SENSOR Measurement Method 1 Disconnect the crank angle sensor connector and connect the special tool test harness MD998478 in between 2 Connect the analyzer special patterns pickup to crank Special angle sensor connector terminal 2 black clip of special patterns tool pickup DFU0678 Alternate Method Test harness not available Connect the analyzer special patterns pickup to engine ECU terminal 9 DIESEL FUEL Standard Wave pattern Observation conditions Function Troubleshooting 13E 49 Special patterns Pattern height Low Pattern selector Display Engine r min Standard wave pattern Idle speed 2 engine revolutions mt 15 BTDC 75 ATDC 1 camshaft revolution
285. ntrol system Malfunction of the fuel supply system Malfunction of the EGR control solenoid valve system Poor compression Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Y NG Check the injectors for operation sound __ Check the injector system Refer to P 13A 21 INSPECTION PRO OK CEDURE FOR DIAGNOSIS CODE 41 Y NG Check the ignition timing __ Check that the crank angle sensor is installed properly Refer to GROUP 11A On vehicle Service OK Y MUT II Check if hesitation sag stumble or poor acceleration occur Refer to P 13A 56 INSPECTION PROCEDURE 43 OK Y Check the fuel pressure Refer to P 13A 85 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables Check the EGR control system Check the compression pressure Check the fuel filter or fuel line for clogging INSPECTION PROCEDURE 16 The feeling of impact or vibration when accelerating Probable cause In cases such as the above the cause is probably that there is an ignition leak Malfunction of the ignition system accompanying the increase in the spark plug demand voltage during acceleration Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Check the following items e Check the ignition co
286. of the float valve moving knocking sound can be heard when the valve assembly is gently shaken up and down then the valve is okay FUEL GAUGE UNIT CHECK Refer to GROUP 54 Combination Meter FUEL GAUGE UNIT REPLACEMENT 13500140065 1 Remove the rear seat cushion Refer to GROUP 52A 2 Remove the protector and then disconnect the connector from the fuel gauge unit 3 Remove the mounting nut and then remove the fuel gauge unit 4 Install the new fuel gauge unit align the projections on the packing indicated by arrows in the illustration with the holes in the fuel gauge unit and then tighten the mounting nut to the standard torque 5 Connect the connector and then install the protector 6 Install the rear seat cushion Refer to GROUP 52A FUEL SUPPLY Fuel Filter 13F 5 FUEL FILTER REMOVAL AND INSTALLATION Pre removal Operation Post installation Operation e Reduce the Inner Pressure of Fuel Line and Hose e Checking for Fuel Leaks lt Petrol powered Vehicles gt Refer to GROUP 13A On vehicle Service 13500280101 lt Diesel powered vehicles gt lt d gt PB lt pad Removal steps lt Petrol powered vehicles gt 0310011 00006149 1 High pressure fuel hose connection 6 Fuel filter cartridge 2 Main pipe connection 3 Main hose connection 4 Fuel filter assembly 5 Water level sensor 7 Breather screw 8 Fuel filter pump body 9 Fuel filter bracket REMOVAL SERVICE POINT
287. oint A Induced electromotive force signal wave pattern 7FU1204 MPI lt 6A1 gt Troubleshooting 13A 181 Wave Pattern Observation Points Check that the standard wave pattern appears when the stepper motor is operating Point A Presence or absence of induced electromotive force from the motor turning Refer to the abnormal wave pattern Contrast with standard wave pattern Probable cause Induced electromotive force does not appear or is extremely small Motor is malfunctioning Point B Height of coil reverse electromotive force Contrast with standard wave pattern Probable cause Coil reverse electromotive force does not appear or is extremely small Short in the coil Examples of Abnormal Wave Pattern e Example 1 Cause of problem Motor is malfunctioning Motor is not operating Wave pattern characteristics Induced electromotive force from the motor turning does not appear 01P0209 e Example 2 Cause of problem Open circuit in the line between the stepper motor and the engine ECU Wave pattern characteristics Current is not supplied to the motor coil on the open circuit side Voltage does not drop to 0 V Furthermore the induced electromotive force waveform at the normal side is slightly different from the normal waveform 13A 182 MPI lt 6A1 gt Troubleshooting IGNITION COIL AND POWER TRANSISTOR e Ignition coil primary signal z Refer to GROUP 16 I
288. ollows Loosen the tension of the accelerator cable sufficiently Connect the MUT II to the diagnosis connector Turn the ignition switch to ON but do not start the engine Check the accelerator pedal position sensor output voltage when the accelerator pedal is fully depressed Standard value 4 000 4 690 mV If the output voltage is outside the standard value range loosen the accelerator pedal position sensor mounting bolt and turn the accelerator pedal position sensor body to adjust Standard value 4 350 mV Tighten securely the accelerator pedal position sensor mounting bolt Back out the idle position switch 2 lock nut Adjust the idle position switch 2 so that the accelerator pedal position sensor output voltage is within the standard value range when the accelerator pedal is released Standard value 530 570 mV While holding the idle position switch 2 so that it doesn t move tighten the lock nut securely Turn the ignition switch to OFF Disconnect the MUT IL Adjust the tension of the accelerator cable DIESEL FUEL On vehicle Service COMPONENT LOCATION Name Name 13E 55 13300470021 A C relay Engine coolant temperature sensor A C switch Engine ECU Accelerator pedal position sensor with built in idle position switch 1 Engine warning lamp check engine lamp Boost sensor Glow indicator lamp Control relay Glow plug relay Crank angle sensor Idle p
289. on Cover the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line 17 Replace the O ring at the end of the fuel high pressure hose with a new one Furthermore apply engine oil to the new O ring before replacement 18 Fit the fuel high pressure hose over the delivery pipe and tighten the bolt to specified torque Tightening torque 5 Nm 19 Check for fuel leaks 1 Apply the battery voltage to the fuel pump drive terminal to drive the fuel pump 2 Under fuel pressure check the fuel line for leaks 13A 88 MPI lt 4G6 gt On vehicle Service FUEL PUMP CONNECTOR DISCONNECTION HOW TO REDUCE THE FUEL PRESSURE 13100090252 When removing the fuel pipe hose etc since fuel pressure in the fuel pipe line is high do the following operation so as to release fuel pressure in the line and prevent fuel from running out 1 Raise the rear seat cushion 2 Disconnect the floor wiring harness and fuel wiring harness A0310034 under the floor carpet 3 After starting the engine and letting it run until it stops naturally turn the ignition switch to OFF 4 Connect the fuel wiring harness and floor wiring harness 5 Install the rear seat cushion FUEL PUMP OPERATION CHECK 13100200105 1 Check the operation of the fuel pump by using the MUT II to force drive the fuel pump 2 If the fuel pump will not operate check by using the following procedur
290. on PAd 8 Throttle body gasket 13A 208 MPI lt 6A1 gt Throttle Body lt Vehicles with TCL and lt Vehicles with TCL gt auto cruise control system gt A0310061 Removal steps 1 Accelerator cable connection 5 Vacuum hose connection 2 Throttle position sensor connector 6 Water hose connection 3 Idle speed control servo connector 7 Vacuum pipe assembly 4 Accelerator pedal position sensor 8 Throttle body connector PAdq 9 Throttle body gasket INSTALLATION SERVICE POINT pA lt q THROTTLE BODY GASKET INSTALLATION Place the gasket so that the projecting part is positioned as shown in the illustration and then install it between the intake manifold and the throttle body Towards front of vehicle A0310079 MPI lt 6A1 gt Throttle Body 13A 209 DISASSEMBLY AND REASSEMBLY 13100970297 lt Vehicles without TCL and auto cruise control system gt PB lt 6AE0382 Disassembly steps 1 Throttle position sensor NOTE 2 Idle speed control servo Stepper 1 The fixed SAS and the speed adjusting screw are motor correctly adjusted at the factory and should not be 3 O ring removed 4 Fast idle air valve 2 If the fixed SAS should happen to have been 5 O ring removed carry out fixed SAS adjustment 6 Throttle body Refer to page 13A 187 7 Fixed SAS _ 3 If the speed adjusting screw should happen to have Speed adjusting screw been removed carry out speed adjusting screw O ring adjustment Refe
291. on sensor lt Vehicles with TCL gt EGR control solenoid valve Throttle position sensor with idle position switch lt Vehicles without TCL gt Engine coolant temperature sensor Vacuum control solenoid valve lt Vehicles with TCL gt Engine ECU Vehicle speed sensor Engine warning lamp check engine lamp F Vite JR Nain Cun ee Ventilation control solenoid valve lt Vehicles with TCL gt 6FU2695 6FU2698 6AFO362 MPI lt 6A1 gt On vehicle Service 13A 193 CONTROL RELAY AND FUEL PUMP RELAY CONTINUITY CHECK 13100990187 fae j Equipment side connector Battery voltage Terminal No 1 Not supplied Supplied O a gt Fuel pump relay and control relay eT gt l 6FU2701 Air flow sensor with INTAKE AIR TEMPERATURE SENSOR CHECK 7 intake air tempera 13100280246 ture sensor 1 Disconnect the air flow sensor connector 2 Measure resistance between terminals 5 and 6 Standard value 2 3 3 0 kQ at 20 C 0 30 0 42 kQ at 80 C 6AFO331 3 Measure resistance while heating the sensor using a hair drier Normal condition Temperature C Resistance kQ Higher Smaller 4 If the value deviates from the standard value or the resistance remains unchanged replace the air flow sensor assembly ENGINE COOLANT TEMPERATURE SENSOR CHECK 13100310259 Caution Be careful not to touch the conn
292. onnector y B 33 Check the harness wire between the engine ECU and the engine coolant temperature sensor connector OK jna eee OK NG Repair Y Repair Check trouble symptom Y Replace the engine ECU NG y Replace the engine ECU Code No 16 Intake air temperature sensor system Probable cause Range of Check Set Conditions e Malfunction of the intake air temperature sensor e Open or short circuit is detected in intake air temperature sensor circuit for 3 Open or short circuit in intake air temperature sensor seconds circuit or poor connector contact e Malfunction of the engine ECU NG Check the intake air temperature sensor Refer to P 13E 56 Replace JoK NG Measure at the intake air temperature sensor connector B 45 Check the following connector e Disconnect the connector and measure at the harness side C 54 connector OK NG e Voltage between 1 and earth Ignition switch ON OK 45 55 V Repair e Continuity between 2 and earth P OK Continuity y OK Check trouble symptom Y NG Check the following connector y B 45 Check the harness wire between the engine ECU and the intake air temperature sensor connector OK NG OK NG Repair a y Repair Check trouble symptom Y Replace the engine ECU 4NG Replace the engine ECU DIESEL FUEL Troubleshooting Code No 17 Vehicle speed sens
293. ons in order to maintain engine performance In addition when the engine is warm or operating under normal conditions the engine ECU controls the air fuel mixture by using the oxygen sensor signal to carry out closed loop control in order to obtain the theoretical air fuel mixture ratio that provides the maximum cleaning performance from the three way catalyst conditioner load In addition when the air conditioner switch is turned off and on while the engine is idling the ISC motor operates to adjust the throttle valve bypass air amount in accordance with the engine load conditions in order to avoid fluctuations in the engine speed engine operating conditions The ignition timing is determined by the engine ECU from the engine speed intake air volume engine coolant temperature and atmospheric pressure code corresponding to the abnormality is output e The RAM data inside the engine ECU that is related to the sensors and actuators can be read by means of the MUT II In addition the actuators can be force driven under certain circumstances MPI lt 6A1 gt General Information OTHER CONTROL FUNCTIONS 1 Fuel Pump Control Turn the fuel pump relay ON so that current is supplied to the fuel pump while the engine is cranking or running 2 A C Relay Control Turn the compressor clutch of the A C ON and OFF 3 Fan Relay Control The revolutions of the radiator fan and condenser fan are controlled in response to th
294. ooting INSPECTION PROCEDURE 35 Idle speed control ISC servo Stepper motor system 13A 151 Probable cause The engine ECU controls the intake air volume during idling by opening and closing the servo valve located in the bypass air passage NG gt Replace Check the ISC servo Refer to P 13A 199 york Malfunction of ISC servo Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or NG Measure at the ISC servo connector B 10 __ Check the harness wire between control relay and ISC servo con e Disconnect the connector and measure at the harness side nector and repair if necessary e Voltage between 2 and earth and 5 and earth Ignition switch ON OK System voltage JoK NG NG 2 Measure at the engine ECU connector C 33 gt Check the following Repair e Disconnect the connector measure at the harness side connector B 10 e Voltage between each of 4 5 17 18 and earth Ignition switch OK ON OK System voltage Check trouble symptom Y NG Check the following Repair Check harness wire between engine ECU and ISC servo connector connector C 33 and repair if necessary OK Y NG Check trouble symptom __ Replace the engine ECU INSPECTION PROCEDURE 36 Purge control solenoid valve system Probable cause The purge contro
295. operation inspection Refer to GROUP 13H or 23 On vehicle Service Normal condition Vehicle condition Normal negative pressure when accelerator pedal is depressed Vehicle is lifted up 20 kPa or more Driving on a dry sealed No change road surface NOTE The traction control system function will stop 20 seconds after the accelerator pedal has been depressed and negative pressure will gradually drop a POWER STEERING AIR CONTROL VALVE LG i G OPERATION CHECK 13101180019 Power steerin ary air control Re 1 Disconnect the vacuum hose connected to air intake hose from the power steering air control valve and plug the vacuum hose 2 Connect a vacuum gauge to the power steering air control valve nipple from which the vacuum hose has been disconnected 3 Start the engine and run at idle 6AFO371 4 Check that the value of the vacuum gauge changes from O kPa barometric pressure to 60 kPa or more when turning the steering wheel 13A 204 MPI lt 6A1 gt Injector INJECTOR REMOVAL AND INSTALLATION lt Front bank gt Pre removal Operation e Fuel Discharge Prevention Refer to P 13A 88 Removal steps Engine cover Crank angle sensor connector Injector connector Vacuum hose connection Air pipe assembly mounting bolt Vacuum hose connection Fuel return hose connection NOORONM 1110052 pPAd 8 PAd 9 lt qAp 10 11 12 lt A gt PA 13 14 13100710349
296. opped Engine Cranking Procedure No 30 lt M T gt Procedure No 31 lt A T gt 13A 147 lt M T gt 13A 148 lt M T gt Engine coolant tempera ture sensor Ignition switch ON or with engine running When engine coolant temperature is 20 C When engine coolant temperature is 0 C When engine coolant temperature is 20 C When engine coolant temperature is 40 C When engine coolant temperature is 80 C Code No 21 13A 115 13A 164 Inspection item MPI lt 6A1 gt Troubleshooting Inspection contents Normal condition Inspection procedure No Reference page Crank angle sen sor Engine Crank ing Tachometer Connected Compare the engine speed readings on the tachometer and the MUT II Accord Engine Idling Idle position switch ON When engine coolant temperature is 20 C 1 300 1 500 rpm When engine coolant temperature is 0 C 1 300 1 500 rpm When engine coolant temperature is 20 C 1 300 1 500 rom When engine coolant temperature is 40 C 1 100 1 300 rpm When engine coolant temperature is 80 C 550 750 rpm Code No 22 13A 116 Barometric pressure sensor Ignition switch ON At altitude of 0 m 101 kPa At altitude of 600 m 95 kPa At altitude of 1 200 m 88 kPa At altitude of 1 800 m 81 kPa 13A 119 Idle posi t
297. or Set conditions short circuited harness wire of the crank angle sensor e Sensor output voltage does not change for 4 seconds no pulse signal input Malfunction of the engine ECU OK Measure at the crank angle sensor connector B 77 Replace the engine ECU e Connect the connector Use the test harness MD998478 e Voltage between 2 and earth Engine cranking OK 0 4 4 0 V e Voltage between 2 and earth Engine idling OK 1 5 2 5 V Na 1 NG Measure at the crank angle sensor connector B 77 __ Check the harness wire between the crank angle sensor and the e Disconnect the connector and measure at the harness side control relay connector and repair if necessary 1 Voltage between 3 and earth Ignition switch ON OK System voltage Pena Check the following con De Repair 2 Voltage between 2 and earth Ignition switch ON nector C 39 OK 4 8 5 2 V 3 Continuity between 1 and earth 3 NG OK OK Continuity Y Check trouble symptom OK ul NG NG Check the following con Repair T NG 2 nector B 77 Check the harness wire Repair between the engine ECU and yor the crank angle sensor Check trouble symptom connector K ne f Replace the crank angle sensor Replace the soging ECU Check the harness wire between the crank angle sensor and the earth and repair if necessary MPI lt 6A1 gt Troubleshooting 13A 117
298. or acceleration is inability to obtain an acceleration corresponding to the degree of throttle opening even though acceleration is smooth or the inability to reach maximum speed Stumble Engine speed increase is delayed when the accelerator pedal is initially depressed for accelera tion Normal Initial ac celerator pedal de pression Stumble 1FU0224 13A 28 Items MPI lt 4G6 gt Troubleshooting Symptom Driving Shock The feeling of a comparatively large impact or vibration when the engine is accelerated or decelerated Surge This is repeated surging ahead during constant speed travel or during variable speed travel Knocking A sharp sound like a hammer striking the cylinder walls during driving and which adversely affects driving Run on Dieseling Stopping INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS INSPECTION PROCEDURE Communication with MUT II is not possible 1 Communication with all systems is not possible The condition in which the engine continues to run after the ignition switch is turned to OFF Also called Dieseling Probable cause The cause is probably a defect in the power supply system including earth for the diagnosis line Measure at the diagnostic connector 16 pin C 20 e Voltage between 16 and earth OK Battery voltage NG e Malfunction of the connector e Malfunction of the harness w
299. or system 13E 13 Probable cause Range of Check e Engine speed 2 400 r min or more e Accelerator pedal opening amount 50 or more e Engine coolant temperature 60 C or higher Set Conditions e Vehicle speed signal is 0 km h for 10 seconds or more Check the vehicle speed sensor Refer to GROUP 54 Combina tion Meters NG e Malfunction of the vehicle speed sensor e Open or short circuit in vehicle speed sensor circuit or poor connector contact e Malfunction of the engine ECU m Replace JoK 1 NG Measure at the vehicle speed sensor connector B 66 Check the following connectors e Disconnect the connector and measure at the harness B 65 C 90 C 135 C 131 side OK NG 1 Voltage between 1 and earth Ignition switch ON 2 NG OK System voltage Repair 2 Voltage between 3 and earth Ignition switch ON OK 4 8 5 2 V Y 3 Continuity between 2 and earth 3 NG Check trouble symptom OK Continuity NG OK T Y Check the harness wire between the vehicle speed sensor and Check the following connectors ignition switch connector B 66 C 53 OK Ne OK Ne Repair Repair Y y Check the ignition switch Refer to GROUP 54 Ignition Switch Check trouble symptom yne _ Check the following connectors Check the harne
300. or test e 10 EGR control solenoid valve Refer to P 13A 65 OK Y Check the fuel pressure Refer to P 13A 85 OK Y NG Check the ignition timing Refer to GROUP 11A On vehicle Service OK Y Check the EGR control solenoid valve system Refer to P 13A 51 INSPECTION PROCEDURE 36 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables e Check the compression pressure e Check the engine oil viscosity 13A 38 INSPECTION PROCEDURE 12 When the engine is hot it stalls at idling Die out MPI lt 4G6 gt Troubleshooting Probable cause In such cases as the above the cause is probably that ignition system air fuel mixture idle speed control ISC or compression pressure is defective In addition if the engine suddenly stalls the cause may also be a defective connector contact Malfunction of the ignition system Malfunction of air fuel ratio control system Malfunction of the ISC system Drawing air into intake system Improper connector contact After warming up let the engine run at idling for 10 minutes Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES Check the ISC servo system Refer to P 13A 50 INSPECTION PROCEDURE 34 Check the injector system Refer to P 13A 21 INSPECTION PRO CEDURE FOR DIAGN
301. oreign materials water alcohol etc got into fuel MPI lt 4G6 gt Troubleshooting 13A 39 INSPECTION PROCEDURE 13 The engine stalls when starting the car Pass out Probable cause In cases such as the above the cause is probably misfiring due to a weak spark Drawing air into intake system or an inappropriate air fuel mixture when the accelerator pedal is depressed e Malfunction of the ignition system Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Y NG MUT II Actuator test __ Check the EGR control solenoid valve system Refer to P 13A 51 10 EGR control solenoid valve Refer to P 13A 65 INSPECTION PROCEDURE 36 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check if air was drawn into the intake system Broken intake manifold gasket Broken or disconnected vacuum hose Improper operation of the PCV valve Broken air intake hose INSPECTION PROCEDURE 14 The engine stalls when decelerating Probable cause In cases such as the above the cause is probably that the intake air volume is insufficient Malfunction of the ISC system due to a defective idle speed control ISC servo system Yes Were the battery terminals disconnected m Afte
302. ors B 02 B 03 B 05 B 36 B 40 B 44 m gt Repair OK Y Check trouble symptom NG Y Check the harness between engine ECU and injector connector and repair if necessary Repair MPI lt 6A1 gt Troubleshooting 13A 161 INSPECTION PROCEDURE 52 Check ignition coil and power transistor unit circuit NG Check the ignition coil Refer to GROUP 16 Ignition System __ Replace OK Ri NG Check the power transistor unit Replace Refer to GROUP 16 Ignition System OK 1 1 NG NG Measure at the distributor connector B 42 gt Check the following Repair e Disconnect the connector and measure at the harness side connector C 33 1 Voltage between 3 and earth Ignition switch START OK OK 2 7V 2 NG i 2 Continuity between 2 and earth OK No continuity Check trouble symptom NG 0K y NG z ae Check the harness wire gt Repair Check the following connectors and repair if necessary between the engine ECU B 42 and the distributor con nector joK Replace the engine ECU __ As short circuit occurs between distributor and combination meter tachometer check the harness wire and repair if necessary 13A 162 DATA LIST REFERENCE TABLE MPI lt 6A1 gt Troubleshooting 13100890296 Caution When shifting the select lever to D ra
303. osition switch 2 Diagnosis connector Intake air temperature sensor Diesel fuel temperature sensor Pump operation sensor EGR solenoid valve Throttle solenoid valve Solenoid type spill valve Timing control solenoid valve Solenoid type spill valve relay FITOI A gt rO DFUO686 Vehicle speed sensor mr ojrov oimne 6FU2695 DFUQ685 13E 56 DIESEL FUEL On vehicle Service CONTROL RELAY AND SOLENOID TYPE SPILL VALVE RELAY CONTINUITY CHECK 13300620013 Battery voltage Terminal No 1 2 Not supplied Supplied INTAKE AIR TEMPERATURE SENSOR CHECK 13300490027 1 Disconnect the intake air temperature sensor connector 2 Measure resistance between terminals 1 and 2 Standard value 2 3 3 0 kQ at 20 C 0 30 0 42 kQ at 80 C 3 Remove the intake air temperature sensor 4 Measure resistance while heating the sensor using a hair Intake air drier temperature a sensor Z Normal condition Temperature C Resistance kQ Higher Smaller 5 If the value deviates from the standard value or the resistance remains unchanged replace the intake air temperature sensor 6 Install the intake air temperature sensor and tighten it to the specified torque Tightening torque 12 15 Nm DIESEL FUEL On vehicle Service 13E 57 pe Ts Engine coolant Ae temperature sensor A1610298 9FU0156 9FU0157
304. otive force from the motor turning Refer to the abnormal wave pattern Contrast with standard wave pattern Probable cause Induced electromotive force does not appear or is extremely small Motor is malfunctioning Point B Height of coil reverse electromotive force Contrast with standard wave pattern Probable cause Coil reverse electromotive force does not appear or is extremely small Short in the coil Examples of Abnormal Wave Pattern e Example 1 Cause of problem Motor is malfunctioning Motor is not operating Wave pattern characteristics Induced electromotive force from the motor turning does not appear 01P0209 e Example 2 Cause of problem Open circuit in the line between the stepper motor and the engine ECU Wave pattern characteristics Current is not supplied to the motor coil on the open circuit side Voltage does not drop to 0 V Furthermore the induced electromotive force waveform at the normal side is slightly different from the normal waveform Special patterns pickup Standard Wave Pattern Observation condition Function MPI lt 4G6 gt Troubleshooting 13A 79 Analyzer IGNITION COIL AND POWER TRANSISTOR Power transistor control signal Measurement Method 1 Disconnect the ignition coil connector and connect the special tool test harness MB991348 in between All terminals should be connected 2 Connect the analyzer special patterns pickup
305. ower transistor malfunction Examples of Abnormal Wave Patterns e Example 1 Wave pattern during engine cranking Cause of problem Open circuit in ignition primary circuit Wave pattern characteristics Top right part of the build up section cannot be seen and voltage value is approximately 2 V too low Normal wave pattern e Example 2 Wave pattern during engine cranking Cause of problem Malfunction in power transistor Wave pattern characteristics Power voltage results when the power transistor is ON Normal wave pattern 13A 184 Throttle position sensor with built in idle position switch MPI lt 6A1 gt On vehicle Service 6AFO358 ON VEHICLE SERVICE 13100100313 THROTTLE BODY THROTTLE VALVE AREA CLEANING 1 Start the engine and warm it up until the coolant is heated to 80 C or higher and then stop the engine 2 Remove the air intake hose from the throttle body 3 Plug the bypass passage inlet of the throttle body Caution Do not allow cleaning solvent to enter the bypass passage 4 Spray cleaning solvent into the valve through the throttle body intake port and leave it for about 5 minutes 5 Start the engine race it several times and idle it for about 1 minute If the idling speed becomes unstable or if the engine stalls due to the bypass passage being plugged slightly open the throttle valve to keep the engine running If the throttle valve deposits are not removed repeat
306. ox 5 V Wheel speed sensor input front Engine Idling Vehicle slowly moving forward Flashes between 0 right wheel V and approx 5 V Wheel speed sensor input front Engine Idling Vehicle slowly moving forward Flashes between 0 left wheel V and approx 5 V Wheel speed sensor input rear Engine Idling Vehicle slowly moving forward Flashes between 0 right wheel V and approx 5 V ECU power supply Ignition switch ON Battery voltage Earth Ignition switch ON OV Earth Ignition switch ON OV 13H 24 Terminal No TCL Check item Troubleshooting Measurement condition Normal condition 32 Steering wheel sensor ST N input Engine Idling Steering wheel in straight ahead position 0 5 V or less Engine Idling Steering wheel turned 90 from straight ahead position 2 5 3 5V TCL ON switch Ignition switch ON TCL switch Pressed to ON side 0 2V Ignition switch ON TCL switch Released Battery voltage Ignition switch IG2 Ignition switch ON Battery voltage ECU back up power supply Ignition switch OFF Battery voltage Steering wheel sensor ST 1 input Ignition switch ON Steering wheel turned slowly Flashes between 0 V and approx 3 V Steering wheel sensor ST 2 input Ignition switch ON Steering wheel turned slowly Flashes between 0 V and approx 3 V TCL OFF switch Ignition switch ON TCL
307. pecial patterns pickup to engine ECU terminal 1 When checking the No 1 cylinder 2 Connect the analyzer special patterns pickup to engine ECU terminal 14 When checking the No 2 cylinder 3 Connect the analyzer special patterns pickup to engine ECU terminal 2 When checking the No 3 cylinder 4 Connect the analyzer special patterns pickup to engine ECU terminal 15 When checking the No 4 cylinder 5 Connect the analyzer special patterns pickup to engine ECU terminal 3 When checking the No 5 cylinder 6 Connect the analyzer special patterns pickup to engine ECU terminal 16 When checking the No 6 cylinder MPI lt 6A1 gt Troubleshooting 13A 179 Standard Wave Pattern Observation conditions Function Special patterns Pattern height Variable Variable knob Adjust while viewing the wave pattern Pattern selector Display Engine r min Idle speed Standard wave pattern Point A Solenoid back electromotive force Approx 7x10 V Point B Injector drive time od Power voltage t Drive signal ON Drive signal OFF Time 7FU1202 Wave Pattern Observation Points Point A Height of solenoid back electromotive force Contrast with standard wave pattern Probable cause Solenoid coil back electromotive force is low or doesn t Short in the injector solenoid appear at all Point B Injector drive time e The injector drive time will be synchroni
308. pple with your finger and apply 67 kPa of vacuum Then check that the vacuum leaks immediately when you remove the finger blocking the nipple VACUUM ACTUATOR CHECK 13100820042 lt Vehicles with TCL gt 1 Remove the vacuum hose green stripe from the vacuum actuator and connect a hand vacuum pump to the vacuum actuator With the accelerator pedal depressed check that the rod is pulled up and that vacuum is held when 27 kPa of vacuum is applied THROTTLE VALVE OPERATION CHECK 13100830052 lt Vehicles with TCL gt 1 Check that the throttle valve opens and closes smoothly throttle lever moves according to the opening and closing of the accelerator lever If the throttle valve does not open and close smoothly there might be a deposit on the throttle valve so clean the throttle body Refer to P 13A 184 MPI lt 6A1 gt On vehicle Service 13A 203 ar oe ee Se NEGATIVE PRESSURE CHECK DURING Vacuum actuator TRACTION CONTROL OPERATION 13100840055 lt Vehicles with TCL gt 1 Disconnect the vacuum hose green stripe from the vacuum actuator connect a hand vacuum pump between the actuator nipple and the vacuum hose via a T joint Set the hand vacuum pump near the driver s seat so Green stripe that the negative pressure check can be carried out at ae the driver s seat l IA 2 Check the negative pressure during traction control operation Inspection service points are the same as for the traction control
309. r system Probable cause Range of Check Malfunction of the oxygen sensor rear 3 minutes have passed after engine was started Improper connector contact open circuit or Engine coolant temperature is approx 80 C or more short circuited harness wire Idle position switch OFF Malfunction of the engine ECU The throttle position sensor output voltage is 4 1 V or more Open loop control in operation t conditions The oxygen sensor rear output voltage is 0 1 V or less The difference in the maximum and minimum values for the oxygen sensor rear output voltage is 0 08 V or less The oxygen sensor rear output voltage is 0 5 V or more The above conditions continue for a continuous period of 5 seconds e e e e e e 20 seconds have passed after deceleration finished Se e e NG Check the oxygen sensor rear Refer to P 13A 93 ___ __ Replace JOK 1 NG Measure at the oxygen sensor rear connector C 85 Check the harness wire between the e Disconnect the connector and measure at the oxygen sensor rear and the control harness side relay connector and repair ifnecessary 1 Voltage between 3 and earth Ignition switch ON OK S 2 NG NG System voltage Check the following connector Repair 2 Continuity between 2 and earth C 40 OK Continuity 3 Continuity between 4 and earth 3 NG OK
310. r FR terminal A T ECU TCL ECU lt TCL gt gt Engine gt ECU Injector Purge control solenoid valve Idle speed control servo EGR control solenoid valve Ventilation control solenoid lt TCL gt Vacuum control solenoid valve lt TCL gt valve Fuel pump relay Control relay A C power relay Engine warning lamp Diagnosis signal Ignition coil power transistor Fan controller Alternator G terminal A T ECU TCL ECU lt TCL gt 6 Vacuum control solenoid valve lt TCL gt 5 Ventiration control solenoid valve lt TCL gt ecu i 3 Intake air temperature sensor 3 Idle speed Air flow sensor with barometric Vacuum control servo pressure sensor actuator is lt TCL gt 3 ES Air cleaner rel 7 a Fuel pressure CSAS gt Ai FAF ir 4 a Throttle position ie 9 o TE sensor wi 1 Injector 94 idle ae Mah To fuel From fuel gt o fue Ba switch tank pump EGR control Spas ee solenoid valve Canister ngine 3 coolant 2 Purge control emp solenoid valve ure sensor 10Oxygen _ 6 Top dead centre sensor sensor 1 Oxygen rear 4 sensor front Distributor 6AF0355 Catalytic converter 7 Crank angle sensor 13A 106 MPI lt 6A1 gt Service Specifications Sealant SERVICE SPECIFICATIONS 13100030346 Items Specificatio
311. r Temperature Sensor Check 90 Engine Coolant Temperature Sensor CHECK AEE a toca orleans 90 Throttle Position Sensor Check 91 Idle Position Switch Check 91 Oxygen Sensor Check 0005 92 Injector Check 0 cece eee eee es 93 13109000409 Idle Speed Control ISC Servo Stepper Motor Check 000 cece eee eee 95 Purge Control Solenoid Valve Check 95 EGR Control Solenoid Valve Check 95 INJECTOR 00 cece eee eee 96 THROTTLE BODY 00020055 98 GENERAL INFORMATION 102 SERVICE SPECIFICATIONS 106 SEALANT sacarina ness has ely 106 SPECIAL TOOLS 3 cc020cse sessed ieee 107 TROUBLESHOOTING 108 ON VEHICLE SERVICE 184 Throttle Body Throttle Valve Area eee 5 Idle Position Switch and Throttle Position a ee Throttle Position Sensor Adjustment lt Vehicles with TCL gt asasan naaar 186 Idle Position Switch and Accelerator Pedal Position Sensor Adjustment lt Vehicles with TCL gt 0000 0s 186 Fixed SAS Adjustment 187 Basic Idle Speed Adjustment 188 CONTINUED ON NEXT PAGE Fuel Pressure Test 0 0000 189 Fuel Pump Connector Disconnection How to Reduce the Fuel Pressure 191 Fuel Pump Operation Check 191 Component Location 0 005 192 Control Relay and Fuel Pump Relay Continui
312. r and earth and repair if necessary Repair Repair or replace MPI lt 4G6 gt Troubleshooting 13A 23 Code No 54 Immobilizer system Probable cause Range of Check e Ignition switch ON Radio interference of ID codes Incorrect ID code Set Conditions Malfunction of harness or connector e Improper communication between the engine ECU and immobilizer ECU Malfunction of immobilizer ECU Malfunction of engine ECU NOTE 1 If the ignition switches are close each other when starting the engine radio interference may cause this code to be displayed 2 This code may be displayed when registering the key ID code Yes Is there another ignition key near the ignition key that is inserted Remove the extra ignition key in the ignition switch NG a Check trouble symptom No 1 Yes Is a diagnosis code output from the immobilizer ECU L e Check the immobilizer system Refer to GROUP 54 Ignition No Switch and Immobilizer System 1 NG l Check the following connectors m gt Repair C 38 C 81 C 68 OK Y Check trouble symptom NG Y OK Check the harness wire between the engine ECU and the immobiliz Replace the immobilizer ECU er ECU NG NG Y Check trouble symptom Repair jna Replace the engine ECU 13A 24 MPI lt 4G6 gt Troubleshooting Code No 59 Oxygen sensor rea
313. r out put circuit Refer to P 13A 60 IN SPECTION PROCEDURE 49 JoK Replace the engine ECU 13A 16 MPI lt 4G6 gt Troubleshooting Code No 21 Engine coolant temperature sensor system Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts Set conditions e Sensor output voltage is 4 6 V or more corresponding to an engine coolant temperature of 45 C or less for 4 seconds or e Sensor output voltage is 0 1 V or less corresponding to an engine coolant temperature of 140 C or more for 4 seconds Range of Check e Ignition switch ON e Engine speed is approx 50 r min or more Set conditions e The sensor output voltage increases from 1 6 V or less corresponding to an engine coolant temperature of 40 C or more to 1 6 V or more corresponding to an engine coolant temperature of 40 C or less After this the sensor output voltage is 1 6 V or more for 5 minutes NG Check the engine coolant temperature ___ Replace sensor Refer to P 13A 90 Malfunction of the engine coolant temperature sensor Improper connector contact open circuit or short circuited harness wire of the engine coolant temperature sensor circuit Malfunction of the engine ECU NG m Repair JoK NG Measure at the engine coolant temper Check the fol
314. r to 13A 188 13A 210 lt Vehicles with auto cruise control system gt pB lt 4 MPI lt 6A1 gt Throttle Body Disassembly steps COMONDTAW N Throttle position sensor Idle speed control servo Stepper motor O ring Fast idle air valve O ring Lever assembly Throttle body Fixed SAS Speed adjusting screw O ring 6AE0383 NOTE 1 N o The fixed SAS and the speed adjusting screw are correctly adjusted at the factory and should not be removed If the fixed SAS should happen to have been removed carry out fixed SAS adjustment Refer to page 13A 187 If the speed adjusting screw should happen to have been removed carry out speed adjusting screw adjustment Refer to 13A 188 MPI lt 6A1 gt Throttle Body 13A 211 lt Vehicles with TCL gt 6AE0384 Disassembly steps NOTE 1 Water hose 1 The fixed SAS and the speed adjusting screw are B4 2 Throttle position sensor correctly adjusted at the factory and should not be PA lt dq 3 Accelerator pedal position sensor removed 4 Idle speed control servo Stepper mo 2 If the fixed SAS should happen to have been tor removed carry out fixed SAS adjustment Refer to 5 O ring 13A 187 6 Fast idle air valve 3 If the speed adjusting screw should happen to have 7 O ring been removed carry out speed adjusting screw 8 Throttle lever adjustment Refer to 13A 188 9 Throttle body 10 Fixed SAS 11 Speed adjusting scre
315. r to improve ease of maintenance 13500060088 Use MB991610 Oil filter wrench B991610 Fuel filter cartridge replacement lt Diesel powered vehicles gt FUEL SUPPLY Fuel Tank 13F 3 FUEL TANK 13500190244 REMOVAL AND INSTALLATION Pre removal Operation Post installation Operation e Draining Fuel e Refilling Fuel e Reduce the Inner Pressure of Fuel Line and Hose e Checking for Fuel Leaks lt Petrol powered Vehicles gt Refer to GROUP 13A On vehicle Service vehicles gt vehicles gt R 4 lt Petrol powered lt Diesel powered Ay lt Petrol powered veiesel powered hicles gt vehicles gt A0310052 1 lt Diesel powered vehicles gt Removal steps 1 Drain plug 8 Vapour hose 2 Fuel filler cap 9 Fuel tank assembly 3 Fuel filler neck assembly 10 Fuel wiring harness 4 Packing 11 Filler hose e Parking brake cable connection Refer 12 Vapour hose to GROUP 36 13 Vapour cap e Rear seat cushion Refer to GROUP 14 Valve assembly 52A 15 Fuel pump assembly 5 Return hose 16 Fuel pipe assembly Aq 6 High pressure fuel hose 17 Fuel gauge unit assembly 7 Main hose 13F 4 FUEL SUPPLY Fuel tank 03T0038 INSTALLATION SERVICE POINT pA lt HIGH PRESSURE FUEL HOSE INSTALLATION Caution After connecting the high pressure fuel hose pull it gently in the direction of removal to check that the hose is firmly connected INSPECTION 43500300104 VALVE CHECK If the sound
316. r warming up let the engine run at idling for 10 minutes No Y Yes MUT II Self Diag code e Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Y NG MUT II Data list __ Check the idle position switch system 26 Idle position switch Refer to P 13A 63 Refer to P 13A 46 INSPECTION PROCEDURE 28 OK 1 NG MUT II Data list __ Check the throttle position sensor system Refer to P 13A 15 IN 14 Throttle position sensor Refer to P 13A 62 SPECTION PROCEDURE FOR DIAGNOSIS CODE 14 OK Y Yes MUT II Data list __ Check the vehicle speed sensor system Refer to P 13A 19 IN 45 ISC servo position SPECTION PROCEDURE FOR DIAGNOSIS CODE 24 e s the idle speed control ISC servo position drops to 0 2 steps when decelerating engine r min less than 1 000 No 1 NG MUT II Actuator test Check the EGR control solenoid valve system Refer to P 13A 51 10 EGR control solenoid valve Refer to P 13A 65 INSPECTION PROCEDURE 36 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Clean the throttle valve area e Check and adjust the fixed SAS 13A 40 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 15 Hesitation sag or stumble Probable cause In cases such as the above the cause is probably that ignition system air fuel mixture Malfunction of the ignition system or compression pressure is defective Malfunction of air fuel ratio co
317. rank angle sensor output wave pattern reduced when the engine speed increases Camshaft posi tion sensor out put wave pat tern i I 1 l I t t I l l 1 4 i j i t j I i j I I I l lj j I I l T t 1 l i I l t 1 I l I i 4 1 i t I t l l ij i l I l J l I I I l I I T a B 44 ee a tt e 9FU0674 No 1 TDC No 3TDC No 4TDC No 2TDC TDC Top dead centre Wave Pattern Observation Points Check that cycle time T becomes shorter when the engine speed increases Examples of Abnormal Wave Patterns 01P0199 7FUII92 Example 1 Cause of problem Sensor interface malfunction Wave pattern characteristics Rectangular wave pattern is output even when the engine is not started Example 2 Cause of problem Loose timing belt Abnormality in sensor disk Wave pattern characteristics Wave pattern is displaced to the left or right MPI lt 4G6 gt Troubleshooting 13A 75 Analyzer 9FU0595 INJECTOR Measurement Method 1 Disconnect the injector connector and then connect the special tool test harness MB991348 in between Both the power supply side and engine ECU side should be connected Connect the analyzer special patterns pickup to terminal 2 of the injector connector Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 1
318. re corresponding to a barometric pressure of 114 kPa or more for 4 seconds or e Sensor output voltage is 0 2 V or less corresponding to a barometric pressure of 5 33 kPa or less for 4 seconds Malfunction of the barometric pressure sensor Improper connector contact open circuit or short circuited harness wire of the barometric pressure sensor circuit Malfunction of the engine ECU NG m Repair NG y m Repair NG NG Measure atthe air flow sensor con Measure atthe air flow sensor con Check the following connector nector B 12 nector B 12 C 39 e Connect the connector Use e Disconnect the connector and OK the test harness MB991709 measure at the harness side y e Voltage between 2 and earth e Voltage between 1 and earth Ignition switch ON Ignition switch ON Cheek trouble symptom OK 3 7 4 3 V Altitude 0 m OK 4 8 5 2 V NG 3 2 3 8 V Altitude e Continuity between 5 and earth Y 1 200 m OK Continuity Check the harness wire between OK the engine ECU and the baromet OK ric pressure sensor connector Y OK Check the following connector Repair B 12 OK Y Check trouble symptom Replace the engine ECU NG 1 NG Check the harness wire between gt Repair the engine ECU and the baromet OK ric pressure sensor connector Replace the air flow sensor Y_ N
319. re at the harness side connector e Voltage between 1 and earth Ignition switch ON OK 45 55 V e Continuity between 2 and earth OK Continuity OK AA Check the following connector B 60 OK NG Repair Y Check trouble symptom NG Y Replace the engine ECU Code No 46 Injection rate correction resistor system Malfunction of the engine ECU Replace the injection pump Check the following connector C 54 OK NG Repair Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the injection timing correction resistor connector OK pne Repair AA Replace the engine ECU Probable cause Range of Check Set Conditions e Open or short circuit is detected in injection rate correction resistor circuit Malfunction of the injection rate correction resistor Open or short circuit in injection rate correction resistor circuit or poor connector contact NG Check the injection rate correction resistor Refer to P 13E 60 e JoK NG Measure at the injection rate correction resistor connector B 58 lt L H drive vehicles gt B 59 lt R H drive vehicles gt e Disconnect the connector and measure at the harness side connector e Voltage between 1 and earth Ignition switch ON OK 45 55 V e Continuity between 2 and earth OK Continuity e Y Check the following
320. re regulator MD116395 MD998706 Clip MB991608 7FU0145 Battery 4 Apply battery voltage to the No 2 terminal of 3 pin connector fuel pump drive connector shown in the figure at left and drive the fuel pump ee a pump drive connector 5 Activate the injector and check the atomized spray condition of the fuel 1E The condition can be considered satisfactory unless it F is extremely poor Return hose Injector m 6FU0628 Battery 6 Stop the actuation of the injector and check for leakage from the injector s nozzle Standard value 1 drop or less per minute 7 Activate the injector without activating the fuel pump then when the spray emission of fuel from the injector stops disconnect the special tool and restore it to its original condition MPI lt 4G6 gt On vehicle Service 13A 95 Idle speed control servo IDLE SPEED CONTROL ISC SERVO STEPPER MOTOR CHECK 13100540238 Checking the Operation Sound 1 Check that the engine coolant temperature is 20 C or below NOTE Disconnecting the engine coolant temperature sensor connector and connecting the harness side of the connector to another engine coolant temperature sensor that is at 20 C or below is also okay Check that the operation sound of the stepper motor can be heard after the ignition is switched ON but without starting the motor
321. released Accelerator pedal is slightly depressed A C switch Engine Idling When the A C switch is on the A C compressor should be driven A C switch ON A C switch OFF Procedure No 26 Ignition switch ST Ignition switch ON Engine Stopped Engine Cranking Ignition switch IG Ignition switch ON Control relay Ignition switch ON Procedure No 21 A C relay Engine Idling after having warmed up A C switch ON A C switch OFF Procedure No 26 Solenoid type spill valve relay Ignition switch ON Code No 44 Glow plug relay MUT II Actuator test Glow plug relay item No 2 is driven ON for approx 6 seconds Procedure No 25 Throttle solenoid valve Engine After having warmed up Engine Idling ON Gently racing OFF Code No 41 Engine warning lamp MUT II Actuator test Engine warning lamp item No 16 is driven ON For approx 6 seconds Glow indica tor lamp MUT II Actuator test Glow indicator lamp item No 15 is driven ON for approx 6 seconds Inspection item DIESEL FUEL Troubleshooting Drive contents ACTUATOR TEST REFERENCE TABLE Inspection contents Normal condition Inspection procedure No 13300440022 Reference page Solenoid type spill valve relay Turns relay from OFF to ON and from ON to OFF Ign
322. resistance is outside the standard value or if the resistance does not change smoothly replace the APS Adjust the APS after it has been replaced Refer to GROUP 13A On vehicle Service 13H 28 TCL TCL Switch TCL SWITCH REMOVAL AND INSTALLATION i INSPECTION TCL SWITCH CONTINUITY CHECK f A y A0310046 Removal steps 1 Switch bezel 2 TCL switch ON he k Switch position Terminal No a M e 13600160033 13600170036 1 2 Ne Neutral es a 3 4 516 OFF ON Neutral O3P0023 OFF TCL Steering Wheel Sensor 13H 29 STEERING WHEEL SENSOR 13600220014 REMOVAL AND INSTALLATION CAUTION SRS Before removal of air bag module and clock spring refer to GROUP 52B Service Precautions and Air Bag Module and Clock Spring B14w0057 Removal steps e Steering wheel and column cover Refer to GROUP 37A Steering Wheel and Shaft lt A gt 1 Steering wheel sensor Slit plate REMOVAL SERVICE POINT lt A gt STEERING WHEEL SENSOR REMOVAL Caution 1 Do not adhere any dust or grease etc to the steering wheel sensor which has a photo coupler in it Steering 2 Do not bend the slit plate of the column switch nor wheel sensor adhere any grease etc to it INSPECTION 13600230017 STEERING WHEEL SENSOR CHECK Refer to P 13H 22 13H 30 TCL TCL ECU TC L EC U 13600280036 REMOVAL AND INSTALLATION Pre removal and Post installa
323. ring Other SRS related components that may have to be removed installed in connection with SRS service or maintenance are indicated in the table of contents by an asterisk 13H 2 TCL General Information GENERAL INFORMATION For vehicles with 6A13 engine the TCL system slip control and trace control is available as an option This system facilitates starting accelerating and cornering on slippery roads such as snowy 13600010031 roads In addition this system improves driveability while cornering on normal roads and contributes to easier driving Ventilation solenoid valve Vacuum solenoid valve Steering wheel sensor Engine ECU Vacuum actuator TCL ECU ABS ECU Vacuum tank Accelerator pedal position sensor APS 0310047 A T ECU Stop lamp switch TCL switch WDA Indicator oa i A ER Z z Qar SA FA ka w g JD no 1610246 i 000061793 TCL Service Specification Special Tools Troubleshooting 13H 3 SERVICE SPECIFICATION 13600030013 Item Standard value Accelerator pedal position sensor resistance kQ 3 5 6 5 SPECIAL TOOLS 13600060029 Number Name Use MB991502 MUT II sub For checking of TCL Diagnosis code display assembly when using the MUT II MB991529 Diagnosis code For checking of TCL Diagnosis code display check harness when using the TCL OFF warning lamp TROUBL
324. rns ON and OFF to control the primary current flow to the ignition coil This controls the ignition timing in order to provide the optimum ignition timing with respect to the SELF DIAGNOSIS FUNCTION e When an abnormality is detected in one of the sensors or actuators related to emission control the engine warning lamp check engine lamp illuminates as a warning to the driver e When an abnormality is detected in one of the sensors or actuators a diagnosis activities such as fuel injection control idle speed control and ignition timing control In addition the engine ECU is equipped with several diagnosis modes which simplify troubleshooting when a problem develops The engine ECU provides a richer air fuel mixture by carrying out open loop control when the engine is cold or operating under high load conditions in order to maintain engine performance In addition when the engine is warm or operating under normal conditions the engine ECU controls the air fuel mixture by using the oxygen sensor signal to carry out closed loop control in order to obtain the theoretical air fuel mixture ratio that provides the maximum cleaning performance from the three way catalyst conditioner load In addition when the air conditioner switch is turned off and on while the engine is idling the ISC motor operates to adjust the throttle valve bypass air amount in accordance with the engine load conditions in order to avoid fluctuat
325. robable cause Defective ignition system abnormal air fuel ratio etc are suspected Refer to GROUP 11B On vehicle Service Yes MUT II Self Diag code Are diagnosis codes displayed No y NG Check the injectors for operation sound OK Y NG Check the ignition timing OK Y MUT II Check if surge occurs Refer to P 13 157 INSPECTION PROCEDURE 45 OK Y Check the fuel pressure Refer to P 13A 189 OK Y e Malfunction of the ignition system e Malfunction of air fuel ratio control system e Malfunction of the EGR control solenoid valve system Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables e Check the injector operation sound at the rear bank e Check the EGR control system INSPECTION PROCEDURE 20 Knocking Probable cause In cases as the above the cause is probably that the detonation control is defective or the heat value of the spark plug is inappropriate e Defective detonation sensor e Inappropriate heat value of the spark plug Yes MUT II Self Diag code Are diagnosis codes displayed No No Does knocking occur when driving with the sensor disconnec
326. robable cause Remedy Fuel pressure too low Fuel pressure drops after racing No fuel pressure in fuel return hose Clogged fuel filter Replace fuel filter Fuel leaking to return side due to poor fuel regulator valve seating or settled spring Replace fuel pressure regulator Low fuel pump delivery pressure Replace fuel pump Fuel pressure too high Binding valve in fuel pressure regulator Replace fuel pressure regulator Clogged fuel return hose or pipe Clean or replace hose or pipe Same fuel pressure when vacuum hose is connected and when disconnected Damaged vacuum hose or clogged nipple Replace vacuum hose or clean nipple MPI lt 6A1 gt On vehicle Service 13A 191 14 Stop the engine and check change of fuel pressure gauge reading Normal if the reading does not drop within 2 minutes If it does observe the rate of drop and troubleshoot and repair according to the table below Symptom Probable cause Remedy Fuel pressure drops gradually after Leaky injector Replace injector engine is stopped Leaky fuel regulator valve seat Replace fuel pressure regulator Fuel pressure drops sharply Check valve in fuel pump is heldopen Replace fuel pump immediately after engine is stopped 15 Release residual pressure from the fuel pipe line Refer to P 13A 191 16 Remove the fuel pressure gauge and special tool from the delivery pipe Caution Cover t
327. rottle position sensor resistance kQ 3 5 6 5 Idle speed control servo coil resistance Q 28 33 at 20 C Intake air temperature sensor resistance kQ 20 C 2 3 3 0 80 C 0 30 0 42 Engine coolant temperature sensor resistance kQ 20 C 2 1 2 7 80 C 0 26 0 36 Oxygen sensor output voltage V 0 6 1 0 Fuel pressure kPa Vacuum hose disconnection 324 343 at kerb idle Vacuum hose connection Approx 265 at kerb idle Injector coil resistance Q SEALANT Item 13 16 at 20 C Specified sealant 13100050199 Remark Engine coolant temperature sensor threaded portion 3M Nut Locking Part No 4171 or equivalent Drying sealant 13A 8 MPI lt 4G6 gt Special Tools SPECIAL TOOLS 13100060338 Number Name MB991223 Harness set Fuel gauge simple inspection A MB991219 A Test harness Connector pin contact pressure inspection B MB991220 LED harness Power circuit inspection B Power circuit inspection G MBg9 1221 C LED harness Commercial tester connection D MB991222 adapter D Probe C991223 MB991502 MUT II sub Reading diagnosis code assembly MPI system inspection MB991348 Test harness set Measurement of voltage during trouble shooting Inspection using an analyzer MB991709 Test harness MB991519 Alternator harness Measurement of voltage during connector troubleshooting MD
328. rried out once for each cylinder for every two rotations of the crankshaft The firing order is 1 2 3 4 5 6 This is called sequential fuel injection IDLE AIR CONTROL The idle speed is kept at the optimum speed by controlling the amount of air that bypasses the throttle valve in accordance with changes in idling conditions and engine load during idling The engine ECU drives the idle speed control ISC motor to keep the engine running at the pre set idle target speed in accordance with the engine coolant temperature and air IGNITION TIMING CONTROL The power transistor located in the ignition primary circuit turns ON and OFF to control the primary current flow to the ignition coil This controls the ignition timing in order to provide the optimum ignition timing with respect to the SELF DIAGNOSIS FUNCTION e When an abnormality is detected in one of the sensors or actuators related to emission control the engine warning lamp check engine lamp illuminates as a warning to the driver e When an abnormality is detected in one of the sensors or actuators a diagnosis activities such as fuel injection control idle speed control and ignition timing control In addition the engine ECU is equipped with several diagnosis modes which simplify troubleshooting when a problem develops The engine ECU provides a richer air fuel mixture by carrying out open loop control when the engine is cold or operating under high load conditi
329. ry adjustment NOTE If the idling speed is higher than the standard value range even when the SAS is fully closed check whether or not there is any indication that the fixed SAS has been moved If there is an indication that it has been moved adjust the fixed SAS MPI lt 6A1 gt On vehicle Service 13A 189 O Fuel pressure High pres gauge sure hose O ring or gasket EJ ai aa MD998709 MGF Bo Delivery pipe MD998742 Sa 7 1FU1198 7 O Press the MUT II clear key and release the ISC servo from the Actuator test mode NOTE Unless the ISC servo is released the Actuator test mode will continue 27 minutes Switch OFF the ignition switch Disconnect the MUT IL Start the engine again and let it run at idle speed for about 10 minutes check that the idling condition is normal FUEL PRESSURE TEST 13100190310 1 2 Release residual pressure from the fuel pipe line to prevent fuel gush out Refer to P 13A 191 Disconnect the fuel high pressure hose at the delivery pipe side Caution Cover the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line Remove the union joint and bolt from the special tool adapter hose MD998709 and instead attach the special tool hose adapter MD998742 to the adapter hose Install a fuel pressure gauge on the adapter hose that was set up in step 3 Use a suitable O ring or gas
330. ry voltage to terminal 2 fuel pump drive terminal of the 3 pin connector shown in the illustration and activate the fuel pump 5 Activate the injector and check the atomized spray condition of the fuel 1E The condition can be considered satisfactory unless it j is extremely poor Return hose Injector 6FU0628 Idle speed control servo MPI lt 6A1 gt On vehicle Service 13A 199 2 Stop the actuation of the injector and check for leakage from the injector s nozzle Standard value 1 drop or less per minute Activate the injector without activating the fuel pump then when the spray emission of fuel from the injector stops disconnect the special tool and restore it to its original condition IDLE SPEED CONTROL ISC SERVO STEPPER MOTOR CHECK 13100540245 Checking the Operation Sound 1 Check that the engine coolant temperature is 20 C or below NOTE Disconnecting the engine coolant temperature sensor connector and connecting the harness side of the connector to another engine coolant temperature sensor that is at 20 C or below is also okay Check that the operation sound of the stepper motor can be heard after the ignition is switched ON but without starting the motor If the operation sound cannot be heard check the stepper motor s activation circuit If the circuit is normal it is probable that there is a mal
331. s AA B 01 B 11 e Disconnect the connector and measure at the harness 1 Voltage between 1 and earth Ignition switch ON OK System voltage 2 Voltage between 3 and earth Engine Cranking 2 NG OK 0 5 4 0 V 3 Continuity between the 2 and earth 3 NG OK Continuity OK _ Ad NG Check the following connectors gt B 01 B 11 Y Check trouble symptom NG T NG Check the following items e Check the spark plugs spark plug cables e Check the compression pressure JoK Replace the ignition coil Check trouble symptom Na Replace the engine ECU Malfunction of the ignition coil Improper connector contact open circuit or short circuited harness wire of the ignition primary circuit Malfunction of the spark plug and spark plug cable Improper compression pressure Malfunction of the engine ECU OK Check the following connectors C 92 C 131 y Na Repair NG Check the following connector C 34 y OK Y Check trouble symptom NG Y OK Check the harness wire between the engine ECU and ignition coil connector Check trouble symptom NG Check the harness wire between the ignition coil and ignition switch connec tor and repair if necessary Repair Replace the engine ECU NG M Repair Check the harness wire between the ignition coil connecto
332. s have passed after engine was started Improper connector contact open circuit or Engine coolant temperature is approx 80 C or more short circuited harness wire Intake air temperature is 20 50 C Malfunction of the engine ECU Engine speed is approx 2 000 3 000 r min Vehicle is moving at constant speed on a flat level road surface Set conditions e The oxygen sensor front output voltage is around 0 6 V for 30 seconds does not cross 0 6 V for 30 seconds e When the range of check operations given above which accompany starting of the engine are carried out four time in succession a problem is detected after each operation NG Check the oxygen sensor front Refer to P 13A 196 __ _ Replace JOK 1 NG Measure at the oxygen sensor front connector C 46 Check the harness wire between the e Disconnect the connector and measure at the oxygen sensor front and the control harness side relay connector and repair ifnecessary 1 Voltage between 3 and earth Ignition switch ON 2 NG NG OK System voltage Check the following connector Repair 2 Continuity between 2 and earth C 39 OK Continuity 3 Continuity between 4 and earth 3 NG vo OK Continuity i OK Check trouble symptom Y NG NG Check the following connectors m gt Repair Y NG C 46 C 39 Check the harness wire between the
333. sensor connector side terminal 1 and terminal 2 Normal condition Accelerator pedal Continuity Depressed Non conductive Released Conductive 0 Q 3 If out of specification replace the throttle position sensor NOTE After replacement the idle position switch and throttle position sensor should be adjusted Refer to P 13A 184 IDLE POSITION SWITCH CHECK lt Vehicles with TCL gt 13100330286 1 Disconnect the accelerator pedal position sensor connector 2 Check the continuity between the accelerator pedal position sensor connector side terminal 3 and terminal 4 Normal condition Accelerator pedal Continuity Depressed Non conductive Q Released Conductive 0 Q 3 If out of specification replace the accelerator pedal position sensor NOTE After replacement the idle position switch and accelerator pedal position sensor should be adjusted Refer to P 13A 186 13A 196 MPI lt 6A1 gt On vehicle Service 6AFO366 MB991223 7FU0830 MB991223 7 7FU0831 OXYGEN SENSOR CHECK 13100510178 Oxygen sensor lt Oxygen sensor front gt ifets a AM X 1 Disconnect the oxygen sensor connector and connect Equipment side __ connector the special tool test harness to the connector on the oxygen sensor side Make sure that there is continuity 11 18 Q at 20 C between terminal 3 and terminal 4 on the oxygen sensor con
334. sor Engine Cranking reading is possible at 2 000 r min or less Tachometer Connected Engine speeds displayed on the MUT II and tachometer are identical Injectors Engine Cranking When engine coolant temperature is 0 C injection is carried out for all cylinders simultaneously 23 80 ms When engine coolant temperature is 20 C When engine coolant temperature is 80 C Injectors Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral A T P range Engine is idling 2 500 r min When engine is suddenly raced Increases Ignition coils and power transistors Engine After having warmed up Timing lamp is set The timing lamp is set in order to check actual ignition timing Engine is idling 1 15 BTDC 2 500 r min 23 43 BTDC 13A 166 Inspection item MPI lt 6A1 gt Troubleshooting Inspection contents Normal condition Inspection procedure No Reference page ISC stepper motor position Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral A T P range Idle position switch ON Engine Idling When A C switch is ON A C A C switch OFF 2 25 STEP A C switch OFF ON Increases by 10 70 steps A C switch OFF Select lever N range
335. speed sensor A C switch Injection timing correction resistor Injection rate correction resistor 4 Throttle solenoid valve 3 EGR solenoid valve Vacuum pump Alternator Air cleaner Throttle vi actuator 1 Solenoid type spill valve 5 Diesel fuel temperature sensor ie Pump i operation 6 inate ar Throttle valve ea emperature LL sensor EGR valve ei Turbocharger njection pump P 2 Timing control Waste gate actuator solenoid valve 3 Engine coolant temperature sensor 2 Crank angle sensor Oxidation catalyst DFUQ661 13E 4 SERVICE SPECIFICATIONS Items DIESEL FUEL Service Specifications Sealant Specifications 13300030069 Accelerator pedal position sensor adjusting voltage mV 530 570 Idle position switch 1 check voltage mV 875 925 Intake air temperature sensor resis At 20 C 2 3 3 0 tance kQ At 80 C 0 30 0 42 Engine coolant temperature sensor At 20 C 2 1 2 7 resistance kQ At 80 C 0 26 0 36 Resistance between accelerator pedal position sensor terminals 1 and 4 kQ 3 5 6 5 Solenoid type spill valve resistance Q 1 2 at 20 C Timing control solenoid valve resistance Q 8 12 at 20 C Diesel fuel temperature sensor resistance kQ 2 2 2 7 at 20
336. ss wire between the engine ECU and the vehicle B 65 0 56 C 53 speed sensor connector OK Na eo Ne Repair z Y R Seer Check trouble symptom NG Replace the engine ECU y Check the harness wire between the engine ECU and the vehicle speed sensor connector OK pne Repair Y Replace the engine ECU Check the following connector B 65 OK NG Repair Y Check trouble symptom NG Y Check the harness wire between the vehicle speed sensor and the earth and repair if necessary 13E 14 DIESEL FUEL Troubleshooting Code No 18 Pump operation sensor system open circuit Probable cause Range of Check e The injection pump operation speed computed from the crank angle sensor signal is 80 r min or more Set Conditions e No injection pump operation signal pump operation sensor signal is not during six successive crank angle sensor pulse signal inputs Malfunction of the pump operation sensor Open or short circuit in pump operation sensor circuit or poor connector contact Malfunction of the engine ECU NG Check the pump operation sensor Refer to P 13E 60 Replace the injection pump JoK NG Measure at the engine ECU connector C 53 __ Check the following connectors e Connect the connector C 53 B 63 e Voltage between 10 and 23 AC range OK JNa OK 0 2 1 0 V Engine idling 1 2 2 2 V Engine 2500 r min Repair Y JoK Replace the engine ECU
337. staken or if connector terminals are not correctly shorted to earth damage may be caused to the vehicle wiring sensors engine ECU and or ohmmeter Be careful to prevent this If the ohmmeter shows any deviation from the standard value check the corresponding sensor actuator and related electrical wiring and then repair or replace After repair or replacement recheck with the ohmmeter to confirm that the repair or replacement has corrected the problem Engine ECU Connector Terminal Arrangement Terminal No Check item 6AFO144 Normal condition Check condition 2 72 Timing control valve 8 12 Q At 20 C 4 72 Throttle solenoid valve 36 44 Q At 20 C 10 23 Pump operation sensor 215 245 Q At 20 C 16 72 EGR solenoid valve 11 14 Q At 20 C 19 Body earth Idle position switch 2 Continuity When accelerator lever is at idle position No continuity When accelerator lever is at slightly open 13E 48 DIESEL FUEL Troubleshooting Terminal No Check item Normal condition Check condition 26 Body earth Engine ECU earth Continuity 0 Q 33 46 Injection rate correction resistor 0 1 2 5 kQ At 20 C 34 46 Diesel fuel temperature sensor 2 2 2 7 kQ 35 46 Engine coolant temperature 5 1 6 5 kQ When engine coolant temperature is O C sensor 2 1 2 7 kQ When engine coola
338. steering fluid pres y sure switch connector Check trouble symptom 0K NG y Replace the engine ECU Replace the engine ECU Probable cause When an A C ON signal is input to the engine ECU the engine ECU carries out control of the idle speed control ISC servo and also operates the A C compressor magnetic clutch NG m gt Replace Check the A C compressor relay Refer to GROUP 55 On vehicle Service Malfunction of A C control system Malfunction of A C switch Improper connector contact short circuited harness wire Malfunction of the engine ECU open circuit or JoK NG Measure at the engine ECU connectors C 34 C 36 Check the A C system Refer to GROUP 55 Troubleshooting e Disconnect the connector and measure at the harness side e Voltage between 8 and earth and 45 and earth Ignition switch ON OK 0 3 V A C switch OFF OK NG System voltage A C switch ON m Check the following ___ __ Replace Short circuit between 8 and earth connectors C 34 C 36 Ignition switch ON A C switch ON OK OK A C compressor clutch turns on y Check trouble symptom NG y Replace the engine ECU 13A 50 MPI lt 4G6 gt Troubleshooting INSPECTION PROCEDURE 33 Ignition circuit system Probable cause The engine ECU interrupts the ignition coil primary current by turning the power transistor Malfunction of ignition switch
339. stem Malfunction of the air intake system Malfunction of the glow system Malfunction of the engine ECU No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 Yes OK NG Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items Glow plug glow plug relay Injection nozzle fuel filter Throttle body assembly Starter switch input signal Engine oil viscosity Injection pump Contamination water kerosene etc in fuel DIESEL FUEL Troubleshooting 13E 27 INSPECTION PROCEDURE 7 Poor startability when engine is cold or warm Probable cause Poor starting The cause is probably a malfunction of the control system injection pump fuel system Malfunction of the control system or air intake system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake system Malfunction of the engine ECU No MUT II Self Diagnosis code __ Carry out MUT II Data list check and Actuator test Are diagnosis codes output Refer to P 13E 38 42 Yes OK NG Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS Repair CODES Check the following items e Injection nozzle fuel filter Throttle body assembly Compression pressure Injection pump Contamination water kerosene etc in fuel INSPEC
340. system abnormal air fuel ratio poor compression pressure etc are suspected Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the injectors for operation sound gt OK Y NG Check the ignition timing Refer to GROUP 11B On vehicle Service OK Y MUT II Check if hesitation sag stumble or poor acceleration occur Refer to P 13A 156 INSPECTION PROCEDURE 44 OK Y Check the fuel pressure Refer to P 13A 189 OK Y Malfunction of the ignition system Malfunction of air fuel ratio control system Malfunction of the fuel supply system Poor compression pressure Clogged exhaust system Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 Check that the crank angle sensor is installed properly Check the following items Check the ignition coil spark plugs spark plug cables Check the injector operating sound at the rear bank Check the operation vacuum of the traction control TCL Check the operation of the throttle valve Check the vacuum tank and vacuum actuator Check the compression pressure Check the fuel filter or fuel line for clogging Broken air intake hose Clogged air cleaner 13A 142 INSPECTION PROCEDURE 19 Surge MPI lt 6A1 gt Troubleshooting P
341. tage between 25 body earth OK 10 V or more Check trouble symptoms NG OK y OK Check the harness between the engine Check the engine control relay control relay and TCL ECU Refer to GROUP 13A On vehicle NG Service Repair y NG Measure at TCL ECU connectors C 10 gt Check the harness between the TCL and C 11 ECU and the earth and repair if neces e Disconnect the connector and sary measure at the harness side e Continuity between 13 26 C 10 31 C 11 body earth OK Continuity OK Y NG Check the following connectors m Repair C 10 C 11 OK Y NG Check trouble symptoms gt Replace the TCL ECU 13H 18 Inspection Procedure 3 None of the TCL indicator lamps TCL OFF TCL illuminate Probable cause when the ignition switch is ON TCL Troubleshooting The main cause is an open circuit in the indicator circuit because of a burnt out indicator lamp bulb e Malfunction of harness or connector e Malfunction of TCL ECU e Malfunction of indicator lamp bulb OK gt No Do other warning lamps illuminate when Check the following connectors the ignition switch is at ON position C 131 C 135 D 03 Yes NG Repair y Yes MUT II Self Diag code Code No 27 TCL ECU power supply Is code No 27 output voltage circuit system Refer to P 13H 9 No
342. tch lt A T gt Ignition switch ON PorN PorN D 2 LorR D 2 LorR Procedure No 30 13A 64 Inspection item MPI lt 4G6 gt Troubleshooting Inspection contents Normal condition Inspection procedure No Reference page Injectors Engine Cranking When engine coolant temperature is 0 C injection is carried out for all cylinders simultaneously 12 19 ms When engine coolant temperature is 20 C When engine coolant temperature is 80 C 6 0 9 1 ms Injectors 4 Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral A T P range Engine is idling 1 6 2 8 ms 2 500 r min 1 4 2 6 ms When engine is suddenly raced Increases Ignition coils and power transistors Engine After having warmed up Timing lamp is set The timing lamp is set in order to check actual ignition timing Engine is idling 2 18 BTDC 2 500 r min 18 38 BTDC ISC stepper motor position Engine coolant temperature 80 95 C Lamps electric cooling fan and all accessories OFF Transmission Neutral A T P range Idle position switch ON Engine Idling When A C switch is ON A C compressor should be operating A C switch OFF 2 25 STEP A C switch OFF ON Increases by 10 70 steps A C switch OFF
343. tch connector 0K Check the ignition switch Refer to GROUP 54 Ignition Switch NG _ Check the following gt Repair connectors B 65 lt M T gt C 48 C 40 OK y Check trouble symptom NG M NG Check the harness wire between the engine ECU and the vehicle speed sensor connector m gt Repair 0K Replace the engine ECU NG Check the following connector B 65 lt M T gt m gt Repair OK Y Check trouble symptom OK Y Check the harness wire between the vehicle speed sensor and the earth and repair if necessary 13A 20 MPI lt 4G6 gt Troubleshooting Code No 25 Barometric pressure sensor system Probable cause Range of Check e Ignition switch ON e Excluding 60 seconds after the ignition switch is turned to ON or immediately after the engine starts e Battery voltage is 8 V or more Set conditions e Sensor output voltage is 4 5 V or more corresponding to a barometric pressure of 114 kPa or more for 4 seconds or e Sensor output voltage is 0 2 V or less corresponding to a barometric pressure of 5 33 kPa or less for 4 seconds Malfunction of the barometric pressure sensor Improper connector contact open circuit or short circuited harness wire of the barometric pressure sensor circuit Malfunction of the engine ECU NG m Repair
344. ted At this time use the MUT II to check if the timing is retarded compared to when the detonation sensor connector is connected res Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS CODES Check the detonation sensor system Refer to P 13A 120 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 31 Check the following items e Spark plugs e Check if foreign materials water alcohol etc got into fuel INSPECTION PROCEDURE 21 Dieseling Probable cause Fuel leakage from injectors is suspected e Fuel leakage from injectors Check the injectors for fuel leakage MPI lt 6A1 gt Troubleshooting INSPECTION PROCEDURE 22 Too high CO and HC concentration when idling 13A 143 Probable cause Abnormal air fuel ratio is suspected e Malfunction of the air fuel ratio control system Yes MUT II Self Diag code Are diagnosis codes displayed No y NG Check the ignition timing Refer to GROUP 11B On vehicle Service OK Y NG MUT II Data list 21 Engine coolant temperature sensor Refer to P 13A 163 OK Y NG MUT II Data list 13 Intake air temperature sensor Refer to P 13A 163 Ie MUT II Data list 25 Barometric pressure sensor Refer to P 13A 164 NG JoK NG MUT II Data list 59 Oxygen sensor rear Refer to P 13A 166 e Transmission 2nd gear lt M T gt L range
345. temperature of 40 C or less After this the sensor output voltage is 1 6 V or more for 5 minutes NG Check the engine coolant temperature _ Replace sensor Refer to P 13A 193 Malfunction of the engine coolant temperature sensor Improper connector contact open circuit or short circuited harness wire of the engine coolant temperature sensor circuit Malfunction of the engine ECU NG m Repair joK NG Measure at the engine coolant temper Check the following connector ature sensor connector B 33 C 39 e Disconnect the connector and OK measure at the harness side e Voltage between 1 and earth Check trouble symptom Ignition switch ON wate Ay OK 4 5 4 9 V Ne e Continuity between 2 and earth OK Continuity Check the harness wire between the engine ECU and the engine coolant NG m Repair OK temperature sensor connector JK Replace the engine ECU 7 OK Check the following connector Check trouble symptom B 33 Ne NG T Replace the engine ECU Repair 13A 116 MPI lt 6A1 gt Troubleshooting Code No 22 Crank angle sensor system Probable cause Range of Check Malfunction of the crank angle sensor e Engine is cranking Improper connector contact open circuit
346. th TCL gt 36 44 Q At 20 C 72 92 Intake air temperature sensor 5 3 6 7 kQ When intake air temperature is 0 C 2 3 3 0 kQ When intake air temperature is 20 C 1 0 1 5 kQ When intake air temperature is 40 C 0 30 0 42 kQ When intake air temperature is 80 C Engine coolant temperature sensor 5 1 6 5 kQ When coolant temperature is 0 C 2 1 2 7 kQ When coolant temperature is 20 C 0 9 1 3 kQ When coolant temperature is 40 C 0 26 0 36 kQ When coolant temperature is 80 C Idle position switch Continuity when throttle valve is at idle position No continuity when throttle valve is slightly open 91 Body earth Inhibitor switch lt A T gt Continuity when select lever is at P or N No continuity when select lever is at D 2 L or R MPI lt 6A1 gt Troubleshooting 13A 175 Analyzer _ Special patterns pickup ees er 6FU2689 Standard wave pattern INSPECTION PROCEDURE USING AN ANALYZER 13100930226 AIR FLOW SENSOR AFS Measurement Method 1 Disconnect the air flow sensor connector and connect the special tool test harness MB991709 in between All terminals should be connected 2 Connect the analyzer special patterns pickup to air flow sensor connector terminal 3 Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU termi
347. the connector and measure at the harness side 1 Voltage between 3 and earth Ignition switch ON 2 NG OK System voltage i gt 2 Continuity between 2 and earth OK Continuity OK y Measure at the engine ECU connector C 38 e Disconnect the connector and measure at the NG harness side e Voltage between 60 and earth Ignition switch ON OK System voltage OK M NG Check the following connectors C 46 C 38 m gt Repair OK Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the oxygen sensor front connector NG m gt Repair OK Y Replace the engine ECU Malfunction of the oxygen sensor Improper connector contact short circuited harness wire Malfunction of the engine ECU open front circuit or Check the harness wire between the oxygen sensor front and the control relay connector and repair if necessary NG Check the following connector C 40 m Repair OK Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the oxygen sensor front connector NG m Repair 0K Replace the engine ECU NG Check the following connector C 46 m Repair OK Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the oxygen sensor front connector and repair if neces sary
348. the engine is not started Example 2 Cause of problem Damaged rectifier or vortex generation column Wave pattern characteristics Unstable wave pattern with non uniform frequency However when an ignition leak occurs during acceleration the wave pattern will be distorted temporarily even if the air flow sensor is normal CAMSHAFT POSITION SENSOR AND CRANK ANGLE SENSOR Measurement Method 1 Disconnect the camshaft position sensor connector and connect the special tool test harness MB991223 and jumper wire in between All terminals should be connected Connect the analyzer special patterns pickup to camshaft position sensor terminal 2 Disconnect the crank angle sensor connector and connect the special tool test harness MD998478 in between Connect the analyzer special patterns pickup to crank angle sensor terminal 2 Alternate Method Test harness not available iP Connect the analyzer special patterns pickup to engine ECU terminal 88 When checking the camshaft position sensor signal wave pattern Connect the analyzer special patterns pickup to engine ECU terminal 89 When checking the crank angle sensor signal wave pattern Special patterns Pattern height Low Pattern selector Display Engine r min Idle speed 13A 74 MPI lt 4G6 gt Standard wave pattern Troubleshooting 2 engine revolutions 1 camshaft revolution The time cycle time T is BTDC w C
349. the immobiliz Check the harness wire between the engine ECU and the earth er ECU OK JNa NG Y Repair Repair Check the engine ECU power supply and earth circuit Refer to P 13E 34 INSPECTION PROCEDURE 21 DIESEL FUEL Troubleshooting 13E 25 INSPECTION PROCEDURE 3 The engine warning lamp does not illuminate right after Probable cause the ignition switch is turned to the ON position Because there is a burn out bulb the engine ECU causes the engine warning lamp Burn out bulb to illuminate for five seconds immediately after the ignition switch is turned to ON Defective warning lamp circuit If the engine warning lamp does not illuminate immediately after the ignition switch Malfunction of the engine ECU is turned to ON one of the malfunctions listed at right has probably occurred NG MUT II Data list Check the engine ECU power supply and earth circuit Refer to 11 Battery voltage Refer to 13E 39 P 13E 34 INSPECTION PROCEDURE 21 JoK OK Measure at the engine ECU connector C 55 __ Check the following connector e Disconnect the connector and measure at the harness side C 55 connector e Earth the terminal No 57 Of Ne OK The engine warning lamp illuminates Repair NS y Check a burn out bulb wick mous EN OK Ne yo Replace the engine ECU Replace P g Y NG Me
350. tion Operation Grove Box Grove Box Frame Side Cover and Corner Panel Removal and Installation Refer to GROUP 52A Instrument panel 1110112 00006181 Removal steps 1 Instrument panel lower passenger side bracket lt Ap 2 Upper bracket 3 TCL ECU 4 Lower bracket REMOVAL SERVICE POINT lt A gt UPPER BRACKET REMOVAL Loosen the dash wiring harness mounting nut Lower the dash wiring harness to the position where the upper bracket can be removed and the remove the upper bracket ee f INSPECTION 13600290015 j TCL ECU CHECK Refer to P 13H 23
351. tion nozzle Compression pressure Valve clearance Throttle body assembly Injection timing Air in fuel line Injection pump Probable cause The cause is probably a malfunction of the control system injection pump fuel system or air intake system Malfunction of the control system Malfunction of the injection pump Malfunction of the fuel system Malfunction of the air intake system Malfunction of the engine ECU No MUT II Self Diagnosis code Are diagnosis codes output Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES Carry out MUT II Data list check and Actuator test Refer to P 13E 38 42 OK NG Repair Check the following items e Throttle body assembly e Injection nozzle fuel filter e Injection pump 13E 30 INSPECTION PROCEDURE 13 Engine stops during idling DIESEL FUEL Troubleshooting Probable cause The cause is probably a malfunction of the control system injection pump air intake system or power supply system Malfunction of the control system Malfunction of the injection pump Malfunction of the EGR system Malfunction of the air intake system Malfunction of the engine ECU MUT II Self Diagnosis code Are diagnosis codes output No Yes Refer to P 13E 8 INSPECTION CHART FOR DIAGNOSIS CODES INSPECTION PROCEDURE 14 Engine output is too low Carry out MUT II Data list check a
352. tion of steering wheel sensor when the speed averages output by the left and right rear wheel speed sensors are Malfunction of TCL ECU 15 km h or more OK NG Measure at TCL ECU connector C 11 gt Check the following Repair e Ignition switch ON connector e Connector connected C 11 e Voltage between terminals 40 and 41 and the body earth OK OK Changes between approx 3 V and approx 0 5 V when the steering wheel is turned Check trouble symptom Ne NG NG Check the following connectors m gt Repair C 11 C 75 C 106 a Replace the TCL ECU NG Inspect the harness between the steering wheel sensor and the Repair TCL ECU JoK NG NG i Measure at steering wheel sensor connector C 106 Check the following _ Repair e Ignition switch ON connectors e Disconnect the connector and measure at the harness side C 131 C 132 C 61 e Continuity between terminal 2 and body earth C 106 OK System voltage JOK oK Check trouble symptom Ne Check the harness between the steering wheel sensor and the y NG ignition switch and repair if necessary Check the following connector m gt Repair C 106 OK Y Replace the steering wheel sensor Code No 45 Steering wheel sensor ST N circuit system Probable cause short circuit This diagnosis code is output if it is
353. tioner switch condition Based on this signal the fan controller controls the radiator fan and condenser fan speeds The more the average voltage at the terminal approaches 5 V the higher the fan speed become Malfunction of the fan motor relay Malfunction of the fan motor Malfunction of the fan controller Improper connector contact open circuit or short circuited harness wire Malfunction of the engine ECU NG NG Measure at the engine ECU connector C 33 e Disconnect the connector and measure at the harness side Voltage between 21 and earth Ignition switch ON OK 4 8 5 2 V Fan rotates at high speed Connect a jumper cable between 21 and earth Ignition switch ON OK Fan stops Check the harness wire between the engine ECU and the fan controller con nector m gt Repair JoK joK NG Check the following Repair connector C 33 OK Check trouble symptom NG AA Replace the engine ECU INSPECTION PROCEDURE 26 Check the radiator fan and condenser fan circuit Refer to GROUP 14 Troubleshooting Power supply system and ignition switch IG system Probable cause When an ignition switch ON signal is input to the engine ECU the engine ECU turns the control relay ON This causes battery voltage to be supplied to the engine ECU injectors and air flow sensor NG Check the control relay Ref
354. ts and turning the throttle position sensor body After adjusting tighten the bolts securely Turn the ignition switch to OFF If a diagnosis code is output while adjusting the throttle position sensor use the MUT II to erase the diagnosis code IDLE POSITION SWITCH AND ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT lt Vehicles with TCL gt 13100140049 1 Connect the MUT II to the diagnosis connector Insert a thickness gauge with a thickness of 0 5 mm in between the accelerator lever and throttle lever to a depth of approximately 3 mm NOTE If the thickness gauge is inserted more than 3 mm the accelerator lever opening angle will become greater than the set opening angle which will result in defective adjustment Turn the ignition switch to ON but do not start the engine MPI lt 6A1 gt On vehicle Service 13A 187 Accelerator pedal position sensor with built in idle Loosen the accelerator pedal position sensor mounting bolt and then turn the accelerator pedal position sensor counterclockwise as far as it will go Check that the idle position switch is ON at this position Slowly turn the accelerator pedal position sensor clockwise and find the point where the idle position switch turns off Securely tighten the accelerator pedal position sensor mounting bolt at this point Select Traction Control System on the MUT II Check the accelerator pedal position sensor output voltage Standard valu
355. ture for starting is not appropriate Malfunction of the ignition system Malfunction of the injector system Foreign materials in fuel Poor compression NG Check battery voltage when cranking gt OK 8 V or higher OK Y MUT II Check if uncompleted combustion occurs Refer to P 13A 153 INSPECTION PROCEDURE 40 OK Y NG Can any sound be heard from the injectors when cranking gt OK ee M F Yes Is starting good if the engine is cranked with the accelerator pedal _ _ slightly depressed No Y NG Check the ignition timing when cranking e OK Approx 5 BTDC OK Y Malfunction of the engine ECU Check the battery Refer to GROUP 54 Battery Check the injector system Refer to P 13A 120 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 41 NG Check ISC servo for op eration sound Refer to P 13A 199 Check the ISC servo sys tem Refer to P 13A 151 INSPECTION PROCE DURE 35 JOK e Clean the throttle valve area Refer to P 13A 184 e Check and adjust the fixed SAS Refer to P 13A 187 Check that the crank angle sensor is installed properly Check the following items e Check the ignition coil spark plugs spark plug cables Check if the injectors are clogged Check the compression pressure Check fuel lines for clogging e e e e Check
356. ty Check iit aa ators cee eae eran tela diese eee 193 Intake Air Temperature Sensor Check 193 Engine Coolant Temperature Sensor Check e a A EE T E EE area 193 Throttle Position Sensor Check 194 Accelerator Pedal Position Sensor Check lt Vehicles with TCL gt 0000e 194 Idle Position Switch Check lt Vehicles without TCL gt 195 Idle Position Switch Check lt Vehicles with TCL gt 000005 195 Oxygen Sensor Check 45 196 Injector Check 2 cece ee eee 197 Idle Speed Control ISC Servo Stepper Motor Check 00 cee ee eee ee 199 Purge Control Solenoid Valve Check 200 EGR Control Solenoid Valve Check 200 Ventilation Control Solenoid Valve Check lt Vehicles with TCL gt 000 201 Vacuum Control Solenoid Valve Check lt Vehicles with TCL gt 00 201 Vacuum Tank Check lt Vehicles with TCL gt 00 202 Vacuum Actuator Check lt Vehicles with TCL gt 00 202 Throttle Valve Operation Check lt Vehicles with TCL gt 00 202 Negative Pressure Check during Traction Control Operation lt Vehicles with TCL gt 203 Power Steering Air Control Valve Operation Check cere So in ee en Oe Bee 203 INJECTOR scree satece ae dea i tee 204 THROTTLE BODY 0cceeeeeees 207 13A 4 MPI lt 4G6 gt General Information MULTIPOINT FUEL I
357. uccession ignition switch transition to off counted as one time NG Check the throttle solenoid valve Refer to P 13E 60 OK Y NG Check the throttle actuator Refer to P 13E 61 OK Y NG Measure at the throttle solenoid valve connector B 49 e Disconnect the connector and measure at the harness side connector e Voltage between 2 and earth Ignition switch ON OK System voltage e JoK NG Measure at the engine ECU connector C 53 e Disconnect the connector and measure at the harness side connector e Voltage between 4 and earth Ignition switch ON OK System voltage OK Y Check the following connector C 53 OK NG Repair AA Check the vacuum hose routing NG Y Check the vacuum hose routing OK pne Repair Y Replace the engine ECU Malfunction of the throttle solenoid valve Open or short circuit in throttle solenoid valve circuit or poor connector contact Incorrect vacuum hose routing Malfunction of the throttle actuator m Replace m gt Replace Check the harness wire between the control relay and the throttle solenoid valve connector and repair if necessary Check the following connector B 49 OK pne Repair Y Check trouble symptom NG Y Check the harness wire between the engine ECU and the throttle solenoid valve connector and repair if necessary
358. unction of the EGR control solenoid valve system Poor compression Yes MUT II Self Diag code e Refer to P 13A 111 INSPECTION CHART FOR DIAGNOSIS Are diagnosis codes displayed CODES No Y NG Check the injectors for operation sound __ Check the injector system Refer to P 13A 120 INSPECTION OK PROCEDURE FOR DIAGNOSIS CODE 41 Y NG Check the ignition timing __ Check that the crank angle sensor is installed properly Refer to GROUP 11B On vehicle Service OK Y MUT II Check if hesitation sag stumble or poor acceleration occur Refer to P 18A 156 INSPECTION PROCEDURE 44 OK y Check the fuel pressure Refer to P 13A 189 OK Y Check the following items Check the ignition coil spark plugs spark plug cables Check the injector operating sound at the rear bank Check the operation vacuum of the traction control TCL Check the operation of the throttle valve Check the vacuum tank and vacuum actuator Check the EGR control system Check the compression pressure Check the fuel filter or fuel line for clogging INSPECTION PROCEDURE 16 The feeling of impact or vibration when accelerating Probable cause In cases such as the above the cause is probably that there is an ignition leak Malfunction of the ignition system accompanying the increase in the spark plug demand voltage during acceleration Yes MUT II Self Diag code e
359. used by the A T ECU and auto cruise control ECU as well as by the TCL ECU Malfunction of APS Malfunction of TCL ECU Malfunction of engine ECU Malfunction of harness or connector MUT II Data list 11 APS output Open and close the throttle lever OK Changes smoothly be tween 300 mV 5 500 mV OK NG NG Check the following connectors C 10 B 41 C 39 OK Y Check trouble symptom NG Y Replace the TCL ECU Measure the voltage at APS connector B 41 e Ignition switch ON e Disconnect the APS connector and measure at harness side e Measure at the harness side e Between terminal 1 and body earth OK 4 8 5 2 V m Repair OK Y NG Check the following con nectors B 41 C 39 NG m gt Repair OK Y Check trouble symptom NG Y Check the harness between the APS and the engine ECU and repair if necessary NG m gt Repair NG Check the APS Refer to P 13H 27 OK gt Replace OK Y Replace the engine ECU NG m gt Repair NG Measure the voltage at TCL _ Check the following con ECU connector C 10 nectors e Ignition switch ON C 10 C 51 B 41 e Disconnect the TCL ECU OK connector and measure at y the harness side e Between terminal 19 and Sheek Trouble symplon body earth NG OK
360. ut do not start the engine 3 Check the accelerator pedal position sensor output voltage Standard value 530 570 mV 4 Ifthe output voltage is outside the standard value range loosen the accelerator pedal position sensor mounting bolt and turn the accelerator pedal position sensor body to adjust After adjusting securely tighten the mounting bolt 5 Check the voltage at the point where idle position switch 1 turns from on to off Standard value 650 1 150 mV 6 Ifthe voltage is outside the standard value range replace the accelerator pedal position sensor assembly 13E 54 DIESEL FUEL On vehicle Service DFUQ684 7 8 9 Check the accelerator pedal position sensor output voltage when the accelerator pedal is fully depressed Standard value 4 000 4 690 mV NOTE If the voltage is outside the standard value range check whether there are any marks which show that idle position switch 2 has been moved If such marks can be found adjust the idle position switch 2 If no such marks can be found re adjust the output voltage of the accelerator pedal position sensor Turn the ignition switch to OFF Disconnect the MUT IL IDLE POSITION SWITCH 2 ADJUSTMENT PONDE 9 10 11 12 13300610010 NOTE 1 The idle position switch 2 should not be moved unnecessarily it has been precisely adjusted by the manufacturer 2 Ifthe adjustment is disturbed for any reason re adjust as f
361. vehicle Service Yes MUT II Self Diag code gt Are diagnosis codes displayed No Y NG Check the injectors for operation sound gt OK Y NG Check the ignition timing r Check that the crank angle sensor is installed properly OK Y MUT II Check if surge occurs Refer to P 13 57 INSPECTION PROCEDURE 44 OK Y Check the fuel pressure Refer to P 13A 85 OK Y Check the following items e Check the ignition coil spark plugs spark plug cables e Check the EGR control system INSPECTION PROCEDURE 20 Knocking Probable cause In cases as the above the cause is probably that the detonation control is defective e Defective detonation sensor or the heat value of the spark plug is inappropriate Yes e Inappropriate heat value of the spark plug MUT II Self Diag code Are diagnosis codes displayed Refer to P 13A 12 INSPECTION CHART FOR DIAGNOSIS CODES No No Does knocking occur when driving with the sensor disconnected At this time use the MUT II to check if the timing is retarded compared to when the detonation sensor connector is connected p Check the detonation sensor system Refer to P 13A 21 INSPEC TION PROCEDURE FOR DIAGNOSIS CODE 31 Jes Check the following items e Spark plugs e Check if foreign materials water alcohol etc got into fuel INSPECTION PROCEDURE 21 D
362. w 12 O ring 13A 212 MPI lt 6A1 gt Throttle Body lt Vehicles with TCL and auto cruise control system gt 6AE0385 Disassembly steps NOTE 1 Water hose 1 The fixed SAS and the speed adjusting screw are B4 2 Throttle position sensor correctly adjusted at the factory and should not be PA lt dq 3 Accelerator pedal position sensor removed 4 Idle speed control servo Stepper mo 2 If the fixed SAS should happen to have been tor removed carry out fixed SAS adjustment Refer to 5 O ring 13A 187 fare 6 Fast idle air valve 3 If the speed adjusting screw should happen to have 7 O ring been removed carry out speed adjusting screw 8 Throttle lever adjustment Refer to 13A 188 9 Throttle body 10 Fixed SAS 11 Speed adjusting screw 12 O ring MPI lt 6A1 gt Throttle Body 13A 213 CLEANING THROTTLE BODY PARTS 1 Clean all throttle body parts Do not use solvent to clean the following parts e Throttle position sensor e Accelerator pedal position sensor e Idle speed control body assembly If these parts are immersed in solvent their insulation will deteriorate Wipe them with cloth only 2 Check if the vacuum port or passage is clogged Use compressed air to clean the vacuum passage Accelerator pedal REASSEMBLY SERVICE POINTS position sensor 2 9ENO590 3 Idle position switch APS power supply APS output 9EN0591 4 1 pA lt ACCELERATOR PEDAL POSITION SENSOR APS INSTALLATIO
363. y as the throttle valve is opened slowly to the fully open position For vehicles without TCL check the continuity between terminal 3 idle position switch and terminal 4 earth of the TPS connector when the throttle valve is fully closed and fully open Normal condition Throttle valve condition Continuity Fully closed Continuity Fully open No continuity If there is no continuity when the throttle valve is fully closed turn the TPS body anti clockwise and then check again If there is an abnormality replace the TPS 13A 102 MPI lt 6A1 gt General Information MULTIPOINT FUEL INJECTION MPI lt 6A1 gt 13100010456 GENERAL INFORMATION The Multipoint Fuel Injection System consists of sensors which detect the engine conditions the engine ECU which controls the system based on signals from these sensors and actuators which operate under the control of the engine ECU The engine ECU carries out FUEL INJECTION CONTROL The injector drive times and injector timing are controlled so that the optimum air fuel mixture is supplied to the engine to correspond to the continually changing engine operation condi tions A single injector is mounted at the intake port of each cylinder Fuel is sent under pressure from the fuel tank by the fuel pump with the pressure being regulated by the fuel pressure regulator The fuel thus regulated is distributed to each of the injectors Fuel injection is normally ca
364. ystem Refer to P 13A 146 INSPECTION PROCEDURE 28 lt Vehicles without TCL gt Refer to P 13A 147 INSPECTION PROCEDURE 29 lt Vehicles with TCL gt Check the intake air temperature sensor system Refer to P 13A 113 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 13 Check the barometric pressure sensor system Refer to P 13A 119 INSPECTION PROCEDURE FOR DIAGNOSIS CODE 25 Check the engine coolant temperature sensor system Refer to P 13A 115 INSPECTION PROCEDURE FOR DIAGNO SIS CODE 21 Check the purge control solenoid valve system Refer to P 13A 151 INSPECTION PROCEDURE 36 Check the EGR control solenoid valve system Refer to P 13A 152 INSPECTION PROCEDURE 37 Check the oxygen sensor rear system Refer to P 13A 122 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 59 Check the oxygen sensor front system Refer to P 13A 112 IN SPECTION PROCEDURE FOR DIAGNOSIS CODE 11 OK Check the fuel pressure Refer to P 13A 189 Inspect the intake of air into the air intake system e Broken intake manifold gasket e Broken vacuum hose e PCV valve does not operate e Broken air intake hose Check the power steering fluid pressure switch sys tem Refer to P 13A 149 INSPECTION PROCE DURE 32 2 Check the injector for clog Check the A C switch and A C relay system Refer to P 13A 149 INSPE
365. zed with the MUT II tester display e When the engine is suddenly raced the drive time will be greatly extended at first but the drive time will soon match the engine speed When idling When racing A01P0202 13A 180 MPI lt 6A1 gt Troubleshooting Analyzer 7FUI203 Standard Wave Pattern Observation conditions Function Special patterns STEPPER MOTOR Measurement Method 1 Disconnect the stepper motor connector and connect the special tool test harness MD998463 in between 2 Connect the analyzer special patterns pickup to the stepper motor side connector terminal 1 red clip of special tool terminal 3 blue clip terminal 4 black clip and terminal 6 yellow clip respectively Alternate Method Test harness not available 1 Connect the analyzer special patterns pickup to engine ECU terminal 4 connection terminal 5 connection terminal 17 and connection terminal 18 respectively Pattern height High Pattern selector Display Engine condition When the engine coolant temperature is 20 C or below turn the ignition switch from OFF to ON without starting the engine While the engine is idling turn the A C switch to ON Standard wave pattern The wave pattern appears for an Point B Stepper motor control instant but soon Coil reverse electromotive t disappears force Approx 3 x 10V from the motor turning Immediately after starting the warm engine P

traction control (TCL)

Contents

Download Pdf Manuals

Related Search

Related Contents