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TROUBLESHOOTING

1. NOTICE Perform the test at normal operating fluid temperature 50 80 or 122 176 F 1 RANGE TEST IN NORM AND PWR PATTERN RANGES Shift into the D range and hold the accelerator pedal constant at the full throttle valve opening position Check the following 1 2 2 3 and 3 O D up shifts should take place AT2818 D Range and shift points should conform to those shown in the automatic shift schedule 45 R HINT e There is no O D up shift and lock up when the 2 coolant temp is below 53 C 127 F E When the coolant temp is below 60 C 140 F Slippage the shift point is lower than specified in the au Shock tomatic shift schedule EVALUATION Abnormal Noise 1 If there is 12 up shift Vibration e No 2 solenoid is stuck e 1 2 shift valve is stuck 2 If there is no 23 up shift e No 1 solenoid is stuck e 2 3 shift valve is stuck LOCK UP 3 If there is 3 up shift e 3 4 shift valve is stuck 4 If the shift point is defective e Throttle valve 1 2 shift valve 2 3 shift valve 3 4 shift valve etc are defective b Ifthe lock up is defective e Lock up solenoid is stuck e Lock up relay valve is stuck b In the same manner check the shock and slip at the 1 2 2 3 30 0 up shifts EVALUATION If the shock is excessive e Line pressure is too high e Accumulator is defective e Check ball is defective c Run a
2. 5 INSPECT 2 VEHICLE SPEED PULSE GENERATOR a Jack up the front wheel on one side 6 Connect ohmmeter between the terminals c Spin the wheel and check that the meter needle deflects from 0 to o Q 6 INSPECT NO 1 VEHICLE SPEED PULSE GENERATOR See page 73 7 INSPECT O D SWITCH Using an ohmmeter check the continuity of the terminals for each switch position 00814 35 AUTOMATIC TRANSAXLE TROUBLESHOOTING 8 INSPECT PARK NEUTRAL SWITCH Check that there is continuity between terminals Terminal BSEC MC 1485 00954 9 INSPECT ENGINE COOLANT TEMPERATURE SENSOR page EG 305 36 AUTOMATIC TRANSAXLE TROUBLESHOOTING 06 01 5 The object of this test is to check the overall performance of the transaxle and engine by measuring the stall speeds in the D and R ranges NOTICE e Perform the test at normal operation fluid temperature 50 80 C 122 176 e not continuously run this test longer than 5 seconds e ensure safety conduct this test in a wide clear level area which provides good traction e stall test should always be carried out in pairs One should observe the condition of wheels or wheel stoppers outside the vehicle while the other is performing the test MEASURE STALL SPEED a Chock the front and rear wheels b Connect a t
3. 11 AUTOMATIC TRANSAXLE TROUBLESHOOTING TROUBLESHOOTING Trouble occurring in the ECT can stern from one of three sources the engine the ECT electronic control unit or the transmission itself Before troubleshooting determine in which these three sources the problem lies and begin troubleshooting with the simplest operation gradually working up in order or difficulty BASIC TROUBLESHOOTING Before troubleshooting and first determine whether the problem is electrical or mechanical To do this just refer to the basic troubleshooting flow chart provided below If the cause is already known using the basic troubleshooting chart below along with the general troubleshooting chart on the following page should speed the procedure Bad Preliminary Check See page 14 Repair or Replace Read Diagnostic Code See page 18 Manual Shifting Test Mechanical System Tests See page 23 See page 36 3 25 K 0 Repair or Replace Matrix Chart page 46 901003 12 AUTOMATIC TRANSAXLE TROUBLESHOOTING GENERAL TROUBLESHOOTING NOTICE Refer to A241 E Automatic Transaxle Repair Manual Pub No RM291 U when mark appears in the column for page numbers 060 01 Problem Possible cause Fluid discolored or Fluid contaminated smells burnt Torque converter faulty Transaxle faulty Re
4. coast bake 81 coast modulator valve U D brake Y N A LE sm manua Torque converter a Lt x 49 ast modulator U D one way clutch No 1 one way clutch F Low Pressure relief valve Direct clutch C2 Forward clutch C Second brake B2 Oil strainer 47 48 AUTOMATIC TRANSAXLE TROUBLESHOOTING EN Page Electrical control system check 25 Parts ed Sio lt 51010 5 gt olojo 91810 55 5 lt 2 2 2 519 gt gt 5 9 5 gt gt gt amp 5 2 5 61 2 9 60 9 1 215181518 91917 2 O 6 N ee 1 Other than O D 1 LLLLIITE TL PEPPERELL we 22 0 E
5. 0 30 main switch OFF Vehicle moving 02 2 4 5 56 5 Standing still 0 2 ud Vehicle moving 0 2 2 4 5 5 5 00955 lt gt 33 AUTOMATIC TRANSAXLE TROUBLESHOOTING Terminal Measuring condition Voltage v 2 2 L range Except L range B B E BATT 00810 Wire Harness Side 2 INSPECT SOLENOID a Disconnect the connector from PCMT b Measure the resistance between 54 52 5 and ground Resistance 11 150 c Apply battery voltage to each terminal Check that an operation noise can be heard from the solenoid 001586 3 CHECK SOLENOID SEALS If there is foreign material in the solenoid valve there will be no fluid control even with solenoid operation Check No 1 No 2 solenoid and Transaxle converter clutch switch Apply 490 kPa 5 kg cm 71 psi of compressed air check that the solenoid valves do not leak the air 5805 e When supply battery voltage to the solenoids check that the solenoid valves open 34 AUTOMATIC TRANSAXLE TROUBLESHOOTING 4 INSPECT THROTTLE POSITION SENSOR Using an ohmmeter check the resistance between terminals 2 IDLIVTA VC Throttle valve condition IDL E Fully closed 0 2 0 8 Fully open 3 3 10 400812 Resistance
6. Is voltage between PC11AT terminals B K edal depressed e Faulty PCMT e Faulty transaxle ECU power source and ground faulty Throttle position sensor signal faulty e TT terminal wire open or short Brake signal fault 29 AUTOMATIC TRANSAXLE TROUBLESHOOTING Trouble No 3 No up shift to overdrive After warm up Road test while shifting manually with solenoid wire connector disconnected Is there overdrive up shift in the D range when shifting from L to 2 to D See Faulty transaxle Yes Connect solenoid wire connector and while driving does Tt terminal voltage rise from 0 V to 7 V in sequence 0 7 Faulty transaxle e Faulty solenoid there 10 14 between terminals 2 and E when the range 0 4 10 14 terminals L and when in the D range e Faulty neutral start switch circuit e Faulty neutral start switch Try another PCMT No e Faulty O D switch harness Faulty O D switch Is voltage between terminals OD2 and E1 as follows O D switch turn ON 10 14 V O D switch turn OFF V Yes Yes Try another PCMT Is voltage between terminals OD and E as follows Approx 5 V No Is voltage between PCMT terminals OD and E normal with the cruise control ECU connector pulled out No e Faulty PCMT e Faulty cruise control wire har
7. Shift cable out of adjustment Throttle cable out of adjustment Valve body faulty Solenoid valve faulty Transaxle faulty Adjust shift cable Adjust throttle cable Inspect valve body Inspect solenoid valve Disassemble and inspect transaxle Drag binding or tie up on 1 2 2 3 or 3 O D up shift Shift cable out of adjustment Valve faulty Transaxle faulty Adjust shift cable Inspect valve body Disassemble and inspect transaxle 13 AUTOMATIC TRANSAXLE TROUBLESHOOTING NOTICE Refer to A241 E Automatic Transaxle Repair Manual Pub No RM291 U when mark appears in the column for page numbers No lock up in 2nd Electronic control faulty Inspect electronic control or O D Valve body faulty Inspect valve body Solenoid valve faulty Inspect solenoid valve Transaxle faulty Disassemble and inspect transaxle Harsh down shift Throttle cable out of adjustment Adjust throttle cable Throttle cable and cam faulty Inspect throttle cable and cam Accumulator pistons faulty Inspect accumulator pistons Valve body faulty Inspect valve body Transaxle faulty Disassemble and inspect transaxle Inspect valve body Inspect solenoid valve Inspect electronic control Valve body faulty Solenoid valve faulty Electronic control faulty No down shift when coasting Throttle cable faulty V
8. other memory systems will be also canceled out The diagnostic code can be also canceled out by disconnecting the PCMT connector If the diagnostic code is not canceled out it will be retained by the PCMT and appear along with a new code in event of future trouble 2 After cancellation perform a road test to confirm that a normal code is now read on the O D OFF light 21 AUTOMATIC TRANSAXLE TROUBLESHOOTING TROUBLESHOOTING FLOW CHART HINT e f diagnostic code Nos 42 61 62 63 are output the overdrive OFF indicator light will begin to blink immediately to warn the driver However an impact or shock may cause the blinking to stop but the code will still be retained in the PCMT memory until canceled out e There is no warning for diagnostic code No 64 e Inthe event of a simultaneous malfunction of both No 1 and No 2 speed sensors no diagnostic code will appear and the fail safe system will not function However when driving in the D range the transmission will not up shift from first gear regardless of the vehicle speed AXOST 01 Diagnostic code 42 No 1 vehicle speed pulse generator circuitry Check continuity between PCMT connector SPD terminal and body ground See page 32 Substitute another PCMT Repair or replace No 1 vehicle speed pulse generator Check No 1 vehicle speed pulse generator See page Check wiring between PCMT and combination me
9. resistance of transaxle NG Replace transaxle converter clutch switch converter clutch switch valve connector and body valve ground Resistance 11 150 OK Check wiring between transaxle converter clutch switch valve and PC MT voros 23 AUTOMATIC TRANSAXLE TROUBLESHOOTING MANUAL SHIFTING TEST 01 Solenoid Wire zd HINT With this test it can be determined whether the trouble lies within the electrical circuit or is a chanical problem in the transaxle 1 DISCONNECT SOLENOID WIRE 2 INSPECT MANUAL DRIVING OPERATION Check that the shift and gear positions correspond with the table on next page HINT If the L 2 and D range gear positions are difficult to distinguish perform the following road test e While driving shift through the L 2 and D ranges Check that the gear change corresponds to the shift position e abnormality is found in the above test the problem lies in transaxle 3 CONNECT SOLENOID WIRE 4 CANCEL OUT DIAGNOSTIC CODE See page 20 AT5599 24 AUTOMATIC TRANSAXLE TROUBLESHOOTING REFERENCE Possible gear positions in accordance with solenoid operating conditions No 2 Position Positio No 2 Position EA EA x e on 3 5 Solenoid Valve Gear No 1 Q gt x gt gt NORMAL No 1 SOLENOI
10. 1 DIAGNOSIS SYSTEM DESCRIPTION 1 A self diagnosis function is built into the electrical control system Warning is indicated by the overdrive OFF indicator light HINT Warning and diagnostic codes can be read only when the overdrive switch is ON If OFF the overdrive OFF light is lit continuously and will not blink a If a malfunction occurs within the speed sensors No 1 or 2 or solenoids No 1 or 2 the overdrive OFF light will blink to warn the driver However there will be no warning of a malfunction with lock up solenoid 6 The diagnostic code be read by the number of blinks of the overdrive OFF indicator light when ter minals and are connected See page 25 c The throttle position sensor or brake signal are not indicated but inspection can be made by checking the voltage at terminal TT of the data link connector d The signals to each gear can be checked by measuring the voltage at terminal TT of the data link connector while driving 2 The diagnostic code trouble code is retained in memory by the PCMT and due to back up voltage is not canceled out when the engine is turned off sequently after repair it is necessary to turn the ignition switch off and remove the EFI fuse 1 5A or disconnect the PCMT connector to cancel out the diagnostic trouble code See page AX 19 HINT e Low battery voltage will cause faulty operation of the diagnosis system Therefore al
11. D No 2 SOLENOID BOTH SOLENOIDS MALFUNCTIONING MALFUNCTIONING MALFUNCTIONING Solenoid Valve Gear Solenoid Valve Gear ISolenoid Valve MN No 2 Position nm g a o Far X Malfunctions x gt x N T EE gt gt gt x x 9095 25 TROUBLESHOOTING ELECTRONIC CONTROL CIRCUIT AUTOMATIC TRANSAXLE 01 52 4 ae 1 108805 uonisoq 91310241 101213055 9 Q 3 419095 es nd paads YA L ON yams O O Aeneg Om UU gt 34011 dois YOUMS uon yams 1 Aejou 1811 35 01 26 AUTOMATIC TRANSAXLE TROUBLESHOOTING ELECTRONIC CONTROL COMPONENTS Throttle Position Sensor ce gt No 2 Vehicle gt Pulse Generator Park Neutral Switch D eS Transaxle Converter ee Clutch Switch Valve D No 2 Solenoid Valve No 1 Solenoid Valve No 1 Vehicle Speed Pulse Generator O D OFF Indicator Light O D Main Switch AT6013 AT6295 27 AUTOMATIC TRANSAXLE TROUBLESHOOTING TROUBLESHOOTING FLOW CHART Trouble No 1 No shifting Warm up engine Coolant temp 80 C 176 F ATF temp 50 80 Connect a voltmeter to check connector terminals TT
12. If the distance is not standard adjust the cable by the adjusting nuts 5 INSPECT AND ADJUST SHIFT CABLE When shifting the shift lever from the position to other tions check that the lever can be shifted smoothly and accurately to each position and that the tion indicator correctly indicates the position If the indicator is not aligned with the correct position carry out the following adjustment procedure a Remove the No 1 engine under cover CLOS36 6 Loosen the swivel nut on manual shift lever 6928 c Push the manual shift lever fully toward the right side of the vehicle d Return the lever two notches to NEUTRAL position e Set the shift lever to N f While holding the lever lightly toward the R range side tighten the swivel nut g Install the No 1 engine under cover VS LUN 5730 16 AUTOMATIC TRANSAXLE TROUBLESHOOTING 6 ADJUST PARK NEUTRAL SWITCH Neutral If the engine will start with the shift selector in any range other than N or P range adjustment is required a Loosen the park neutral switch bolts and set the shift selector to the N range b Align the groove and neutral basic line c Hold in position and tighten the bolts Torque 5 4 55 kgf cm 48 7 INSPECT IDLE SPEED N RANGE Idle speed 800 rpm Groove 17 AUTOMATIC TRANSAXLE TROUBLESHOOTING O D OFF y Ag 065 0
13. achometer to the engine c Fully apply the parking brake d Keep your left foot pressed firmly on the brake pedal e Start the engine f Shift into the D range Step all the way down on the accelerator pedal with your right foot Quickly read the stall speed at this time Stall speed 2 650 150 rpm g Perform the same test in R range EVALUATION a If the stall speed is the same for both ranges without the rear wheels rotating but lower than specified value e Engine output may be insufficient e Stator one way clutch is not operating properly 6 If the stall speed range is higher than specified Line pressure too low e Forward clutch slipping e No 2 one way clutch not operating properly e Underdrive one way clutch not operating properly c If the stall speed in R range is higher than specified Line pressure too low e Direct clutch slipping e First and reverse brake slipping e Underdrive brake slipping d If the stall speed in both R and D ranges are higher than specified Line pressure too low e Improper fluid level e Underdrive brake slipping 37 AUTOMATIC TRANSAXLE TROUBLESHOOTING ATS919 38 AUTOMATIC TRANSAXLE TROUBLESHOOTING TIME LAG TEST When the shift lever is shifted while the engine is idling there will be a certain time lapse or lag before the shock can be felt This is used for checking the condition of the underdrive clutch forward clutch direc
14. alve body faulty Transaxle faulty Solenoid valve faulty Electronic control faulty Inspect throttle cable Inspect valve body Disassemble and inspect transaxle Inspect solenoid valve 33 Inspect electronic control Down shift occurs too quickly or too late while coasting Inspect solenoid valve Inspect electronic control Inspect valve body Adjust throttle cable O D 3 3 2 or 2 1 kick down Solenoid valve faulty Electronic control faulty Valve faulty Throttle cable out of adjustment Inspect solenoid valve Inspect electronic control Inspect valve body Disassemble and inspect transaxle Solenoid valve faulty Electronic control faulty Valve bogy faulty Transaxle faulty No engine braking in 2 or L range Shift cable out of adjustment Adjust shift cable 15 Parking lock pawl and spring faulty Inspect cam and spring Vehicle does not hold in P range 00 87 14 AUTOMATIC TRANSAXLE TROUBLESHOOTING 5940 417 AT5924 PRELIMINARY CHECK 1 CHECK TRANSAXLE FLUID LEVEL HINT The vehicle must have been driven so that the engine and transaxle are at normal operating tem perature fluid temperature 70 80 C or 158 176 F a Park the vehicle on a level surface set the parking brake b With the engine idling and the brake pedal depressed shift the shift lever into each gear f
15. and E1 Does TT terminal voltage vary with Yes No Is voltage between PCMT terminals B K and E as follows No Brake signal faulty ECU power source and ground faulty e Throttle position sensor signal faulty TT terminal wire open or short Disconnect solenoid wire connector and road test Does the transaxle operate in the respective gear when in the following ranges while driving Manual Shifting Test See page 23 D range Overdrive 2range 3rd gear Lrange 1st gear N 9 Transaxle faulty Yes 0 gt 7 Transaxle faulty e Connect solenoid wire connector and road test Solenoid faulty Does TT terminal voltage rise from 0 V to 7 V in sequence 0 4 Proceed to trouble 3 page 29 there 10 14 V between PCMT terminals 2 E1 when in the D range No Are 10 14 V between PCMT terminals L E1 when in the D range Neutral start switch circuit faulty Neutral start switch faulty Try another PCMT 28 AUTOMATIC TRANSAXLE Trouble No 2 Shift point too high or too low Warm up engine Coolant temp 80 C 176 F ATF temp 50 80 C 122 176 F Connect a voltmeter to check connector terminals Tt and El Does TT terminal voltage vary with changes in throttle opening Seepage 1 7 No and E as follows 0 V Brake pedal released 10 14 V Brake Yes TROUBLESHOOTING
16. ator control Valve ard clutch CI ast brake B ar planetary gear orque converter 3 shift valve 4 shift valve accumulator gt Direct clutch lectrical control system Low coast modulator valve Parking lock pawl Manual valve 1 2 shift valve 2 gt Does not move in any forward Does not move in reverse 4 ange Q eve pet pep me mao po brake Be 1 3 4shi Accumul No down shift 11111 11 1 Up shifts 3rd O D Harsh engagement fet TT LLL JC 1 o pd I I s PP PEE II 0002 ERE gs EREZESESERNNEREESESENEYEUEREE Eo E cuu uL 22020100 2 accumulator EN Page 1st 22nd d O D 2nd 3rd 3rd 2O D 2nd pou TN Atter warm up E HIDE ire atte M AUTOMATIC TRANSAXLE TROUBLESHOOTING ccumulator and reverse brake accumulator accumulator 10 lt E o gt o o 9 2 accumulator U D clutch Accumulator control valve
17. ehicle place Parking Lock Acting Vehicle on Gradient P R N D 2 L 45 AUTOMATIC TRANSAXLE TROUBLESHOOTING AUTOMATIC SHIFT SCHEDULE Throttle valve fully open Fully closed km h mph 320 0 320 0 003 0 3 53 59 98 109 11 143 44 50 D range 33 37 61 88 01 39 27 31 2 53 59 42 49 33 37 26 30 47 53 Throttle valve opening 5 km h mph Lock up ON Lock OFF OFF 125 137 93 104 42 48 78 85 58 65 26 30 2 64 71 59 65 range 40 44 37 40 V01060 HINT 1 In the 2 and L ranges all stages lock up is OFF 2 In the following cases the lock up will be released regardless of the lock up pattern When the throttle is completely closed e When the brake switch is ON 3 Shift up to O D will not occur when the engine coolant temp is below 53 C 127 F 46 AUTOMATIC TRANSAXLE TROUBLESHOOTING TROUBLE SHOOTING MATRIX CHART You will find the troubles easier using the table will shown below In this table each number 073 01 shows the priority of cause troubles Check each part order if necessary replace these parts 21 Ea cad 21 mu ES EN Page way clutch F2 anetary gear way clutch F ake B2
18. g simultaneously indication will began from the smaller value and continue to the larger 4 REMOVE SST 0 5 seconds 2 5 seconds For seconds 4 5 seconds 1 5 seconds Repeat 0713 19 AUTOMATIC TRANSAXLE TROUBLESHOOTING DIAGNOSTIC CODES _________ mut Defective 1 speed sensor in combination meter severed wire harness or short circuit Defective 2 speed sensor in severed wire harness or short circuit 62 Severed No 1 solenoid or short circuit severed wire harness or short circuit 63 Severed No 2 solenoid or short circuit severed wire harness or short circuit 64 Severed lock up solenoid or short circuit severed wire harness or short circuit HINT If codes 62 63 or 64 appear there is an electrical malfunction in the solenoid Causes due to mechanical failure such as a stuck valve will not appear 4 x AT2020 v00775 20 AUTOMATIC TRANSAXLE TROUBLESHOOTING 6019 CANCEL OUT DIAGNOSTIC CODE 1 After repair of the trouble area the diagnostic code retained in memory by the PCMT must be canceled by removing the EFI fuse 1 5A for 10 seconds or more depending on ambient temperature the lower the temperature the longer the fuse must be left out with the ignition switch OFF HINT Cancellation can be also done by removing the battery negative terminal but in this case
19. k the voltage read ing from the TT terminal Brake pedal depressed 0 V Brake pedal released If not as indicated there is a malfunction in either the stop light switch or circuit 3 INSPECT EACH UP SHIFT POSITION a Warm up the engine Coolant temperature 80 C 176 F b Turn the O D switch to ON c Place the pattern select switch in Normal and the shift lever into the D range d During a road test about 10 km h or 6 mph check that voltage at the TT terminal is as indicated below for each up shift position If the voltage rises from 0 V to 7 V in the sequence shown the control system is okay The chart on the left shows the voltmeter reading and corresponding gears HINT Determine the gear position by alight shock or change in engine rpm when shifting 32 AUTOMATIC TRANSAXLE TROUBLESHOOTING ELECTRONIC CONTROL COMPONENTS INSPECTION 1 INSPECT VOLTAGE OF PCMT a Turn on the ignition switch b Measure the voltage at each terminal 51417 141518 Terminal Measuring condition Voltage V 2 9 E Ignition switch turned ON BEEN I eee Brake pedal is depressed 7 5 14 STP E Brake pedal is released THW E Coolant temp 80 C 176 F IDL Throttle valve fully closed 0 3 0 8 E Throttle valve open 3 2 4 9 1 O D switch turned OFF O D switch OFF
20. ness Yes C Faulty cruise control ECU 30 AUTOMATIC TRANSAXLE Trouble No 4 No lock up After warm up Warm up engine Coolant temp 80 C 1 76 F ATF temp 50 80 122 176 Road test Connect a voltmeter to check connector terminals TT and E Is there 7 V in the lock up range while driving Is voltage between PCMT B K and E terminals as follows Brake pedal depressed 10 14 V Brake pedal released 0 V Yes Faulty ECU power source and ground e Faulty throttle position signal TROUBLESHOOTING e Lock up solenoid stuck e Faulty transaxle e Faulty lock up mechanism Yes No Faulty brake signal voya Terminal Voltage TT AX 31 AUTOMATIC TRANSAXLE TROUBLESHOOTING gt Close Throttle Valve Opening Angle Open 27131 Terminal Gear position AT6298 TERMINAL VOLTAGE INSPECTION 1 INSPECT THROTTLE POSITION SENSOR SIGNAL a Turn the ignition switch to ON Do not start the engine 6 Connect a voltmeter to check connector terminals TT and E1 c While slowly depressing the accelerator pedal check that TT terminal voltage rises in sequence If the voltage does not change in proportion to the throttle opening angle there is a malfunction in the throttle position sensor or circuit 2 INSPECT BRAKE SIGNAL a Depress the accelerator pedal until the TT terminal indicates 8 V b Depress the brake pedal and chec
21. place fluid Replace torque converter Disassemble and inspect transaxle Vehicle does not move in any forward range or reverse Shift cable out of adjustment Valve body or primary regulator faulty Parking lock pawl faulty Torque converter faulty Converter drive plate broken Oil strainer intake screen blocked Transaxle faulty Adjust shift cable Inspect valve body Inspect parking lock pawl Replace torque converter Replace drive plate Clean screen Disassemble and inspect transaxle Shift lever position incorrect Shift cable out of adjustment Manual valve and lever faulty Transaxle faulty Adjust shift cable Inspect valve body Disassemble and inspect transaxle Throttle cable out of adjustment Valve body or primary regulator faulty Accumulator pistons faulty Transaxle faulty Harsh engagement into any drive range Adjust throttle cable Inspect valve body inspect accumulator pistons Disassemble and inspect transaxle Delayed 1 2 2 3 or 3 O D up shift or down shifts from O D 3 3 2 and shift back to O D or 3 Slips on 1 2 2 3 or 3 up shift or slips or shudders on acceleration Electronic control faulty Valve body faulty Solenoid valve faulty Throttle cable out of adjustment Inspect electronic control Inspect valve body Inspect solenoid valve Adjust throttle cable
22. rom the P range to L range smoothly and return to P range HINT Depress the brake pedal c Pull out the transaxle dipstick and wipe it clean d Push it back fully into the tube e Pull it out and check that the fluid level is in the HOT range If the level is at the low side of the hot range add fluid Fluid type ATF NOTICE Do not overfill 2 CHECK FLUID CONDITION If the fluid smells burnt or is black replace it 3 REPLACE ATF NOTICE Do not overfill a Remove the drain plug gasket and drain the fluid b Install a new gasket and the drain plug securely c Add new fluid through the filler tube Fluid ATF Capacity 8 0 liters 8 5 US qts 7 0 Imp qts Drain and refill 3 3 liters 3 5 US qts 2 9 Imp qts d Start the engine and shift the selector into all posi tions from P through L and then shift into P e With the engine idling check the fluid level Add fluid up to the COOL level on the dipstick 15 AUTOMATIC TRANSAXLE TROUBLESHOOTING f Check the fluid level with the normal fluid temperature 158 176 F or 70 80 C add as necessary NOTICE Do not overfill AT3417 4 INSPECT AND ADJUST THROTTLE CABLE a Check that the throttle valve is fully closed 6 Check that the inner cable is not slack c Measure the distance between the outer cable end and stopper on the cable Standard boot and cable stopper distance 0 1 mm 0 0 04
23. should observe the conditions of wheels or wheel stoppers outside the vehicle while the other is performing the test MEASURE LINE PRESSURE speed reaches stall speed f In the same manner perform the test in R range Line pressure kPa kg cm2 psi range Idling Stall Idling Stall A241 373 422 716 863 637 794 1 334 1 579 i 3 8 4 3 54 61 7 3 8 8 104 125 6 5 8 1 92 115 13 6 16 1 193 229 VOS If the measured pressures are not up to specified value recheck the throttle cable adjustment and perform a retest EVALUATION a If the measured values at all ranges are higher than specified e Throttle cable out of adjustment e Throttle valve defective e Regulator valve defective b If the measured values at all ranges are lower than specified e Throttle cable out of adjustment e Throttle valve defective Regulator valve defective e Oil pump defective e Underdrive one way clutch not operating properly c If pressure is low in the D range only Drange circuit fluid leakage e Forward clutch defective Underdrive one way clutch not operating properly d If pressure is low in the R range only e R range circuit fluid leakage 41 AUTOMATIC TRANSAXLE TROUBLESHOOTING e Direct clutch defective e First and reverse brake defective e Underdrive clutch not operating properly 42 AUTOMATIC TRANSAXLE TROUBLESHOOTING ROAD TEST 71 01
24. t D range lock up or O D gear and check for abnormal noise and vibraton HINT The check for the cause of abnormal noise and vibration must be made with extreme care as it could also be due to loss of balance in the drive shaft tire torque converter etc 221 AT3069 43 AUTOMATIC TRANSAXLE TROUBLESHOOTING b e E gt c 070 4 While running the D range 2nd 3rd and O D gears check to see that the possible kick down vehicle speed limits for 2 1 3 2 and O D 3 kick downs conform to those indicated on the automatic shift schedule See page 45 e Check for abnormal shock and slip at kick down FNOZA T T f Check for the lock up mechanism 1 Drive in D range O D gear at a steady speed lock up ON of about 64 71 km h 40 44 mph 2 Lightly depress the accelerator pedal and check that the engine rpm does not change abruptly If there is a big jump in engine rpm there is no lock up 20035 2 2 5 Shift into the 2 range and while driving with the accelerator pedal held constantly at the full throttle valve opening position push in one of the pattern selectors and check on the following points a Check to see that the 1 2 up shift takes place and that the shift point conforms to it shown on the automatic shift schedule See page 45 AT2812 HINT e prevent overrun the transmission shifts up into 3rd gear a
25. t around 109 km h 68 mph e In range 2 there will be no lock up to 2nd gear 6 While running in the 2 range and 2nd gear release the accelerator pedal and check the engine braking effect EVALUATION If there is no engine braking effect e Second coast brake is defective AT2811 c Check for abnormal noise at acceleration and decel eration and for shock at up shift and down shift 2 Range KE Abnormal Noise 0 0 Shock 69 CTNOZA T 2809 44 AUTOMATIC TRANSAXLE TROUBLESHOOTING 3 L RANGE TEST No Up Shift a While running in the L range check to see that there is no up shift to 2nd gear HINT To prevent overrun the transmission up P R E shifts into 2nd gear at around 59 km h 37 mph 2 L L Range AT2808 b While running in the L range release the accelerator L Range pedal and check the engine braking effect P EVALUATION If there is no engine braking effect Q e First and reverse brake is defective Engine Braking c Check for abnormal noise during acceleration and deceleration Abnormal Noise FNOZA T 4 5 Shift into R range and while starting at full throttle Full Open PT check for slipping Slippage 5 P RANGE TEST Stop the vehicle on a gradient more than 57 and after shifting into the P range release the parking brake 25 Then check to see that the parking lock pawl holds the gt v
26. t clutch and first and reverse brake NOTICE e Perform the test at normal operating fluid temperature 50 80 C 122 176 e Be sure to allow one minute interval between tests e three measurements and take the average value MEASURE TIME LAG a Fully apply the parking brake b Start the engine and check the idle speed Idle speed N range 700 150 rpm c Shift the shift lever from N to D position Using a stop watch measure the time it takes from shifting the lever until the shock is felt Time lag Less than 1 2 seconds d In the same manner measure the time lag for N to R Time lag Less than 1 5 seconds EVALUATION a If ND time lag is longer than specified Line pressure too low e Forward clutch worn e No 2 and underdrive one way clutch not operating properly b If NR time lag is longer than specified Line pressure too low e Direct clutch worn First and reverse brake worn Underdrive brake worn 39 AUTOMATIC TRANSAXLE TROUBLESHOOTING Ps Noise Shock Noise np 2 111 40 AUTOMATIC TRANSAXLE TROUBLESHOOTING 070 01 HYDRAULIC TEST PREPARATION a Warm up the transaxle fluid b Remove the transaxle case test plug and connect the hydraulic pressure gauge SST 09992 00094 Oil pressure gauge CAUTION e Perform the test at normal operating fluid temperature 50 0 C or 122 176 F e The line pressure test should always be carried out in pairs One
27. ter Diagnostic code 61 No 2 vehicle speed pulse generator circuitry Check continuity between PCMT connector SP2 terminal and body ground See page 32 Substitute another PCMT Repair or replace No 2 vehicle speed pulse generator Check No 2 vehicle speed pulse generator See page AX 34 Check wiring between PCMT and No 2 vehicle speed pulse generator V01004 22 AUTOMATIC TRANSAXLE TROUBLESHOOTING Diagnostic code 62 No 1 solenoid circuitry NG Check resistance of No 1 solenoid valve at PCMT connector See page 33 OK Substitute another PCMT NG Remove the oil pan and check resistance of No 1 Replace No 1 solenoid valve solenoid valve connector and body ground Resistance 11 150 Check wiring between No 1 solenoid valve and PCMT Diagnostic code 63 No 2 solenoid valve circuitry Check resistance of No 2 solenoid valve at PCMT connector See page 33 OK Substitute another PCMT NG Remove the oil pan and check resistance of No 2 Replace No 2 solenoid valve solenoid valve connector and body ground Resistance 11 150 Check wiring between No 2 solenoid valve and PC MT Diagnostic code 64 Transaxle converter clutch switch valve circuitry NG heck resistance of transaxle converter clutch switch valve at PCMT connector See page 33 OK Substitute another PC MT Remove the oil pan and check
28. ways check the battery first e Use a voltmeter and ohmmeter that have im pedance of at least 10 CHECK O D OFF INDICATOR LIGHT 1 Turn the ignition switch ON 2 The O D OFF light will come on when the O D switch is placed at OFF 3 When the O D switch is set to ON the O D OFF light should go out If the O D OFF light flashes when the O D switch is set to ON the electronic control system is faulty 18 AUTOMATIC TRANSAXLE TROUBLESHOOTING READ DIAGNOSTIC CODE 1 TURN IGNITION SWITCH AND O D SWITCH TO ON Do not start the engine HINT Warning and diagnostic codes can be read only when the overdrive switch is ON If OFF the overdrive OFF light will light continuously and will not blink AT6298 2 CONNECT TE AND E1 TERMINALS OF DATA LINK CONNECTOR Using SST connect terminals TE and E1 of the datalink connector SST 09843 18020 3 READ DIAGNOSTIC CODE Read the diagnostic code as indicated by the number of times the O D OFF light flashes Diagnostic Code Indication e fthe system is operating normally the light will flash 2 times par second e nthe event of a malfunction the light will flash 1 time par second The number of blinks will equal the first number and after 1 5 seconds pause the second number of the two digit diagnostic code If there are two or more codes there will be 0216 2 5 seconds pause between each HINT In the event of several trouble codes occurrin

TROUBLESHOOTING

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