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3173 import computer code reader (front cover)

1. 43 85 94 With ignition off remove 15A EFT fuse for 30 seconds 85 With ignition off remove negative battery cable for 30 conds With ignition off remove 15A ECU B fuse for 30 seconds 87 93 With ignition off remove 15A EFT fuse for 30 seconds 86 95 With ignition off remove 15A EFT fuse for 30 seconds 87 91 With ignition off remove 15A Stop fuse for 30 seconds 92 95 With ignition off remove 15A EFT fuse for 30 seconds 83 89 With Super Monitor Display With ignition off remove 15A EFT fuse for 30 seconds 87 88 With ignition off remove 15A EFT fuse for 30 seconds 89 92 With ignition off remove 20A EFT fuse for 30 seconds 85 87 With ignition off remove 7 5A AM2 fuse for 30 seconds 88 95 With ignition off remove 15A EFT fuse for 30 seconds 88 94 With ignition off remove 15A EFT fuse for 30 seconds 92 95 With ignition off remove 15A EFT fuse for 30 seconds Chapter 5 Toyota Lexus ERASING CODES Toyota Erasing Procedures Cont Model Years Procedure Pickup 85 88 With ignition off remove 15A EFT fuse for 30 seconds With ignition off remove 15A Haz Horn fuse for 30 seconds 90 94 With ignition off remove 15A EFT fuse for 30 seconds 91 95 With ignition off remove 15A EFT fuse for 30 seconds 15A EFT fuse for 30 seconds T100 With ignition off remove 15A
2. 4 sensor engine speed RPM Crank angle sensor or circuit ECU sensor MAP sensor circuit MAP sensor or circuit mechanical problem ECT sensor circuit ECT sensor or circuit automatic transaxle control unit 7 TPS Angle Sensor TPS sensor or circuit automatic transaxle control unit CKP sensor engine speed RPM Crank angle sensor or circuit ECU sensor 11 Idle Mixture Adjuster Sensor Idle mixture adjuster sensor or circuit 12 EGR system fault No EGR action faulty EGR valve 13 BARO sensor circuit BARO sensor or circuit 14 Idle Air Control valve circuit ECU Open or shorted out ignition sig nal circuit No signal to ECU Ignition Output signal Open or shorted ignition output signal circuit Fuel Injector Circuit Open or shorted fuel injector circuit 17 VSS circuit VSS sensor or circuit Ignition Timing Adjuster Open or shorted signal circuit 19 A T Lock up control solenoid Open or shorted signal circuit Lock up control solenoid lock up solenoid 20 Electrical Load Detector Sensor Electrical load detector or circuit 21 Chapter 3 Honda Acura Fault Code Definitions 21 59 spool solenoid valve pressure switch valve timing oil pressure switch Oxygen sensor heater left side Oxygen sensor heater or circuit Oxygen sensor heater right side Oxygen sensor heater or circuit 43 Fuel Supply system left side Oxygen sensor or circuit fuel system 44 Fuel Supply syst
3. At gear engagement Mostly driving rough roads Q With A C operating DRIVING HABITS Mostly city driving Highway A Park vehicle inside A Park vehicle outside Drive less than 10 miles per day Drive 10 to 50 miles per day Drive more than 50 miles per day Ooo GASOLINE USED O 87 Octane 91 Octane 89 Octane More than 91 Octane WEATHER CONDITIONS WHEN PROBLEM OCCURS A 32 55 F 0 13 C A Above 55 F 13 C Below freezing 32 F 0 C CHECK ENGINE LIGHT DASH WARNING LIGHT Sometimes ON C Always ON Never ON PECULIAR SMELLS Hot Gasoline Sulfur rotten egg Burning oil Burning rubber Electrical STRANGE NOISES Rattle Squeak A Knock Other Chapter 1 8 About Import Vehicle Diagnostic Systems AUTOMOTIVE COMPUTER CONTROL SYSTEMS AUTOMOTIVE COMPUTER CONTROL SYSTEMS The main purpose of the vehicle s Computer Control System is to provide maximum engine performance with the least amount of air pollution and the best fuel efficiency possible The Computer Control System consists of the on board computer and several related control devices sensors switches and actuators Most on board computers are located inside the vehicle behind the dashboard under the passenger s or driver s seat or behind the passenger side kick panel Some manufacturers may still position it in the engine compartment The sensors switches and actuators are devices such
4. Example blink pause blink blink blink code 13 T9 If more than one code is stored codes are separated by a 2 5 second pause When all codes have been displayed there is a 4 5 second pause then the codes are repeated Codes will continue to cycle as long as the ignition is on and the Code Reader is connected Lexus Code Retrieval Procedures Tool Years aeq Perform the following Procedure Locate rectangular diag nostic connector under hood T7 Plug Code Reader into diagnostic connector Turn ignition on Observe Check Engine light for codes Chapter 5 40 Toyota Lexus CODE RETRIEVAL PROCEDURE Lexus Code Retrieval Procedures Cont Tool Years 97 Perform the following Codes Codes are displayed using a series of blinks and pauses Example blink pause blink blink blink code 13 T9 If more than one code is stored codes are separated by a 2 5 second pause When all codes have been dis played there is a 4 5 second pause then the codes are repeated Codes will con tinue to cycle as long as the ignition is on and the Code Reader is connected Diagnostic Connector Locations The physical locations of diagnostic connectors for Toyota Lexus vehicles are shown in Figures T5 through T7 Refer to the code retrieval instructions in Table T1 Toyota or Table T2 Lexus to determine the correct location for your vehicle SELECT INPUT SET SUPER MONITOR 41 Chapter 5 T
5. Nissan nfiniti FAULT CODE DEFINITIONS 53 111 Possible Cause 53 Oxygen sensor right side Open or shorted signal circuit high O2 signal Open signal in trans Control unit Noi mamas WM fuel or ignition system CM Um fuel or ignition system we TAR ppm A a hai eA Be an Ale TWC function RH bank e converter wiring ECM TWC function LH bank Catalytic converter wiring ECM Fuel injection system function RH Wiring injector oxygen sensor bank Fuel injection system function LH Wiring oxygen sensor MAF ECM bank 87 Canister control solenoid valve Wiring EVAP valve ECM circuit ss ECT sensor Wiring BOT sensor ECM 35 Chapter 4 Nissan Infiniti FAULT CODE DEFINITIONS 113 115 Possible Cause EVAP canister purge control system EVAP valve 114 Fuel trim right side fuel too rich Oxygen sensor or circuit fuel pressure 115 Fuel trim right side fuel too rich Oxygen sensor or circuit fuel pressure Chapter 4 36 Toyota Lexus OVERVIEW OF TOYOTA LEXUS DIAGNOSTIC SYSTEMS OVERVIEW OF TOYOTA LEXUS DIAGNOSTIC SYSTEMS e Retrieving codes from Toyota Lexus vehicles requires connecting either the round or square end of code retrieval tool Figure T1 to vehicle s test connector e To retrieve codes you will need to access your vehicle s computer test connector Round Connector T2 Used on older model cars and vans Yel
6. Observe Check Engine light for codes Codes Codes blink out one after the other Trouble codes 1 10 are dis played using a series of short blinks H15 codes 11 and up use a combina tion of long and short blinks H16 The number of long blinks equals the first digit and the number of short equals the second H17 Procedure 1986 models only Access ECU located under front passenger seat H5 by moving seat all the way back 1987 89 models only Access ECU located on passenger side floor board H6 by pulling back carpet Turn ignition on and observe LED on ECU for codes Codes Codes blink out in single flashes followed by a two second pause For example 2 blinks then two se cond pause equals code 2 H14 LED will stop flashing after all codes have been displayed Chapter 3 Honda Acura CODE RETRIEVAL PROCEDURE ECU Test Connector Locations The physical locations of the ECU or test connector for Honda Acura vehicles are shown in Figures H4 through H9 Refer to the code retrieval instructions in Table H1 Honda or Table H2 Acura to determine the correct location for your vehicle Chapter 3 18 Honda Acura CODE RETRIEVAL PROCEDURE Code Examples Examples of Honda Acura fault codes are shown in Figures H10 through H17 Refer to the code retrieval instructions in Table H1 Honda or Table H2 Acura to determine the code display for your vehicle 84 2 1 00009 Code 0 AL
7. 0 2 1 2 2 2 3 Civic CRX 87 95 1 5 1 6 Odyssey Model Years Engine Model Years Engine 86 95 1 6 1 7 1 8 86 95 2 5 2 7 3 2 91 95 3 0 3 2 92 94 2 5 NISSAN Model Years Engine Model Years Engine Altima 93 95 2 4 Axxess 90 2 4 Maxima 86 95 3 0 NX 91 94 1 6 2 0 Pathfinder 87 95 2 4 3 0 Hardbody 87 95 2 4 3 0 Pickup Pulsar 87 90 1 6 1 8 Quest 93 95 3 0 Sentra 87 95 1 6 2 0 Stanza 86 92 2 0 2 4 Van 87 90 2 4 200SX 84 95 1 6 1 8 2 0 3 0 240SX 89 95 2 4 300ZX 86 95 3 0 INFINITI Model Years Engine Model Years Engine G20 91 95 2 0 J30 93 95 3 0 M30 90 92 3 0 Q45 90 95 4 5 TOYOTA Model Years Engine Model Years Engine 4 Runner 84 95 2 4 3 0 Camry 84 93 2 0 exc Diesel 2 2 2 5 3 0 3 Chapter 1 General Information BEFORE YOU BEGIN TOYOTA cont Model Years Engine Model Years Engine Celica 86 95 1 6 1 8 Corolla 86 95 1 6 1 8 2 0 2 2 Cressida 83 89 2 8 w Super Cressida 86 92 2 8 3 0 Monitor Display Land 88 94 4 0 4 5 MR2 85 95 1 6 2 0 Cruiser 2 2 Paseo 92 95 1 5 Pickup 83 94 2 4 exc Diesel 3 0 Previa 91 95 2 4 exc SC Supra 84 95 2 8 3 0 T100 93 94 3 0 Tercel 89 94 1 5 Van 84 89 2 0 22 LEXUS Model Years Engine Model Years Engine SC300 92 95 3 0 SC400 92 95 40 BEFORE YOU BEGIN e Fix any known mechanical problems before performing any test Complete a thorough vehicle inspection before starting any diagnostic p
8. 3173 IMPORT COMPUTER CODE READER FRONT COVER Table of Contents Chapter Title Page No LL ii 1 GENERAL INFORMATION SAFETY PRECAUTIONS 1 GENERAL INFORMATION 2 VEHICLES COVERED 3 BEFORE YOU BEGIN 4 VEHICLE SERVICE MANUALS 5 PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET ia aoa WON REECE 6 2 ABOUT IMPORT VEHICLE DIAGNOSTIC SYSTEMS AUTOMOTIVE COMPUTER CONTROL SYSTEMS 9 ON BOARD VEHICLE DIAGNOSTICS OBDD 10 DIAGNOSTIC TROUBLE CODES 10 3 HONDA ACURA OVERVIEW OF HONDA ACURA DIAGNOSTIC SYSTEMS cia adi 13 CODE RETRIEVAL PROCEDURE 14 ERASING CODES 20 HONDA ACURA FAULT CODE DEFINITIONS 21 4 NISSAN INFINITI OVERVIEW OF NISSAN INFINITI DIAGNOSTIC SYSTEMS 23 CODE RETRIEVAL PROCEDURE 24 ERASING CODES 32 NISSAN INFINITI FAULT CODE DEFINITIONS 34 5 TOYOTA LEXUS OVERVIEW OF TOYOTA LEXUS DIAGNOSTIC SYSTEMS anar 87 CODE RETRIEVAL PROCEDURE 38 ERASING CODES 43 TOYOTA LEXUS FAULT CODE DEFINITIONS 45 6 GLOSSARY INTRODUCTION eee eee adani 49 GLOSSARY OF TERMS AND ABBREVIATIONS 49 7 WARRANTY AND SERVICE LIMITED ONE YEAR WARRANTY 51 TECHNICAL ASSISTA
9. DIAGNOSTICS 1 NOTE The computer does not make the adjustments or corrections directly It commands other devices such as the fuel injectors idle air control EGR valve or Ignition Module to perform these functions These devices are called Actuators because they initiate an action in response to the commands of the computer ON BOARD VEHICLE DIAGNOSTICS OBD l Beginning in 1988 California s Air Resources Board CARB and later the Federal Government s Environmental Protection Agency EPA required vehicle manufacturers to include a self diagnostic program capable of identifying an emissions related fault via the vehicles On Board Computers some manufacturers used OBD before it was required The first generation of Onboard Diagnostics came to be known as OBD I OBD Tis a set of self testing or self diagnosing instructions that are programmed into the vehicle s on board computer The program is specifically designed to detect failures in the sensors actuators switches and wiring of the various vehicle emissions related systems fuel injection system ignition system EGR system catalytic converter etc If the computer detects a failure in any one of these components or systems it alerts the driver by illuminating the Check Engine light on the dash The computer also assigns a numeric code OBD I systems utilized a 2 or 3 digit code for each specific problem that it detects and stores these codes in
10. EFT fuse for 30 seconds Tercel 89 90 With ignition off remove 20A Stop fuse for 30 seconds 91 94 With ignition off remove 15A EFT fuse for 30 seconds 84 89 With ignition off remove 15A EFT fuse for 30 seconds Lexus Erasing Produres Model Years Procedure ES250 90 91 With ignition off remove the 20A EFP fuse for 10 seconds ES300 92 93 With ignition off remove the 15A EFI fuse for 10 seconds GS300 93 95 With ignition off remove the 20A EFI fuse for 10 seconds LS400 90 94 With ignition off remove the 20A EFT fuse for 10 seconds SC300 92 93 With ignition off remove the 30A EFT fuse for 10 seconds 94 95 With ignition off remove the 20A EFT fuse for 10 seconds SC400 92 95 With ignition off remove the 30A EFT fuse for 10 seconds Chapter 5 44 Toyota Lexus FAULT CODE DEFINITIONS 1 16 TOYOTA LEXUS FAULT CODE DEFINITIONS IMPORTANT Retrieving and utilizing Diagnostic Trouble Codes DTCs for troubleshooting vehicle operation problems is only one part of an overall diagnostic strategy Never replace a part based solely on the DTC definition Always consult the vehicle s service manual for more detailed testing instructions Each DTC has a set of testing procedures instructions and flow charts that must be followed to confirm the exact location of the problem This type of information is found in the vehicle s ser
11. Nissan Infiniti models do not require a tool to retrieve codes The Tool Req column in the Code Retrieval Procedures Tables on pages 24 through 29 will let you know if a tool is required If no tool is required just follow the procedures as indicated to retrieve codes 23 Chapter 4 Nissan Infiniti CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE 1 Always observe safety precautions whenever working on a vehicle Fix any known mechanical problems before this test Warm up engine before this test Have a pencil and paper handy Locate your vehicle in the appropriate table see below for Nissan Code Retrieval Procedures see page 29 for Infiniti Code Retrieval Procedures Follow the procedures applicable to your vehicle H Refer to page 30 for ECU Locations Figures N3 through N7 H Refer to page 31 for Code Examples Figures N8 through N11 Refer to pages 34 36 for Nissan Infiniti Fault Code Definitions Match the retrieved Diagnostic Trouble Codes with those listed read the associated definition s and consult the vehicle s service manual for further evaluation Refer to page 32 for the Erasing Codes procedure Consult the appropriate table for your vehicle Nissan Erasing Procedure or Infiniti Erasing Procedure and follow the procedure listed Nissan Code Retrieval Procedures Procedure Access ECU located be Maxima
12. Reader is connected Chapter 5 38 Toyota Lexus CODE RETRIEVAL PROCEDURE Toyota Code Retrieval Procedures Cont Tool Years c Perform the following Camry 85 93 2 0 2 2 2 5 Procedure Locate rectangular diag Celica 86 95 1 6 1 8 nostic connector under hood T7 Plug Code Reader into diagnostic connector Corolla 6 1 Turn ignition on Observe Check Engine light for codes Codes Codes are displayed using a series of blinks and pauses Example blink pause blink blink blink code 13 T9 If more than one code is stored the lowest number code is displayed first followed by a 2 5 second pause then the next highest number code When all codes have been displayed there is a 4 5 second pause then the codes are repeated Codes will continue to cycle as long as the ignition is on and the Code Reader is connected Cressida 83 89 All w Procedure Locate Super Monitor Dis Super play on dashboard T5 Push and hold Monitor the SELECT and INPUT M keys simul Display taneously for four seconds DIAG will appear on the screen Push and hold SET key for four seconds View codes on LCD display Codes The screen will show OK of no codes are present T10 If codes are present they will appear on the screen screen T10 If more than one code is present they will be separated by a three second pause Cressida 87 92 2 8 3 0 Procedure Locate rectangular diag Land 4 0 4 5 nostic c
13. the following Accord 84 85 1 8 F I N Procedure Access ECU located only under driver s seat H4 Turn ignition on and observe LEDs on ECU for codes Codes Codes are displayed using 4 LEDs labeled 8 4 2 1 H10 Determine codes by adding LED values Examples LED 8 and LED 1 on code 9 8 1 9 H11 LED 4 code 4 4 0 4 12 No LEDs code 0 H13 When more than one code is present codes are separated by a 2 second pause Chapter 3 14 Honda Acura CODE RETRIEVAL PROCEDURE Honda Code Retrieval Procedures Cont Tool Years Perform the following Accord 86 89 2 0 Procedure Access ECU located under only front driver s seat H4 by moving seat all the way back Turn ignition on and observe LED on ECU for codes Codes Codes blinked out by LED are separated by two second pause then repeated For example 2 blinks two second pause 2 blinks code 2 H14 Procedure Access ECU located on e 91 A 2 1 passenger side floor board H6 by pulling back the carpet Turn ignition on and observe LED on ECU for codes Codes Codes 1 10 are displayed using a series of short blinks H15 codes 11 amp up use a combination of long and short blinks H16 The num ber of long blinks equals the first digit and the number of short blinks equals the second H17 Accord 2 2 incl Procedure Access service check con V TEC nector located under dashboard on 2 7 inc
14. 0 turn diagnostic mode selector fully clockwise and observe LEDs on ECU 87 95 2 4 3 0 When LEDs have blinked three times turn selector fully counterclockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED indi cates the second digit ones Example one Red flash and two Green flashes code 12 N11 240SX 89 90 2 4 Procedure Access ECU from passen ger side front kick panel N4 and posi tion it so LEDs can be observed Using Nissan tool turn diagnostic mode selec tor fully clockwise and observe LEDs on ECU When LEDs have blinked three times turn selector fully counterclock wise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED in dicates the second digit ones Example one Red flash and two Green flashes code 12 N11 3 0 incl Procedure Access ECU from passen Turbo ger side front kick panel N4 Make sure diagnostic mode selector is turned fully counterclockwise Turn ignition on Using Nissan tool turn selector fully clockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of b
15. 2 12 Honda Acura OVERVIEW OF HONDA ACURA DIAGNOTIC SYSTEMS OVERVIEW OF HONDA ACURA DIAGNOSTIC SYSTEMS e Retrieving codes from Honda Acura vehicles as H1 requires the use of the two gt terminal connector of code retrieval tool as shown in Figure H1 e Honda Acura vehicles use a variety of diagnostic systems which use either the Check Engine light or LEDs Light Emitting Diodes on the ECM Engine Control Module to display diagnostic trouble codes e To retrieve codes you will need to access your vehicle s computer test connector or ECM e Honda Acura vehicles use a rectan gular two socket plastic connector usually light blue in color H2 NOTE Some Honda Acura models do not require a tool to retrieve codes The Tool Req column in the Code Retrieval Procedures Tables on pages 14 through 17 will let you know if a tool is required If no tool is required just follow the procedures as indicated to retrieve codes Check Engine Light CHECK e The Check Engine light does more than alert you to a potential problem It also transmits the fault codes in the computer s memory through a series of blinks and pauses when the vehicle is in diagnostic mode e Your Check Engine light is located on your vehicle s instrument cluster and may be labeled PGM FT PGM CARB CHECK or with a picture of an engine Figure H3 NOT
16. 800 782 4356 www helminc com 5 Chapter 1 General Information PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes By having a complete account of your vehicle s current problem s you will be able to systematically pinpoint the problem s by comparing your answers to the fault codes you retrieve You can also provide this information to your mechanic to assist in diagnosis and help avoid costly and unnecessary repairs It is important for you to complete this form to help you and or your mechanic have a clear understanding of your vehicle s problems NAME DATE VIN YEAR MAKE MODEL ENGINE SIZE VEHICLE MILEAGE VIN Vehicle Identification Number found at the base of the windshield on a metallic plate or at the driver door latch area consult your vehicle owner s manual for location TRANSMISSION A Automatic Manual Please check all applicable items in each category DESCRIBE THE PROBLEM Chapter 1 6 General Information PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET WHEN DID YOU FIRST NOTICE THE PROBLEM A Just Started C Started Last Week Started Last Month Other LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS PROBLEMS S
17. 92 94 hind center console N3 Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise wait two seconds then turn selector fully coun terclockwise Observe red LED on ECU for codes Codes Codes are displayed using a combination of long and short blinks Codes are determined by the number and duration of blinks A long blink in dicates the first digit ten a short blink indicates the second digit ones N8 Example long blink pause short blink short blink code 12 N9 If Chapter 4 24 Nissan nfiniti CODE RETRIEVAL PROCEDURE Nissan Code Retrieval Procedures Cont Tool Years 41 Perform the following Altima more than one code is stored the ECU Maxima will blink the lowest number code first Sentra pause for two seconds then display the Stanza next highest number code This con 2005 6 2 tinues until all stored codes have been cont displayed the cycle then repeats Procedure Access ECU from driver s side kick panel N6 except Stanza Wagon which is located under driver s seat Make sure diagnostic mode selec tor is turned fully counterclockwise Turn ignition on Using Nissan tool turn selector fully clockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED in
18. E If your Check Engine light does not come on when you turn on the ignition please refer to your vehicle s service manual You may have a problem with the vehicle that is preventing it from illuminating You must fix this problem before you can retrieve fault codes from the vehicle s computer 13 Chapter 3 Honda Acura CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE 1 Always observe safety precautions whenever working on a vehicle Fix any known mechanical problems before this test Warm up engine before this test Have a pencil and paper handy Locate your vehicle in the appropriate table see below for Honda Code Retrieval Procedures see page 16 for Acura Code Retrieval Procedures Follow the procedures applicable to your vehicle Refer to page 18 for ECU Test Connector Locations Figures H4 through H9 H Refer to page 19 for Code Examples Figures H10 through H17 Refer to pages 21 and 22 for Honda Acura Fault Code Definitions Match the retrieved Diagnostic Trouble Codes with those listed read the associated definition s and consult the vehicle s service manual for further evaluation Refer to page 20 for the Erasing Codes procedure Consult the appropriate table for your vehicle Honda Erasing Procedure or Acura Erasing Procedure and follow the procedure listed Honda Code Retrieval Procedures Tool Years Req Perform
19. L LEDs OFF H13 2 SECONDS OOO LINK BLINK BLINK BLINK BLINK O O O O O LINK BLINK BLINK BLINK BLINK 3 4 SECONDS CODE 10 LONG BLINK SHORT BLINK H 06 SEC _ 0 3 SEC SHORT LO PAUSE PAUSE LONG BLINK 09SECONDS BLINK BLINK 2SECONDS CODE 12 4 21 LONG MS CD LONG BLINK LONG BLINK 09SECONDS BLINK 2SECONDS 19 Chapter 3 Honda Acura ERASING CODES ERASING CODES e Always observe safety precautions whenever working on a vehicle e Remove Code Reader from vehicle s test connector before erasing codes e Erase codes only when all repairs have been completed Refer to Honda Erasing Procedures or Acura Erasing Procedures for specific instructions for your year make and model e After erasing codes verify that repairs were successfully completed Start the engine and warm to normal operating temperature After normal operating temperature is reached turn off the ignition and repeat the code retrieval procedure for your vehicle If no codes are retrieved the repair s was successful NOTE Removing fuses or battery cables may clear the memory on the radio clock etc or may enable the Theftlock feature on the radio Honda Erasing Procedures Model Years Procedure Accord Remove fuse No 10 for 10 seconds Remove fuse No 11 for 10 seconds Remove fuse No 24 for 10 seconds Civic Remove Radio fuse for 10 seconds CRX Remove fuse No 30 for 10 sec
20. NCE AND WARRANTY SERVICE esa a 51 You Can Do It your vehicle e Follow the step by step instructions 2 Read Diagnostic Trouble 1 Look up the Code Retrieval information for Codes e The codes are displayed by either the Check Engine light or at the vehicles computer Locate Problem Areas e Look up fault code descriptions in the Fault Code Definition list ii General Information SAFETY PRECAUTIONS SAFETY PRECAUTIONS To avoid personal injury instrument damage and or damage to equipment under test do not operate the Import Code Reader before reading this manual This manual describes common test procedures used by experienced service personnel and technicians Many test procedures require precautions to avoid accidents that can result in personal injury and or vehicle or equipment damage Always read your vehicle s service manual and follow it s safety precautions before any test or service procedure is performed a When an engine is running it produces carbon monoxide a toxic and poisonous gas To prevent serious injury or death from carbon monoxide poisoning operate a vehicle ONLY in a well ventilated area To protect your eyes from propelled objects as well as hot or caustic liquids always wear approved safety eye protection When an engine is running several objects rotate at a very high rate of speed electric cooling fans pulleys serpentine and fan d
21. TARTING No symptoms Cranks but will not start C Will not crank Starts but takes a long time ENGINE QUITS OR STALLS No symptoms Right after vehicle comes to a stop Right after starting A While idling Q When shifting into gear During acceleration During steady speed driving When parking IDLING CONDITIONS No symptoms Is sometimes too fast or too slow Is too slow at all times Is rough or uneven C Is too fast Fluctuates up and down RUNNING CONDITIONS No symptoms Backfires Runs rough Misfires or cuts out Lacks power Engine knocks pings or rattles Bucks and jerks Surges Poor fuel economy Dieseling or run on Hesitates or stumbles on accelerations 7 Chapter 1 General Information PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET AUTOMATIC TRANSMISSION PROBLEMS if applicable A No symptoms Vehicle does not move when in Shifts too early or too late gear Changes gear incorrectly Jerks or bucks PROBLEM OCCURS Morning Afternoon C Anytime ENGINE TEMPERATURE WHEN PROBLEM OCCURS Q Cold Warm Hot DRIVING CONDITIONS WHEN PROBLEM OCCURS Short less than 2 miles A With headlights on 2 10 miles During acceleration Long more than 10 miles A Mostly driving downhill Q Stop and go A Mostly driving uphill A While turning Mostly driving level A While braking Mostly driving curvy roads
22. as oxygen sensors coolant temperature sensors throttle position sensors fuel injectors etc that are located throughout the engine and are connected by electrical wiring to the on board computer The on board computer is the heart of the Computer Control System The computer software contains several pre programmed reference values that represent the ideal air fuel mixture spark timing transmission gear selection etc for any driving condition These values are programmed at the factory and are specific to each vehicle model The on board computer receives information inputs from sensors and switches located throughout the engine These devices monitor critical engine conditions coolant temperature engine speed engine load throttle position air fuel ratio etc The computer compares the actual values received from these sensors with the reference values that are programmed in it s memory The computer commands the necessary corrections through operating output actuators as needed so that the incoming sensor values match the pre programmed reference values for that particular driving condition Since vehicle operating conditions are constantly changing the computer continuously makes adjustments or corrections especially to the air fuel mixture and spark timing to keep all the engine systems operating within the pre programmed reference values 9 Chapter 2 About Import Vehicle Diagnostic Systems ON BOARD VEHICLE
23. di cates the second digit ones Example one Red flash and two Green flashes code 12 N11 Pulsar 6 1 Procedure Sentra e All except 200 SX Access ECU lo Stanza 0 2 cated under passenger seat N5 2005 0 3 except Stanza Wagon which is lo cated under driver s seat 200 SX only Access ECU located behind driver side kick panel N6 Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise and observe LEDs on ECU When LEDs have flashed three times turn selector fully counterclockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED indi cates the second digit ones Example one Red flash and two Green flashes code 12 N11 25 Chapter 4 Nissan Infiniti CODE RETRIEVAL PROCEDURE Nissan Code Retrieval Procedures Cont PE PSP Req Perform the following Maxima 86 94 3 0 8OHC Y Procedure All except 87 88 Maxima Access ECU located under passenger seat N5 87 88 Maxima only Access ECU located behind center console N3 Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise wait at least two seconds then turn selector fully counterclock wise Observe both red and green LEDs on ECU for codes Codes Codes are
24. displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the green LED The Red LED indicates the first digit tens the Green LED indi cates the second digit ones Example one Red flash and two Green flashes code 12 N11 91 93 1 6 2 0 Procedure Access ECU located be RARE 91 95 2 4 hind center console N3 except 300ZX 300ZX 90 95 3 0 incl which is located in passenger side foot well under carpet N5 Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise wait two seconds then turn selector fully coun terclockwise Observe red LED on ECU for codes Codes Codes are displayed using a combination of long and short blinks Codes are determined by the number and duration of LED blinks A long blink indicates the first digit tens a short pause indicates the second digit ones N8 Example long blink pause short blink short blink code 12 N9 If more than one code is stored the ECU will blink the lowest number code lowest number code first pause for two seconds then display the next highest number code This continues until all stored codes have been displayed the cycle then repeats Chapter 4 26 Nissan Infiniti CODE RETRIEVAL PROCEDURE Nissan Code Retrieval Procedures Cont Tool Years Perform the following Procedure Access ECU located under passenger seat N5 Using Nissan tool 87 95 2 4 3
25. em right side Oxygen sensor or circuit fuel system 45 Fuel metering left side Injector control circuit incorrect fuel metering 46 Fuel metering right side Injector control circuit incorrect fuel metering Chapter 3 22 Nissan nfiniti OVERVIEW OF NISSAN INFINITI DIAGNOSTIC SYSTEMS OVERVIEW OF NISSAN INFINITI DIAGNOSTIC SYSTEMS e Retrieving codes from Nissan Infiniti vehicles NISSAN requires the use of the flat 100 end of the code retrieval _ N1 tool shown in Figure N1 e Nissan Infiniti vehicles use a variety of computer systems which are equipped with either a single LED Light Emitting Diode or a dual LED display e To retrieve codes you need to first locate the LED display on the vehicle s computer The LED s are mounted inside the computer but may be seen by looking through an opening in the top of or on the side of the computer housing In some cases you may have to remove the computer from its mount NOTE Refer to the vehicle s service manual when removing the computer from it s mount as it is easily damaged All Nissan Infiniti vehicles covered in this manual are equipped with a screw type diagnostic mode selector on the vehicle s computer The diagnostic mode selector is accessed through a cutout in the computer housing Two marks show the operating limits of the diagnostic mode selector The Code Reader is used to adjust the position of the diagnostic mode selector N2 NOTE Some
26. hapter 5 46 IN c 47 51 EE Toyota Lexus FAULT CODE DEFINITIONS 51 85 in P or N during code retrieval ECU Turbocharger intercooler control Intercooler coolant Hi sensor or coolant too low circuit intercooler water pump or circuit intercooler ECU ECU Turbocharger intercooler control Intercooler coolant level sensor or coolant pump motor circuit intercooler water pump or circuit intercooler ECU ECU Knock sensor right hand circuit Knock sensor or circuit ECU EGR system malfunction EGR system EGR temperature sensor or circuit EGR BVSV or VSV or circuit ECU Fuel cut off solenoid signal Fuel cut off solenoid or circuit ECU 78 Fuel pump control signal Fuel pump or circuit ECU power source or ECU 81 Transmission Control Module ECT1 Communication 83 Transmission Control Module ESA1 Communication 84 Transmission Control Module ESA2 Communication 85 Transmission Control Module ESA3 Communication 47 Chapter 5 Toyota Lexus Chapter 5 48 INTRODUCTION This Glossary contains definitions for abbreviations and terms you may find in this manual or in your vehicle service manual GLOSSARY OF TERMS AND ABBREVIATIONS 49 A C Air Conditioning A T Automatic Transmission AAC Auxiliary Air Control BARO Barometric Pressure CKP Crankshaft Position CMP Camshaft Position Closed Throttle Position DOHC Dual Overhead Cam ECT Engine Co
27. ieval Procedures see page 40 for Lexus Code Retrieval Procedures Follow the procedures applicable to your vehicle Refer to page 41 for Diagnostic Connector Locatons Figures T6 and 7 H Refer to page 42 for Code Examples Figures 8 through T10 Refer to pages 45 47 for Toyota Lexus Fault Code Definitions Match the retrieved Diagnostic Trouble Codes with those listed read the associated definition s and consult the vehicle s service manual for further evaluation Refer to page 43 for the Erasing Codes procedure Consult the appropriate table for your vehicle Toyota Erasing Procedures or Lexus Erasing Procedures and follow the procedure listed Toyota Code Retrieval Procedures 85 86 Procedure Locate round diagnostic 85 86 2 connector under hood T6 Plug Code Reader into diagnostic connector Turn 4 Runner 84 86 2 ignition on Observe Check Engine light for codes Codes If there are no codes stored in memory the Check Engine light will blink once every three seconds If codes are stored the light will blink a number of times equal to the code number every three seconds Example Three blinks code 3 T8 If more than one code is stored the lowest number code is dis played first followed by a three second pause then the next highest number code Codes will continue to cycle re peat as long as the ignition is on and the Code
28. it s memory for later retrieval The codes can be retrieved from the computer s memory with the use of a device called a Code Reader or a Scan Tool NOTE With the exception of some 1994 and 1995 vehicles most vehicles from about 1982 to 1995 are equipped with OBD I systems DIAGNOSTIC TROUBLE CODES Diagnostic Trouble Codes or Fault Codes can be used to identify engine systems or components that are malfunctioning The computer records codes for the following two types of engine problems Chapter 2 10 About Import Vehicle Diagnostic Systems DIAGNOSTIC TROUBLE CODES e Hard Codes Hard codes are stored for problems which are happening now Hard codes cause the Check Engine light to turn on The light remains on as long as the hard code is present e Intermittent Codes Intermittent codes are stored for problems which happened in the past but are not currently present or detected by the vehicle s computer Intermittent problems may cause the Check Engine light to flicker by briefly turning on and turning off when the problem goes away Intermittent codes stay in the computer s memory even when the problem is no longer present These intermittent problems may be caused by faulty wiring vehicle operating conditions etc NOTE Not all vehicles store Intermittent codes 11 Chapter 2 About Import Vehicle Diagnostic Systems Chapter
29. kwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 240SX 89 90 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 91 95 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 300ZX After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 87 89 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 90 95 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased Infiniti Erasing Procedures Model Years Procedure All All After you have finished retrieving codes turn the selector back fully clockwise to erase the ECU code memory 33 Chapter 4 Nissan Infiniti FAULT CODE DEFINITIONS 11 51 NISSAN INFINITI FAULT CODE DEFINITIONS IMPORTANT Retrieving and utilizing Diagnostic Trouble Codes DTCs for troubleshooting vehicle operation problems is only one part of an overall diagnostic strategy Neve
30. l passenger side H7 Plug Code Reader V TEC into service check connector and turn 1 5 1 6 ignition on and observe Check Engine 1 5 1 6 light for codes 2 2 2 8 Codes Codes blink out one after the other Check Engine light will stop blinking after all codes have been dis played Trouble codes 1 10 are dis played using a series of short blinks H15 codes 11 amp up use a combina tion of long and short blinks H16 The number of long blinks equals the first digit and the number of short blinks indicates the second H17 Civic 87 91 1 5 1 6 Procedure Access ECU located on CRX passenger side floor board H6 by pulling back the carpet Turn ignition on and observe LED on ECU for codes Codes Codes blinked out by LED are separated by two second pause then repeated For example 2 blinks two second pause 2 blinks code 2 H14 15 Chapter 3 Honda Acura CODE RETRIEVAL PROCEDURE Honda Code Retrieval Procedures Cont Tool Years Req Perform the following Prelude 85 87 1 8 2 0 N Procedure Access ECU located be hind driver s seat within door pillar as sembly H8 Turn ignition on and observe LED on ECU for codes Codes Codes blinked out by LED are separated by two second pause then repeated For example 2 blinks two second pause 2 blinks code 2 H14 Prelude 92 95 2 2 2 3 Y Procedure Access service check con nector located behind center conso
31. le on driver s side H9 Plug Code Reader into service check connector and turn ignition on Observe Check Engine light for codes Codes Codes 1 10 are displayed using a series of short blinks H15 codes 11 up use a combination of long and short blinks H16 The num ber of long blinks equals the first digit and the number of short blinks equals the second H17 Acura Code Retrieval Procedures Tool Years Req Perform the following Integra 86 91 1 6 1 8 N Procedure All except 90 91 models Access ECU located under front passenger seat H5 by moving seat all the way back 90 91 models only Access ECU located on passenger side floor board H6 by pulling back the carpet Turn ignition on and observe LED on ECU for codes Codes Codes blink out one after the other Trouble codes 1 10 are dis played using a series of short blinks H15 codes 11 and up use a combina tion of long and short blinks H16 The number of long blinks equals the first digit and the number of short equals the second H17 Chapter 3 16 Honda Acura CODE RETRIEVAL PROCEDURE Acura Code Retrieval Procedures Cont Tool Years Perform the following Integra 92 95 Integra Legend NSX Vigor 17 Procedure Access service check con nector located under dashboard on pas senger side H7 Plug Code Reader into service check connector and turn ignition on
32. low or green in color located under the hood Ea e Front corner right or left e Fender well right or left Te e Fire wall right or left It may have a protective cap or may be plugged into a protective cap mounted on the side wall Use round head of Code Reader on vehicles with this type of connector Square Connector T3 Used on newer model cars and vans Black or grey in color located under the hood near either e Front corner right or left e Fender well right or left e Fire wall right or left It has a cover labeled DIAGNOSTIC DIAGNOSIS or CHECK CONN Use square head of Code Reader on vehicles with this type of connector NOTE Some Toyota Lexus models do not require a tool to retrieve codes The Tool Req column in the Code Retrieval Procedures Tables on pages 38 through 41 will let you know if a tool is required If no tool is required just follow the procedures as indicated to retrieve codes Check Engine Light 37 e Transmits the fault codes in the computer s memory to you Chapter 5 Toyota Lexus CODE RETRIEVAL PROCEDURE CODE RETRIEVAL PROCEDURE Pickup Always observe safety precautions whenever working on a vehicle Fix any known mechanical problems before this test Warm up engine before this test Have a pencil and paper handy Locate your vehicle in the appropriate table see below for Toyota Code Retr
33. lowed by the Green LED The Red LED indicates the first digit tens the Green LED indi cates the second digit ones Example one Red flash and two Green flashes code 12 N11 28 Nissan nfiniti CODE RETRIEVAL PROCEDURE Infiniti Code Retrieval Procedures Tool Years Req Perform the following 480 93 95 3 0 Y 90 92 3 0 90 95 4 5 M30 Q45 29 Procedure Access ECU from pas senger side kick panel N4 Turn ig nition on Using Nissan tool turn diag nostic mode selector fully clockwise wait for two seconds then turn selector fully counterclockwise Observe LED on ECU or vehicle s Check Engine light for codes Codes Codes are displayed using both long and short blinks N8 The long blinks represent the first digit the short blinks represent the second digit N9 Codes are displayed in numeric order beginning with the lowest num ber code and ending with the highest number code Procedure Access ECU from pas senger side kick panel N4 and posi tion it to observe LED Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise wait for two seconds then turn selector fully counterclockwise Observe LED on ECU or vehicle s Check Engine light for codes Codes Codes are displayed using both long and short blinks N8 The long blinks represent the first digit the short blinks represent the second digit N9 Codes are displayed in numeric
34. nd GENERAL INFORMATION This Code Reader and manual are designed for use both by consumers with little or no experience in retrieving codes or by experienced technicians If you are having problems with your vehicle and only want to know if any Diagnostic Trouble Codes are present in the vehicle s computer system go directly to Chapter 3 for Honda Acura Chapter 4 for Nissan Infiniti or Chapter 5 for Toyota Lexus and follow the simple directions to retrieve the codes The codes retrieved and their definitions will give you valuable information and a starting point from which to proceed to the next step Once the codes have been retrieved you can choose to e Take your vehicle to an Automotive Service Center for repair Take your vehicle a copy of the completed Preliminary Vehicle Diagnosis Worksheet see page 6 and diagnostic trouble codes retrieved to your technician for evaluation This will demonstrate to your technician that you are an informed motorist and will also assist him in pinpointing the location of the problem e Attempt to fix the problem yourself If you choose to fix the problem yourself read and follow all of the recom mendations and procedures stated in the factory service manual for your application Chapter 1 2 General Information VEHICLES COVERED VEHICLES COVERED HONDA Model Years Engine Model Years Engine Accord 84 95 1 8 2 0 2 2 2 7 93 95 1 5 1 6 Prelude 85 95 1 8 2
35. ode memory is now erased Pulsar 88 90 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 88 90 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 91 95 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased Chapter 4 32 Nissan Infiniti ERASING CODES Nissan Erasing Procedures Cont Model Years Procedure Stanza After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 87 89 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 91 92 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased Van 87 90 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 200SX 84 86 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 87 88 After codes have been retrieved turn selector fully cloc
36. olant Temperature ECM ECU Engine Control Module Unit vehicle s computer EFI Electronic Fuel Injection EGR Exhaust Gas Recirculation EVAP Evaporative Emissions Control F I Fuel Injection HO2S Heated Oxygen Sensor IAT Intake Air Temperature L H Left Hand LED Light Emitting Diode M T Manual Transmission MAF Mass Air Flow MAP Manifold Absolute Pressure O2S Oxygen Sensor OBD I On Board Diagnostics First Generation R H Right Hand SOHC Single Overhead Cam TCM Transmission Control Module TPS Throttle Position Sensor VAF Vane Air Flow VSS Vehicle Speed Sensor Chapter 6 Chapter 6 50 Warranty and Service LIMITED ONE YEAR WARRANTY The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship for a period of one 1 year from the date of original purchase If the unit fails within the one 1 year period it will be repaired or replaced at the Manufacturer s option at no charge when returned prepaid to the Technical Service Center with Proof of Purchase The sales receipt may be used for this purpose Installation labor is not covered under this warranty All replacement parts whether new or re manufactured assume as their warranty period for only the remaining time of this warranty This warranty does not apply to damage caused by improper use accident abuse or if the product was altered or repaired by an
37. onds Del Sol 92 95 Remove fuse No 32 for 10 seconds Odyssey 93 95 Remove Radio fuse for 10 seconds Prelude 90 Remove Radio fuse for 10 seconds 89 91 Remove fuse No 35 for 10 seconds 92 95 Remove fuse No 43 for 10 seconds Acura Erasing Procedures Model Years Procedure Integra 86 91 Remove Hazard fuse for 10 seconds 92 95 Remove Back Up fuse for 10 seconds Legend 190 Remove Alternator Sense fuse for 10 seconds 91 95 Remove fuse No 15 for 10 seconds SX 91 95 Remove Clock fuse for 10 seconds Vigor 92 94 Remove Back Up fuse for 10 seconds Chapter 3 20 Honda Acura FAULT CODE DEFINITIONS 0 20 HONDA ACURA FAULT CODE DEFINITIONS IMPORTANT Retrieving and utilizing Diagnostic Trouble Codes DTCs for troubleshooting vehicle operation problems is only one part of an overall diagnostic strategy Never replace a part based solely on the DTC definition Always consult the vehicle s service manual for more detailed testing instructions Each DTC has a set of testing procedures instructions and flow charts that must be followed to confirm the exact location of the problem This type of information is found in the vehicle s service manual Possible Cause ECU ECU signal No signal to ECU 1 Oxygen sensor circuit Oxygen sensor or circuit ECU 2 Oxygen sensor circuit Oxygen sensor or circuit ECU 3 MAP sensor circuit Map sensor circuit
38. onnector under hood T7 Plug Cruiser Code Reader into diagnostic connector Paseo 1 5 Turn ignition on Observe Check Pickup 2 4 8 0 Engine light for codes El only Previa 2 4 5 Codes If there are no codes stored in memory the Check Engine light will Supra E 3 0 blink about two times per second If T100 3 0 codes are stored codes are displayed Tercel 1 5 using a series of blinks and pauses 4Runner 87 95 2 4 3 0 Example blink pause blink blink blink code 13 T9 If more than one code is stored codes are separated by a 2 5 second pause When all codes have been displayed there is a 4 5 second pause then the codes are repeated 39 Chapter 5 Toyota Lexus CODE RETRIEVAL PROCEDURE Toyota Code Retrieval Procedures Cont Tool Years 41 Perform the following Cressida 87 92 Codes will continue to cycle as long as Land 0 4 the ignition is on and the Code Reader Cruiser is connected Paseo Pickup Previa Supra T100 Tercel 4 Runner cont Procedure Locate rectangular diag nostic connector under hood T7 Plug Code Reader into diagnostic connector Turn ignition on Observe Check Engine light for codes Codes If there are no codes stored in memory the Check Engine light will blink once every six seconds on 85 88 models and about two times per second on 89 95 models If codes are stored codes are displayed using a series of blinks and pauses
39. order beginning with the lowest num ber code and ending with the highest number code Chapter 4 Nissan Infiniti CODE RETRIEVAL PROCEDURE ECU Locations The physical locations of the ECU for Nissan Infiniti vehicles are shown in Figures N3 through N7 Refer to the code retrieval instructions in Table N1 Nissan or Table N2 Infiniti to determine the correct location for your vehicle ECU may need to be accessed from driver or passenger side depending on model Chapter 4 30 Nissan nfiniti CODE RETRIEVAL PROCEDURE Code Examples Examples of Nissan Infiniti fault codes are shown in Figures N8 through N11 Refer to the code retrieval instructions in Table N1 Nissan or Table N2 Infiniti to determine the code display for your vehicle LONG BLINK SHORT BLINK O L 06 ul SHORT LONG LONG BLINK 09SECONDS BLINK BLINK 2SECONDS CODE 12 8 21 SHORT LONG LONG BLINK LONG BLINK os9seconbs BLINK 2 SECONDS RED GREEN LED LED GREEN GREEN RED BLINK BLINK BLINK CODE 12 amp 21 RED RED GREEN BLINK BLINK BLINK 31 Chapter 4 Nissan Infiniti ERASING CODES ERASING CODES e Always observe safety precautions whenever working on a vehicle e Frase codes only when all repairs have been completed Refer to Nissan Erasing Procedures or Infiniti Erasing Procedures for specific instructions for your year make and model e After erasing codes ve
40. oth Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED indicates 27 Chapter 4 Nissan Infiniti CODE RETRIEVAL PROCEDURE Nissan Code Retrieval Procedures Cont ba Ps Req Perform the following 300ZX 3 0 Y cont 300ZX 87 89 3 0 incl Chapter 4 the second digit ones Example one Red flash and two Green flashes code 12 N11 Procedure Access ECU from passen ger side front kick panel N4 Turn ig nition on Using Nissan tool turn diag nostic mode selector fully clockwise and observe LEDs on ECU When LEDs have blinked three times turn selector fully counterclockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first followed by the Green LED The Red LED indicates the first digit tens the Green LED indi cates the second digit ones Example one Red flash and two Green flashes code 12 N11 Procedure Access ECU located be hind center console N3 Turn ignition on Using Nissan tool turn diagnostic mode selector fully clockwise and ob serve LEDs on ECU When LEDs have blinked three times turn selector fully counterclockwise Observe both red and green LEDs on ECU for codes Codes Codes are displayed by blinking of both Red and Green LEDs N10 The Red LED blinks first fol
41. oyota Lexus CODE RETRIEVAL PROCEDURE Code Examples Examples of Toyota Lexus fault codes are shown in Figures T8 through T10 Refer to the code retrieval instructions in Table T1 Toyota or Table T2 Lexus to determine the code display for your vehicle CODE 3 Looo ex BLINK BLINK BLINK 3 4 SECONDS SHORT BLINK CODE 13 O x BLINK BLINK BLINK 3 4SECONDS SELECT INPUT SELECT INPUT SUPER MONITOR SUPER MONITOR Chapter 5 42 Toyota Lexus ERASING CODES ERASING CODES Always observe safety precautions whenever working on a vehicle Remove Code Reader from vehicle s test connector before erasing codes Erase codes only when all repairs have been completed Refer to Toyota Erasing Procedures or Lexus Erasing Procedures for specific instructions for your year make and model After erasing codes verify that repairs were successfully completed Start the engine and warm to normal operating temperature After normal operating temperature is reached turn off the ignition and repeat the code retrieval procedure for your vehicle If no codes are retrieved the repair s was successful NOTE Removing fuses or battery cables may clear the memory on on the radio clock etc or may enable the Theftlock feature the radio Toyota Erasing Procedures Model Years Procedure 4 Runner Camry Celica Corolla Cressida MR2 Land Cruiser Paseo
42. r replace a part based solely on the DTC definition Always consult the vehicle s service manual for more detailed testing instructions Each DTC has a set of testing procedures instructions and flow charts that must be followed to confirm the exact location of the problem This type of information is found in the vehicle s service manual Description Possible Cause 11 12 13 14 16 21 22 23 24 25 31 32 33 34 35 36 37 41 43 44 45 46 51 CKP sensor circuit CKP sensor or circuit MAF sensor circuit sensor or circuit signal too high ECT sensor circuit ECT sensor or circuit VSS circuit VSS or circuit Traction Control System Open or shorted signal circuit No ignition reference pulse Loss of primary signal Fuel Pump Idle speed control valve Open or shorted signal circuit Idle switch throttle valve switch Open or shorted signal circuit defective idle speed valve Idle switch Trans switch Open or shorted signal circuit Neutral Park switch Idle Speed control Open or shorted AAC circuit ECU circuit Abnormal input signals EGR sensor circuit No EGR operation Open or shorted signal circuit high HO2S signal Knock sensor or circuit EGR temperature sensor or circuit EVAP valve or circuit HO2S intake fuel system Air temperature sensor or circuit Fuel temperature sensor or circuit TPS or circuit Secondary TPS or circuit Defective injector Chapter 4 34
43. res sure ignition system coolant tem perature sensor air intake system airflow meter air leak ignition system electronic air bleed control valve MAP sensor vacuum sensor ECU 26 Mixture control continuously rich Loose ground injector or circuit oxygen sensor or circuit fuel pres sure ignition system coolant tem perature sensor air intake system airflow meter air leak ignition system electronic air bleed control valve MAP sensor vacuum sensor ECU HO2S rear circuit Oxygen sensor or circuit ECU 7 ircuit 8 HO2S right hand front circuit HO2S sensor heater or circuit ECU 1 2 VAP circuit ECU VAF circuit ECU 34 Turbocharger wastegate pressure Turbocharger pressure sensor or too high circuit turbocharger MAP sensor airflow meter wastegate VSV or circuit ECU Turbocharger wastegate pressure Turbocharger pressure sensor or sensor circuit BARO circuit MAP sensor or circuit ECU TPS circuit TPS sensor or circuit ECU VSS circuit VSS sensor or circuit slipping torque converter ECU Starter signal circuit Starter signal circuit main relay starter relay ignition switch or circuit ECU C 2 2 3 3 3 5 41 42 Sub Throttle position sensor signal Sub TPS sensor or circuit ECU A C switch ON during code Throttle position switch or circuit retrieval ECU 1 Closed throttle position switch Throttle position switch or circuit OFF during code retrieval ECU C
44. rify that repairs were successfully completed Start the engine and warm to normal operating temperature After normal operating temperature is reached turn off the ignition and repeat the code retrieval procedure for your vehicle If no codes are retrieved the repair s was successful Nissan Erasing Procedures Model Years Procedure Altima 93 95 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased Axxess After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased Maxima 87 92 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased 93 94 After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased 91 93 After codes have been retrieved turn selector fully clockwise and wait for two seconds ECU code memory is now erased Path 87 95 After codes have been retrieved turn selector fully clockwise finder After the LED s have blinked four times turn the selector fully counterclockwise ECU code memory is now erased After codes have been retrieved turn selector fully clockwise After the LED s have blinked four times turn the selector fully counterclockwise ECU c
45. rive belts etc To avoid serious injury always be conscious of moving parts and keep a safe distance from all these items as well as other potentially moving objects Engine parts become extremely hot when the engine is running To prevent severe burns avoid contact with hot engine parts Before starting an engine for troubleshooting make sure the parking brake is engaged Put the transmission in park for automatic transmission or neutral for manual transmission Block the drive wheels with a suitable blocking device Connecting or disconnecting test equipment when the ignition is on can cause a spark This spark is potentially damaging to the test equipment and to the vehicle s electronic components Always turn the ignition off before connecting or disconnecting any test equipment To prevent damage to the on board computer when taking vehicle electrical measurements always use a digital multimeter with at least 10 Megohms of impedance Chapter 1 General Information GENERAL INFORMATION h The vehicle s battery produces highly flammable hydrogen gas To prevent an explosion keep all sparks high temperature items or open flames away from the battery i Do not wear loose clothing or jewelry when working on an engine Loose clothing can get caught on the fan pulleys belts etc Jewelry is highly conductive and can cause a severe burn if it makes contact between a power source and grou
46. rocedure Loose or damaged hoses wiring or electrical connectors are often responsible for poor engine performance and in some cases these items may cause a false fault code Check the following areas e All fluid levels e Belts e Vacuum Hoses e Wiring and Connectors Please read your vehicle s service manual and perform all required preliminary checks BEFORE retrieving fault codes Chapter 1 4 General Information VEHICLE SERVICE MANUALS VEHICLE SERVICE MANUALS It is recommended that you consult the manufacturer s service manual for your vehicle before any test or repair procedures are performed Contact your local car dealership auto parts store or bookstore for availability of these manuals The following companies publish valuable repair manuals and information B ALLDATA LLC 9412 Big Horn Blvd Elk Grove California 95758 Phone 1 916 684 5200 www alldata com B Haynes Publications 861 Lawrence Drive Newbury Park California 91320 Phone 800 442 9637 www haynes com B Mitchell International 14145 Danielson Street Poway California 92064 Phone 888 724 6742 www mitchell com H Motor Publications 5600 Crooks Road Suite 200 Troy Michigan 48098 Phone 800 426 6867 www motor com FACTORY SOURCES Visit your local Acura Honda Infiniti Lexus Nissan and Toyota dealerships to purchase a factory service manual or visit H Helm Inc 14310 Hamilton Avenue Highland Park Michigan 48203 Phone
47. vice manual System Normal 6 Engine Speed RPM sensor creuit Tgnitor or cireuit distributor VSS circi Starter signal circuit VSS sensor or circuit main relay or circuit ignition circuit starter circuit ECU ECU Power Supply Ignition or circuit coil ECU A C switch ON during code retrieval A C switch ECU Closed throttle position switch Throttle position switch or circuit OFF during code retrieval ECU ark Neutral position switch in Park Neutral switch start D during code retrieval switch ECU Engine Speed RPM sensor Distributor or circuit ignitor or circuit circuit starter or circuit ECU non turbo models crankshaft or position sensor circuit starter or circuit ECU turbo models Engine Speed RPM sensor above Distributor or circuit ignitor or 1000 RPM circuit starter or circuit ECU non turbo models crankshaft or position sensor circuit starter or circuit ECU turbo models 14 Ignition reference no signal Ignition coil ignitor or circuit ECU Turbocharger pressure Turbocharger airflow meter ECU Transmission control signal Transaxle ECU or circuit ECU 45 Chapter 5 a pay o 11 11 11 w 14 Toyota Lexus FAULT CODE DEFINITIONS 21 51 ode Possible Cause 21 HO2S front circuit HO2S sensor heater or circuit ECU 25 Mixture control continuously lean Loose ground injector or circuit oxygen sensor or circuit fuel p
48. yone other than the Manufacturer s Technical Service Center Consequential and incidental damages are not recoverable under this warranty Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state No portion of this warranty may be copied or duplicated without the expressed written permission from the Manufacturer TECHNICAL ASSISTANCE AND WARRANTY SERVICE 51 Products requiring service should be returned as follows 1 Call the Technical Service Center to obtain a Return Reference Number Package the product carefully to prevent shipping damage Include your name return address and a day contact phone Enclose a copy of the dated sales receipt Describe the problem Ship prepaid to Technical Service Center 17291 Mt Herrmann Street Fountain Valley CA 92708 U S A For Technical Assistance Warranty Service contact us at Phone USA amp Canada 1 800 544 4124 Others 714 241 6805 Fax 714 432 7910 Web www iEquus com Email service iEquus com Chapter 7 Warranty and Service Chapter 7 52 3173 IMPORT COMPUTER CODE READER BACK COVER

3173 import computer code reader (front cover)

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