Chapter 4 Acura - Snap-on
Contents
1. 29 Testing Antilock Brake Systems ABS Cc Figure 4 29 1990 93 Integra ABS controller and service check connector locations A 4 door B 3 door C Access cover Figure 4 30 1996 97 SLX ABS controller and service check connector locations A Jump pin 4 to pin 12 B DLC 4 3 2 ABS Codes and Data Testing e ABS MAIN MENU on page 30 e CODES amp DATA MENU on page 31 e DATA NO CODES on page 31 e CODE ONLY on page 32 e CLEAR CODE on page 32 ABS MAIN MENU After selecting ABS from the System Selection menu the MAIN MENU ABS is displayed Figure 4 31 Selections vary by model and year 30 MAIN MENU gt CODES amp DATA MENU CUSTOM SETUP MOVIES TROUBLESHOOTER Figure 4 31 Typical ABS main menu The following main menu selections are discussed e CODES amp DATA MENU on page 31 e MOVIES CUSTOM SETUP and TROUBLESHOOTER are discussed in detail in the user s manual for your diagnostic tool CODES amp DATA MENU When CODES amp DATA MENU is selected the following is displayed Figure 4 32 CODES amp DATA MENU gt DATA NO CODES REVIEW CODES CODE ONLY PRINT CODES CLEAR CODE Figure 4 32 Typical ABS CODES amp DATA MENU e DATA NO CODES This selection begins communication with the ABS module and displays data parameters e CODE ONLY When selected ABS trouble codes are gathered and displayed e CLEAR CODES This selection clears ABS memo2. Integra D LED display Figure 4 24 shows common transmission diagnostic connector locations for Acura vehicles 26 Refer to Table 4 5 to determine which adapter to use to test a specific model Figure 4 24 Common transmission connector locations for 1995 2003 vehicles Table 4 5 Common connector locations VEHICLE YEAR SCS 2 PIN DLC 3 PIN DLC 16 PIN 2 2 CL 1997 3 5 2 3 CL 1998 99 3 5 2 5 TL 1995 98 2 5 3 0 CL 1997 99 3 5 rn 2001 02 5 2003 7 1996 98 2 5 3 2 TL 1999 02 5 2003 7 3 5 RL 1996 2003 2 5 Integra 1996 2001 1 MDX 2001 04 NSX 1995 2003 1 3 RSX 2002 04 7 SLX 1996 99 6 TSX 2004 3 2 TL 2004 NSX T 2004 3 5 RL 2004 3 5 Remove ashtray Remove the DLC cover 27 28 Testing Transmission Systems NOTE i To retrieve codes with the scan tool use the 16 pin connector To retrieve codes manually use the SCS connector 4 2 2 Manual Code Reading Transmission Codes There are 2 types of manual transmission codes Type 02 see Figure 4 25 and Table 4 6 on page 28 Type 03 see Figure 4 26 and Table 4 7 on page 28 Key On Pulse Code 5 Code Repeats Figure 4 25 Acura transmission Code Type 02 Table 4 6 Acura transmission Code Type 02 Pattern Straight count Read codes on Red LED on TCM Start codes by Turn the ignition on When done Turn the ignition off then clear codes Onl
3. second pulses and flash again if code is greater than 1 add the flashes together for sub code When done Clear codes Computer can store up to 3 most recent codes If the SCS connector is shorted and SRS has no stored DTC it s normal to see the SRS light remain on continuously 1995 96 2 5 TL models are different if no DTCs are stored the SRS lamp will flash continuously without pausing 37 38 Testing Supplemental Restraint Systems SRS 4 4 2 Code Clearing SRS Codes P To clear DTCs from the SRS unit on all models except SLX and NSX 1 2 Switch the ignition off Connect the SCS service connector Acura 07PAZ 0010100 to the yellow 2 pin MES connector Figure 4 45 on page 38 A jumper wire can be used as long as you maintain good contact between the terminals Switch the ignition on The SRS indicator lamp lights for about 6 seconds then switches off Remove the SCS service connector from the MES connector within 4 seconds of the lamp switching off When the SRS indicator lamp lights again connect the SCS service connector to the MES connector within 4 seconds of the lamp switching on When the SRS indicator lamp switches off remove the SCS service connector from the MES connector within 4 seconds The SRS lamp flashes twice to indicate memory has been erased Switch the ignition off and wait ten seconds Figure 4 45 SCS Service Connector OEM 07PAZ 0010100 or use jumper wi
4. 1 3 RSX 2002 04 7 SLX 1996 99 6 3 2 TL 2004 6 NSX 2004 2 3 TSX 2004 6 3 5 RL 2004 3 5 Remove ashtray Remove the DLC cover 4 1 2 ECM Locations 1986 to 1990 with ECM LED me Figure 4 5 LED Locations Table 4 2 LED locations VEHICLE YEAR LED LOCATION Integra 1986 89 1 Legend Sedan 1986 90 2 A B Figure 4 6 Acura data link connector DLC locations A 1995 2 5 3 2 TL B 1995 NSX C 16 pin Data Link Connector DLC Use OBD II adapter 19 Testing Engine Systems Figure 4 7 Acura DLC and adapter A 16 pin DLC B OBD Il adapter Figure 4 8 Acura control module locations for LED code flashers A 1986 89 Integra 1986 90 Legend Sedan B 1990 91 Integra 1987 90 Legend Coupe M B 1991 94 NSX 1991 95 Legend He 1992 95 Vigor 1993 95 Integra Figure 4 9 Acura check connector locations for Check Engine Lamp code flashers A Service check connector B Jump wire C ECM D TCM 20 4 1 3 SCS mode Purpose of SCS Service Check Signal mode e Enables a diagnostic mode e Flash out DTCs stored for the PCM ABS TCS and SRS modules e Code clearing on certain ABS systems e Bypass two trip detection mode for ODB II drive cycles NOTE i Certain OBD II vehicles use a separate 2 pin SCS connector Other ODB II models use a SCS pin in the 16 PIN DLC Both function the same way For specific applications refer to Code Re
5. Acura This chapter contains information for testing Acura vehicles with the Asian Import Vehicle Communication Software VCS The following Acura systems may be available for testing Engine Transmission Antilock Brake System ABS Airbag SRS 4 1 Testing Engine Systems Acura engine system testing includes Code Reading Connectors and Locations on page 17 ECM Locations 1986 to 1990 with ECM LED SCS mode on page 21 Code Type on page 24 Manual Code Reading Engine Codes on page 24 Multiple Codes on page 25 4 1 1 Code Reading Connectors and Locations Refer to Figure 4 1 for common diagnostic connector locations for Acura vehicles Connector configurations are shown in Figure 4 2 Figure 4 3 and Figure 4 4 Figure 4 1 Common connector locations 17 18 Testing Engine Systems 4 5 6 7 8 L BI Figure 4 2 OBD II data link connector DLC Gl Figure 4 3 3 pin DLC Refer Table 4 1 to determine which adapter to use to test a specific model Table 4 1 Common connector locations Figure 4 4 2 pin service check signal SCS connector VEHICLE YEAR SCS 2 PIN DLC 3 PIN DLC 16 PIN 2 2 CL 1997 3 5 2 3 CL 1998 99 3 5 2 5 TL 1995 98 2 5 3 0 CL 1997 99 3 5 32 CL 2001 02 5 2003 7 1996 98 2 5 3 2 TL 1999 2002 5 2003 7 3 5 RL 1996 2003 2 5 egra 1992 95 1 1 1996 2001 1 4 MDX 2001 04 7 NSX 1995 2003
6. BS B2 15A fuse in the ABS fuse box for 10 seconds NSX only Remove 2 and 3 ABS fuse for 10 seconds 35 Testing Supplemental Restraint Systems SRS 1 Sec 1 Sec 2 1 1 1 1 1 l 1 l l I I Code 43 f Code 52 Code 2 Ignition On Figure 4 42 Acura ABS Code Type 12 Table 4 12 Acura ABS Code Type 12 Pattern Main code and sub code Read codes on Red LED on antilock brake controller Start codes by Turn the ignition on When done Turn the ignition off then clear codes Only one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes 4 4 Testing Supplemental Restraint Systems SRS Testing Acura supplemental restraint systems SRS or airbag systems includes e Manual Code Reading SRS on page 36 e Code Clearing SRS Codes on page 38 4 4 1 Manual Code Reading SRS There are 2 types of manual SRS codes e Type 06 see Figure 4 43 and Table 4 13 on page 37 e Type 07 see Figure 4 44 and Table 4 14 on page 37 0 1 Sec 1 2 Sec 0 3 Sec and ae I i 1 5 p i La Start of Next Code Key On 110 110 1 i 1 _ _ P _ I I pulse 40s Digit 1sDigit gt t 520 2 Sub lt i Main Code gt iCode Main Sub Code 22 3 Figure 4 43 Acura SRS Code Type 06 36 Table 4 13 Acura SRS Code Type 06 Pattern Mai
7. ading Connectors and Locations on page 17 Models with a separate 2 pin SCS connector CODES MENU HOW TO GET CODES MANUAL CODE ENTRY CLEAR CODES JUMP 2 PIN SERVICE CONNECTOR UNDER GLOVE BOX CODE FLASH ONE TIME PER IGNITION CYCLE ABS LAMP FLASH CODE CODE TYPE 04 Figure 4 10 Typical screen menu for the 2 pin SCS Use jumper or Honda tool O E 407PAZ 0010100 21 Testing Engine Systems Models with the SCS in the 16 pin DLC Pressing Y grounds the appropriate pin of the DLC which enables the SCS mode NOTE The K 18 key must be used for SCS mode MAIN MENU ENGINE CUSTOM SETUP CODES amp DATA MENU TROUBLESHOOTER SCS MODE MOVIES Figure 4 11 Typical Engine Main Menu SCS MENU SCS MODE SCS HELP Figure 4 12 SCS Menu The SCS help briefly explains the two trip bypass operation PCM only see the section on Two trip detection bypass ABS code reading message typical using SCS mode SELECT SCS MODE FOLLOW ON SCREEN INSTRUCTIONS ABS LAMP FLASHES CODES SEE MANUAL FOR CODE TYPE INFORMATION CODE TYPE 04 Figure 4 13 ABS code reading message typical using SCS mode ABS code clearing using SCS mode certain 1997 and later models When instructed by the scanner ABS codes may be cleared using the SCS mode HOLD BRAKE ON amp CYCLE IGNITION ON WHEN ABS LAMP GOES OFF RELEASE BRAKE WHEN LAMP COMES ON HOLD BRAKE AGAIN RELEASE BRK WHEN LAMP GOES OFF MORE Figure 4 14 ABS cleari
8. cleared For 2003 2004 RL Press parking brake pedal Push VSA OFF switch hold it then turn ignition on Hold VSA switch for 3 5 seconds then release VSA switch After 3 seconds the VSA indicator should blink 4 times This signals that the codes have been cleared For 2003 04 NSX With the SCS shorted press the brake pedal and cycle ignition on After the ABS indicator goes off release the brake pedal After the ABS indicator comes back on depress brake pedal again After the ABS indicator goes off again release the brake pedal After a few seconds the ABS indicator will blink twice and the DTC is cleared Turn ignition off and un short the SCS connector For other models With the SCS shorted cycle key on with brake pedal pressed ABS light will turn on then shut off release pedal and light will turn on press brake pedal until light turns off and release pedal F 3 2 Sec ps Sec i 2 Sec g 0 4 Sec I I I I I i i 1 I I i 1 Repeats Repeats 1 Repeats l i Repeats i 1 3 Tmes i 3 Tmes i 3 Tmes 3 Tmes j Li l Li l i Current Current History H History Code 12 i Code 23 Code 13 Code 25 Begin I I Begin I I I I I 1 I I I I Figure 4 40 Acura ABS Code Type 5a Table 4 10 Acura ABS Code Type 5a Pattern 10s and 1s Read codes on ABS warning lamp Start codes by After bringing the vehicle to a complete stop and making sure the brake pedal is not depre
9. egra Figure 4 18 Data connector from the wire side Honda numbering not the same as SAE 23 24 Testing Engine Systems View From Terminal Side Figure 4 19 Data connector from terminal side SAE standard pin numbering 4 1 4 Code Type For those systems that rely on manual code reading you must interpret a DTC from a flashing indicator lamp The code flash sequence varies by model and system The Scanner therefore refers you to a certain code type i e COPE TYPE 03 Code type is a specific labeling system that identifies the appropriate section in this manual for each subsystem 4 1 5 Manual Code Reading Engine Codes There are 2 types of manual engine codes e Type 02 see Figure 4 20 and Table 4 3 e Type 03 see Figure 4 21 and Table 4 4 Key On Pulse Code 5 Code Repeats Figure 4 20 Acura engine Code Type 02 Table 4 3 Acura engine Code Type 02 Pattern Long and short Read codes on Red LED on ECU Start codes by Turn the ignition on When done Turn the ignition off and clear codes Only one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes First Digit Second Digit Code Code 25 Repeats Figure 4 21 Acura engine Code Type 03 Table 4 4 Acura engine Code Type 03 Pattern Long and short Read codes on Red LED on ECM except most 1991 and later flash codes on CHECK
10. engine lamp on dash Start codes by Turn the ignition on except most 1991 and later jumper the check connector then turn the ignition on When done Turn the ignition off and clear codes Only one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes 4 1 6 Multiple Codes The 1990 and later Integra and the 1991 Legend and NSX pulse multiple codes with a 2 second pause between each code All other Acura models including the 1990 Legend with an ECM do not have multiple code memory P To read codes for vehicles without multiple code capability S Peo eS Read the trouble code Fix the problem Reset the ECM Drive the vehicle Check the LED for a new code Continue until no codes are present 4 2 Testing Transmission Systems These instructions for reading manual codes only apply to 2001 and earlier models 2002 and later models have CODES amp DATA selections available from the MAIN MENU 4 2 1 Code Reading Connector Locations Figure 4 22 and Figure 4 23 provide diagnostic connector locations and adapter information 25 Testing Transmission Systems Figure 4 22 1991 95 NSX 1992 95 Vigor transmission service check connector locations A Service check connector B Jump wire Figure 4 23 Acura transmission service check connector locations A 1987 90 Legend Coupe B 1988 90 Legend Sedan C 1990 95
11. ition on When done Turn the ignition off then clear codes Only one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes 33 34 Testing Antilock Brake Systems ABS 1 3 Sec 0 4 Sec 20 36 1 3 0 9ec Sec iY M Sec lt lt it t Start of Next Code Key On 3 gt we 4 gt Pulse i fees i ie Code 34 1 Figure 4 39 Acura ABS Code Type 04 Table 4 9 Acura ABS Code Type 04 Pattern 10s and 1s Read codes on ABS warning lamp Start codes by For 2003 04 NSX Short SCS connector and turn key on do not press brake pedal ABS indicator will stay on for 2 seconds then turn off Main code will flash then pause 0 4 seconds sub code will flash and pause 3 6 seconds If a DTC is not available the ABS lamp will go off for 3 6 seconds then come back on For other models Short SCS connector and turn key on ABS indicator light will stay on for 2 seconds then turn off main code will flash then pause 0 4 seconds sub code will flash and pause 3 6 seconds stored codes will flash only one time per ignition cycle cycle key at least once to verify codes Clear codes For 2000 02 3 5 RL Press parking brake pedal with SCS shorted hold VSA switch in the off position and turn the ignition on hold for 3 5 seconds until VSA light blinks 4 times this signals that codes have been
12. n code and sub code Read codes on SRS warning lamp Start codes by Short the SCS connector and turn key on SRS warning lamp will turn on then turn off after 3 0 seconds if the code is greater than 10 four quick flashes 0 1 seconds each 10 main code will flash and pause 2 0 seconds and flash again if code is greater than 1 after a 2 0 second pause sub code will now flash in 0 3 second pulses followed by more flashes if code is greater than 1 When done Clear codes If the SCS connector is shorted and SRS has no stored DTC it s normal to see the SRS light remain on continuously Computer can store up to 3 most recent codes The SCS is part of the 16 pin DLC ground pin 9 to activate 3 5 RL only SCS connector is separate from the 16 pin DLC The 2 pin SCS connector is located under the glove box 1 2 Sec 0 3 Sec l 2 0 l i i l 2 0 i f Sec ty l l Sec Start of Next Code Key On DEE PERN Pulse l hae Code 23 gt Figure 4 44 Acura SRS Code Type 07 Table 4 14 Acura SRS Code Type 07 Pattern Main code and sub code Read codes on SRS warning lamp Start codes by Short the SCS connector and turn key on SRS warning lamp will turn on then turn off after 2 0 seconds main code will flash pause 1 2 seconds and flash again if code is greater than 1 add the flashes together for main code after a 2 0 second pause sub code will now flash in 0 3
13. ng using SCS mode SOME VEHICLES MAY REQUIRE TO BE DRIVEN ABOVE 7 MPH TO COMPLETE CODE CLEARING PROCEDURE Figure 4 15 ABS clearing using SCS mode 22 AIRBAG code reading message typical using SCS mode SELECT SCS MODE FOLLOW ON SCREEN INSTRUCTIONS SRS LAMP FLASHES CODES SEE MANUAL FOR CODE TYPE INFORMATION CODE TYPE 06 Figure 4 16 AIRBAG code reading message typical using SCS mode AIRBAG code clearing message typical OR CENTER CONSOLE SEE SMALL REFERENCE FIND YELLOW MES CONNECTOR IN FUSE BOX MANUAL FOR DETAILED CLEAR CODES PROCEDURE Figure 4 17 AIRBAG code clearing message typical see code clearing section in this manual NOTE The MES Message Erase Slgnal connector is not the same as the SCS connector Two trip detection bypass Use SCS mode to bypass ODB two trip detection and re create certain DTCs during diagnosis Some codes require a back driving sequence two road tests where the fault must occur in a similar operating condition NOTE On ODB II vehicles with the separate 2 pin SCS connector jumper the 2 pin connector for the SCS mode functions A DTC can be captured in one driving event by connecting the scanner and selecting SCS mode from the main menu on applicable vehicles For scan data usage during SCS mode manually jump the DLC from the backside while the scanner is connected to the DLC B 1991 94 NSX 1991 95 Legend Fd 1992 95 Vigor 1993 95 Int
14. re equivalent 4 seconds or Less Connected Disconnected gt lt _ U a Q a Figure 4 46 SRS code clearing A SRS indicator lamp B MES connector terminals 1996 1998 3 2 TL 1996 2004 3 5 RL 1999 2003 3 2 TL 2001 2003 3 2 CL x 2002 2004 RSX Figure 4 47 Acura OBD II SRS MES connector 1 of 2 A Memory Erase Signal MES 2P connector B SCS Service connector Acura 07PAZ 0010100 39 Testing Supplemental Restraint Systems SRS Figure 4 48 2004 TSX TL SRS code clearing left side of dash A MES connector B SCS service connector Acura 07PAZ 0010100 1997 2 2 CL 1997 1999 3 0 CL 1998 1999 2 3 CL 2001 2004 MDX Figure 4 49 Acura OBD II SRS MES connector location 2 of 2 A MES 2P connector B SCS Service connector Acura 07PAZ 0010100 40
15. ry codes from the ABS ECM memory e REVIEW CODES This selection allows you to view codes This menu item appears only after code gathering e PRINT CODES This selection allows you to print codes This menu item appears only after code gathering DATA NO CODES This section has information on viewing ABS data using the scan tool P To enter and exit ABS data 1 Enter in the vehicle ID 2 Turn the ignition on 3 Select DATA NO CODES 4 Turn the ignition off after completing the ABS data tests ABS DATA LF WHEEL MPH 0 RE WHEEL MPH 0 LR WHEEL MPH 0O RR WHEEL MPH 0 BRAKE SW OFF ABS PUMP MOTOR OFF Figure 4 33 Typical ABS DATA display 31 32 Testing Antilock Brake Systems ABS CODE ONLY This section has information on retrieving ABS codes using the scan tool To gather codes 1 Select CODES ONLY A key on verification screen displays Make sure the ignition is switched on 2 Press Y to continue A screen will appear while the scan tool communicates with the vehicle Figure 4 34 INITIALIZING COMMUNICATION ONE MOMMENT PLEASE Figure 4 34 Typical ABS code reading screen message NOTE The INTIALIZING COMMUNICATION screen means the scan tool is attempting to start the test however it does not mean the vehicle has responded If the message stays on the screen more than a few minutes the test did not start If no codes are detected during the test a P0000 no fault
16. s present message displays 3 The CODE LIST screen appears Figure 4 35 CODE LIST 12 3 WHEEL SPEED SENSOR CIRCUIT OPEN END OF LIST Figure 4 35 Typical ABS codes message CLEAR CODE This section has information on clearing ABS codes using the scan tool P To clear codes 1 Select CLEAR CODES A key on verification screen displays Make sure the ignition is switched on 2 Press Y to continue A code clearing confirmation screen displays Figure 4 36 DTC ERASE ROUTINE KOEO ARE YOU SURE PRESS Y OR N Figure 4 36 Typical ABS code clearing screen message 3 Press Y to clear ABS codes or N to cancel the operation 4 The DTCs CLEARED screen appears Figure 4 37 Press Y or N to exit DTCs CLEARED PRESS Y OR N Figure 4 37 Typical ABS codes cleared screen message 4 3 3 Manual Code Reading ABS Codes and Clearing Codes There are several types of manual codes for Acura ABS e Type 02 see Figure 4 38 and Table 4 8 on page 33 e Type 04 see Figure 4 39 and Table 4 9 on page 34 e Type 5a see Figure 4 40 and Table 4 10 on page 35 e Type 06 see Figure 4 41 and Table 4 11 on page 35 e Type 12 see Figure 4 42 and Table 4 12 on page 36 First Digit Second Digit Code Code 25 Repeats Figure 4 38 Acura ABS Code Type 02 Table 4 8 Acura ABS Code Type 02 Pattern Straight count Read codes on ABS lamp on dash Start codes by Jumper the check connector then turn the ign
17. ssed turn the ignition switch to the off position Connect terminals 12 and 4 on the OBD II 16 pin DLC Turn the ignition switch to the ON position Clear codes by Within three seconds after entering the diagnostic mode pulsate the brake switch on and off at least six times When done Turn the ignition off disconnect connectors then clear codes All codes repeat three times and are followed by a 1 2 second pause Code 12 always flashes first to confirm the system is in the diagnostic mode Any current codes follow code 12 Code 13 indicates the presence of history codes which then follow If only history codes are present the diagnostic sequence will first flash code 12 then code 13 followed by the history codes The code display cycle repeats as long as the system is in the diagnostic state 1 3 Sec 36 i 1 30 i Sec iy 1 Sec Start of E EA si Next Code Key On 3 St Pulse k Aa l ie Code 32 gt Figure 4 41 Acura ABS Code Type 06 Table 4 11 Acura ABS Code Type 06 Pattern Main code and sub code Read codes on ABS warning lamp Start codes by Short the SCS connector and turn key on ABS indicator light will stay on for 2 seconds then turn off main code will flash then pause 1 second sub code will flash and pause 5 seconds stored codes will flash only one time per ignition cycle cycle key at least once to verify codes When done To clear codes remove A
18. y one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes First Digit Second Digit Code Code 25 Repeats Figure 4 26 Acura transmission Code Type 03 Table 4 7 Acura transmission Code Type 03 Pattern Long and short Read codes on Red LED on TCM or gear indicator lamp on dash Turn the ignition on except for 1991 and later Vigor Legend and NSX jumper Starticodes Dy the check connector then turn the ignition on When done Turn the ignition off then clear codes Only one code displays at a time except on some late model cars After repairs clear codes and test drive then check for other codes 4 3 Testing Antilock Brake Systems ABS Acura antilock brake system ABS testing includes the following e Code Reading Connectors and Locations on page 29 e ABS Codes and Data Testing on page 30 e Manual Code Reading ABS Codes and Clearing Codes on page 33 4 3 1 Code Reading Connectors and Locations Diagnostic connector locations and test adapter information for Acura ABS are shown in Figure 4 27 Figure 4 28 and Figure 4 29 FN w Figure 4 27 1991 95 NSX 1992 94 Vigor 1991 94 Legend ABS controller and service check connector locations A ABS indicator lamp B Service check connector C Jump wire Figure 4 28 1986 90 Legend ABS controller and service check LED location
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