Acura TSX / Honda Accord CL. Manual — part 610

Fig. 75: Checking For Continuity Between ECM/PCM Connector Terminal A6 & Body
Ground

16. Turn the ignition switch OFF.

17. Replace CMP sensor B (see ECT SENSOR REPLACEMENT ).

18. Turn the ignition switch ON (II).

19. Reset the ECM/PCM with the HDS.

20. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

21. Start the engine.

22. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0365 is indicated, check for poor connections or loose terminals at CMP
sensor B and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO: Troubleshooting is complete.

23. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

HOW TO SUBSTITUTE THE ECM/PCM ).

24. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0365 is indicated, check for poor connections or loose terminals at CMP
sensor B and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO: If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was
substituted, replace the original ECM/PCM (see HOW TO REMOVE THE ECM/PCM
FOR TESTING ).

DTC P0369: CMP SENSOR B INTERMITTENT INTERRUPTION

1. Note the following freeze data.

z

Engine speed

z

Vehicle speed

2. Clear the DTC with the HDS.

3. Start the engine, and let it idle for 10 seconds.

4. Check the CMP NOISE B COUNT in the DATA LIST with the HDS.

Are 0 counts indicated?

YES: Go to step 7 .

NO: Go to step 5.

5. Test-drive the vehicle for several minutes in the range of the recorded freeze data.

6. Check the CMP NOISE B COUNT in the DATA LIST with the HDS.

Are 0 counts indicated?

YES: Go to step 7.

NO: Intermittent failure, system is OK at this time. Check for poor connections or loose
terminals at CMP sensor B and the ECM/PCM.

7. Check for poor or loose connections and terminals at these locations:

z

CMP sensor B

z

ECM/PCM

z

Engine ground

z

Body ground

Are the connections and terminals OK?

YES: Go to step 8.

NO: Repair the connectors or terminals, then go to step 11 .

8. Check for damage on the CMP sensor B pulse plate (see CMP PULSE PLATE B REPLACEMENT ).

Is the pulse plate damaged?

YES: Replace the CMP sensor B pulse plate (see CMP PULSE PLATE B
REPLACEMENT ), then go to step 11 .

NO: Go to step 9.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

9. Turn the ignition switch OFF.

10. Replace CMP sensor B (see ECT SENSOR REPLACEMENT ).

11. Turn the ignition switch ON (II).

12. Reset the ECM/PCM with the HDS.

13. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

14. Start the engine, and let it idle for 10 seconds.

15. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0369 is indicated, check for poor connections or loose terminals at CMP
sensor B and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO: Troubleshooting is complete.

DTC P0563: ECM/PCM POWER SOURCE CIRCUIT UNEXPECTED VOLTAGE

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF.

4. Wait 10 seconds.

5. Turn the ignition switch ON (II).

6. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Is DTC P0563 indicated?

YES: Go to step 7.

NO: Intermittent failure, system is OK at this time. Check for poor connections or loose
terminals at the No. 8 ECU (ECM/PCM) (15A) fuse in the underhood fuse/relay box, PGM-
FI main relay 1, and the ECM/PCM.

7. Turn the ignition switch OFF.

8. Jump the SCS line with the HDS.

9. Disconnect ECM/PCM connector E (31P).

10. Measure voltage between ECM/PCM connector terminal E7 and body ground.

Is there battery voltage?

YES: Go to step 13 .

NO: Go to step 11.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

Fig. 76: Measuring Voltage Between ECM/PCM Connector Terminal E7 & Body Ground

11. Remove the left kick panel (see TRIM REMOVAL/INSTALLATION - DOOR AREA ), then remove

PGM-FI main relay 1 (FI MAIN) (A) from the under-dash fuse/relay box.

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX