Acura TSX / Honda Accord CL. Manual — part 634

12. Test the VTC oil control solenoid valve (see VTC OIL CONTROL SOLENOID VALVE

REMOVAL/TEST/INSTALLATION ).

Is the VTC oil control solenoid valve OK?

YES: Go to step 13.

NO: Replace the VTC oil control solenoid valve (see VTC OIL CONTROL SOLENOID
VALVE REMOVAL/TEST/INSTALLATION ), then go to step 14 .

13. Inspect the VTC actuator (see VTC ACTUATOR INSPECTION ).

Is the VTC actuator OK?

YES: Go to step 14.

NO: Replace the VTC actuator (see VTC ACTUATOR, EXHAUST CAMSHAFT
SPROCKET REPLACEMENT ), then go to step 14.

14. Turn the ignition switch ON (II).

15. Reset the ECM/PCM with the HDS.

16. Clear the CKP pattern with the HDS.

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

18. Do the CKP pattern learn procedure (see CKP PATTERN CLEAR/CKP PATTERN LEARN

PROCEDURE ).

19. Do the VTC TEST in the INSPECTION MENU with the HDS.

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

Are any Temporary DTCs or DTCs indicated?

YES: If DTC P0011 is indicated, check for poor connections or loose terminals at the VTC
oil control solenoid valve 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: Go to step 21.

21. Monitor the OBD STATUS for DTC P0341 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES: Troubleshooting is complete.

NO: If the screen indicates FAILED, check for poor connections or loose terminals at the
VTC oil control solenoid valve and the ECM/PCM, then go to step 1 . If the screen indicates
NOT COMPLETED, go to step 19 and recheck.

DTC P0340: CMP SENSOR A NO SIGNAL

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Start the engine.

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

Is DTC P0340 indicated?

YES: Go to step 5.

NO: Intermittent failure, system is OK at this time. Check for poor connections or loose

2004 Acura TSX

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

terminals at CMP Sensor A and the ECM/PCM.

5. Turn the ignition switch OFF.

6. Disconnect the CMP Sensor A 3P connector.

7. Turn the ignition switch ON (II).

8. Measure voltage between CMP Sensor A 3P connector terminal No. 3 and body ground.

Is there battery voltage?

YES: Go to step 9.

NO: Repair open in the wire between the No. 18 ACG (15A) fuse in the under-dash
fuse/relay box and CMP Sensor A, then go to step 19 .

2004 Acura TSX

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

Fig. 8: Measuring Voltage Between CMP Sensor A 3P Connector Terminal No. 3 & Body
Ground

9. Measure voltage between CMP Sensor A 3P connector terminal No. 1 and body ground.

Is there about 5 V?

YES: Go to step 10.

NO: Go to step 11 .

2004 Acura TSX

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

Fig. 9: Measuring Voltage Between CMP Sensor A 3P Connector Terminal No. 1 & Body
Ground

10. Measure voltage between CMP Sensor A 3P connector terminals No. 2 and No. 3.

Is there battery voltage?

YES: Go to step 16 .

NO: Repair open in the wire between CMP Sensor A and G101, then go to step 19 .

2004 Acura TSX

2004 ENGINE PERFORMANCE VTEC/VTC - TSX