PZEV Model

DTC P2649: Rocker Arm Oil Control Solenoid A (Intake Valve Side) Circuit High Voltage (PZEV model)

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
4. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2649 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at rocker arm oil control solenoid A and the PCM.

5. Turn the ignition switch to LOCK (0).
6. Disconnect the rocker arm oil control solenoid A 2P connector.
7. Connect rocker arm oil control solenoid A 2P connector terminal No. 2 to body ground with a jumper wire.






8. Turn the ignition switch to ON (II).
9. Select the VTEC TEST in the INSPECTION MENU, and do the Solenoid Valve ACTIVATION of the ROCKER ARM SOLENOID A with the HDS.

Does the RETURN SIGNAL indicate ON when the COMMAND is turned OFF?

YES - Go to step 10.

NO - Go to step 14.

10. Turn the ignition switch to LOCK (0).
11. Jump the SCS line with the HDS.
12. Disconnect PCM connector B (49P).
13. Check for continuity between PCM connector terminal B35 and body ground.

NOTE: Do not remove the jumper wire from the rocker arm oil control solenoid A connector.






Is there continuity?

YES - Check for poor connections or loose terminals at the PCM and rocker arm oil control solenoid A, then go to step 25.

NO - Repair open in the wire between the PCM (B35) and rocker arm oil control solenoid A, then go to step 19.

14. Turn the ignition switch to LOCK (0).
15. Connect rocker arm oil control solenoid A 2P connector terminals No. 1 and No. 2 with a jumper wire.






16. Turn the ignition switch to ON (II).
17. Select the VTEC TEST in the INSPECTION MENU, and do the Solenoid Valve ACTIVATION of the ROCKER ARM SOLENOID A with the HDS.

Does the RETURN SIGNAL indicate ON when the COMMAND is turned OFF?

YES - Repair open in the wire between rocker arm oil control solenoid A terminal No. 1 and G101, then go to step 18.

NO - Replace the rocker arm oil control valve, then go to step 18.

18. Turn the ignition switch to LOCK (0).
19. Reconnect all connectors.
20. Turn the ignition switch to ON (II).
21. Reset the PCM with the HDS.
22. Do the PCM idle learn procedure. Programming and Relearning
23. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2649 indicated?

YES - Check for poor connections or loose terminals at rocker arm oil control solenoid A and the PCM, then go to step 1.

NO - Go to step 24.

24. Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 23, go to the indicated DTCs troubleshooting.

NO - If the screen indicates FAILED, go to step 1 and recheck. If the screen indicates NOT COMPLETED, keep idling until a result comes on.

25. Reconnect all connectors.
26. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
27. Start the engine, and let it idle.
28. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2649 indicated?

YES - Check for poor connections or loose terminals at rocker arm oil control solenoid A and the PCM. If the PCM was updated, substitute a, known-good PCM, then recheck. If the PCM was substituted, go to step 1.

NO - Go to step 29.

29. Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other Temporary DTCs or DTCs were indicated in step 28, go to the indicated DTCs troubleshooting.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at rocker arm oil control solenoid A and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep idling until a result comes on.