Is there 14-30 W at room temperature?
YES - Go to 8.
NO - Go to 12.
| DTC P2649: | Rocker Arm Oil Control Solenoid Circuit High Voltage |
| 1. | Turn the ignition switch ON (II). |
| 2. | Clear the DTC with the HDS. |
| 3. | Start the engine. Hold the engine speed at 3,000 rpm (min-1) without load (in neutral) 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 5. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Disconnect the rocker arm oil control solenoid 2P connector. |
| 7. | Measure resistance between the rocker arm oil control solenoid 2P connector terminals No. 1 and No. 2.
Is there 14-30 W at room temperature? YES - Go to 8. NO - Go to 12. |
| 8. | Check for continuity between rocker arm oil control solenoid 2P connector terminal No. 2 and body ground.
 2P CONNECTOR Is there continuity? YES - Go to 9. NO - Repair open in the wire between the rocker arm oil control solenoid and G101, then go to 13. |
| 9. | Jump the SCS line with the HDS. |
| 10. | Disconnect ECM connector B (44P). |
| 11. | Check for continuity between ECM connector terminal B34 and rocker arm oil control solenoid 2P connector terminal No. 1.
 Is there continuity? YES - Go to 19. NO - Repair open in the wire between the ECM (B34) and the rocker arm oil control solenoid, then go to 13. |
| 12. | Replace the rocker arm oil control valve. |
| 13. | Reconnect all connectors and the battery. |
| 14. | Turn the ignition switch ON (II). |
| 15. | Reset the ECM with the HDS. |
| 16. | Do the ECM idle learn procedure. |
| 17. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P2649 is indicated, check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to 18. |
| 18. | Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete.n NO - If the screen indicates FAILED, go to 1 and recheck. If the screen indicates NOT COMPLETED, go to 16 and recheck. |
| 19. | Update the ECM if it does not have the latest software, or substitute a known-good ECM. |
| 20. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P2649 is indicated, check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM.n |