DTC P0344: CMP Sensor Intermittent Interruption
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS.
- Start the engine, and let it idle 10 seconds.
- Check the CMP NOISE 2 count in the DATA LIST with the HDS.
Are 0 counts indicated?
YES - Go to step 7.
NO - Go to step 5.
- Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED
- VSS
- Check the CMP NOISE 2 count in the DATA LIST with the HDS.
Are 0 counts indicated?
YES - Go to step 7.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor and the PCM
- Check for poor or loose connections at these connectors and terminals:
- CMP sensor
- PCM
- Engine ground
- Body ground
Are the connections OK?
YES - Go to step 8.
NO - Reconnect or repair the connectors or terminals, then go to step 11.
- Check for damage to the CMP sensor pulse projection on the front camshaft pulley (see CMP SENSOR REPLACEMENT
).
Is there damage?
YES - Replace the front camshaft pulley (see CAMSHAFT, ROCKER ARM ASSEMBLY, CAMSHAFT SEAL, AND PULLEY INSTALLATION ), then go to step 11.
NO - Go to step 9.
- Turn the ignition switch OFF.
- Replace the CMP sensor (see CMP SENSOR REPLACEMENT ).
- Turn the ignition switch ON (II).
- Reset the PCM with the HDS.
- Clear the CKP pattern with the HDS.
- Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
- Do the CKP pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN ).
- Start the engine, and let it idle 10 seconds.
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0344 indicated?
YES - Check for poor connections or loose terminals at the CMP sensor and the PCM, then go to step 1.
NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting