DTC P0344: CMP Sensor A 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 A NOISE 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 A 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 CMP sensor A and the ECM/PCM.
- Check for poor or loose connections and terminals at these locations:
- CMP sensor A
- ECM/PCM
- Engine ground
- Body ground
Are the connections and terminals OK?
YES - Go to step 8.
NO - Repair the connectors or terminals, then go to step 11.
- Check CMP pulse plate A for damage (see CMP PULSE PLATE A REPLACEMENT
).
Is the pulse plate damaged?
YES - Replace CMP pulse plate A (see CMP PULSE PLATE A REPLACEMENT ), then go to step 11.
NO - Go to step 9.
- Turn the ignition switch OFF.
- Replace CMP sensor A (see CMP SENSOR A REPLACEMENT ).
- Turn the ignition switch ON (II).
- Reset the ECM/PCM with the HDS.
- Do ECM/PCM IDLE LEARN PROCEDURE .
- 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 CMP sensor A and the ECM/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.