DTC P0344: CMP Sensor A Circuit Intermittent Interruption
- Turn the ignition switch to ON (II)
- Clear the DTC with the HDS
- Start the engine, and let it idle for 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 A NOISE 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 connections or terminals, then go to step 11
- Check for damage on the CMP sensor A pulser plate (see
CMP PULSE PLATE A REPLACEMENT
)
Is the pulser plate damaged?
YES -Replace the CMP sensor A pulser plate (see CMP PULSE PLATE A REPLACEMENT ), then go to step 11
NO -Go to step 9
- Turn the ignition switch to LOCK (0)
- Replace CMP sensor A (see CMP SENSOR A REPLACEMENT ).
- Turn the ignition switch to ON (II)
- Reset the ECM/PCM with the HDS
- Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE )
- Start the engine, and let it idle for 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 DTC's troubleshooting