Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- 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 PCM.
- Check for poor connections or loose terminals at these locations: CMP sensor A PCM Engine ground Body ground Are the connections and the 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»(ref-371354-S35997498192010091000000) ). Is the pulser plate damaged? YES -Replace the CMP sensor A pulser plate (see «CMP PULSE PLATE A REPLACEMENT»(ref-371354-S35997498192010091000000) ), 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»(ref-371377-S30539781232010091000000) ).
- Turn the ignition switch to ON (II).
- Reset the PCM with the HDS.
- Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-371367-S09688273002010091000000) ).
- Start the engine, and let it idle for 10 seconds.
- Check for Pending or Confirmed DTCs with the HDS. Is DTC P0344 indicated? YES -Check for poor connections or loose terminals at CMP sensor A and the PCM, then Go to step 1 . NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.