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DTC P0341 - CMP Sensor Circuit Performance

  1. Perform On-Board Diagnostic (OBD) System Check. Read and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. Go to next step.
  2. Turn ignition on. Using scan tool, read and record FAIL RECORDS data for DTC P0341. Operate vehicle within FAILURE RECORDS conditions. Using scan tool, read SPECIFIC DTC. If scan tool displays DTC P0341 FAILED THIS IGN, go to next step. If scan tool does not display DTC P0341 FAILED THIS IGN, check for an intermittent problem. See TESTS W/O CODES article.
  3. Disconnect CMP sensor. Using a voltmeter, measure voltage between sensor ground circuit and senor voltage reference circuit at CMP sensor harness connector. If reading is 5-6 volts, go to next step. If reading is not as specified, go to step 5).
  4. Measure voltage between CMP sensor signal circuit and sensor ground circuit at CMP sensor harness connector. If reading is 5-7 volts, go to step 11). If reading is not as specified, go to step 8).
  5. If voltage measured in step 3 was less than 5-6 volts, go to next step. If voltage in step 3 was greater than 5-6 volts, repair short to power in CMP sensor voltage reference circuit. Retest system.
  6. Inspect CMP sensor for poor connections. If a problem is found, repair as necessary. Retest system. If no problem is found, go to next step.
  7. Turn ignition off. Disconnect PCM and CMP sensor harness connectors. Inspect sensor voltage reference circuits for an open between ignition control module and CMP sensor. If a problem is found, repair as necessary. Retest system. If no problem is found, go to step 9).
  8. Turn ignition off. Disconnect PCM harness connectors and leave CMP sensor disconnected. Turn ignition on. Using a DVOM, check CMP sensor signal circuit for an open or short to power. Check CMP sensor signal circuit for a short to ground. If a problem is found, repair as necessary. Retest system. If no problem is found, go to next step.
  9. Check for an open or short in CMP sensor ground circuit. If a problem is found, repair as necessary. Retest system. If no problem is found, go to next step.
  10. Check for poor connection at PCM. If a problem is found, repair as necessary. Retest system. If no problem is found, go to next step.
  11. Reconnect PCM and CMP sensor harness connectors. Using a voltmeter, backprobe sensor connector at CMP signal circuit. Crank engine and monitor voltage. If voltage toggles between zero and 4 volts, replace PCM. Retest system. If voltage is not as specified, leave voltmeter connected and go to next step.
  12. Leaving sensor wiring harness connected, remove CMP sensor. Place a magnet on CMP senor large enough to cover face of sensor. Observe voltmeter. If reading is about zero volts, replace faulty or missing sensor magnet. If reading is not as specified, replace CMP sensor. Retest system.
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