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Home >> Pontiac >> 2003 >> Aztek AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0341: Camshaft Position Sensor Circuit Performance >> Diagnostic Procedures
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Diagnostic Procedures

  1. Did you perform the Diagnostic System Check - Engine Controls? If yes, go to next step. If no, see DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM.
  2. Start engine. Observe the CMP sensor signal present parameter with a scan tool. Does scan tool indicate that the CMP sensor signal is present? If yes, go to next step. If no, go to step  4.
  3. Observe the Freeze Frame/Failure Records for this DTC. Turn ignition off for 30 seconds. Start engine. Operate the vehicle within the Conditions for Running the DTC. See CONDITIONS FOR RUNNING DTC . You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition? If yes, go to next step. If no, go to DIAGNOSTIC AIDS .
  4. Turn ignition off. Remove power steering pump. Disconnect the CMP sensor connector. Turn ignition on, with engine off. Probe the 12-volt reference circuit of the CMP sensor harness connector with a test light connected to a good ground. Does the test light illuminate? If yes, go to next step. If no, go to step  8.
  5. Turn ignition off. Jumper the CMP circuits from the CMP sensor to the CMP sensor harness connector. Turn ignition on, with engine off. Measure the Voltage Drop from the low reference circuit of the CMP sensor to a good ground with a DVOM. Is the voltage more than 0.2 volt? If yes, go to step  9. If no, go to next step.
  6. Remove the jumpers from the CMP circuits. Start engine. Observe the CMP sensor signal on the scan tool. Momentarily and repeatedly probe the signal circuit of the CMP sensor with a test light that is connected to battery voltage. Does the CMP sensor signal change when the test light contacts the signal circuit? If yes, go to step  12. If no, go to next step.
  7. Turn ignition on, with engine off. Probe the signal circuit of the CMP sensor harness connector with a test light connected to a good ground. Does the test light illuminate? If yes, go to step  11. If no, go to step  10.
  8. Test the CMP 12-volt reference circuit between the CMP sensor and the PCM for an open or for high resistance. Did you find and correct the condition? If yes, go to step  18. If no, go to step  13.
  9. Test the CMP Low reference circuit between the CMP sensor and the PCM for an open or high resistance. Did you find and correct the condition? If yes, go to step  18. If no, go to step  13.
    10. NOTE: Disconnecting the PCM may remove the short from the circuit.
  10. Test the CMP signal circuit between the CMP sensor and PCM for a open or for a short to ground. Did you find and correct the condition? If yes, go to step  18. If no, go to step  13.
    11. NOTE: Disconnecting the PCM may remove the short from the circuit.
  11. Test the CMP signal circuit between the CMP sensor and PCM for a short to voltage. Did you find and correct the condition? If yes, go to step  18. If no, go to step  13.
  12. Test for an intermittent and for poor connections at the CMP harness connector. Did you find and correct the condition? If yes, go to step  18. If no, go to step  14.
  13. Test for an intermittent and for poor connections at the PCM harness connector. Did you find and correct the condition? If yes, go to step  18. If no, go to step  17.
  14. Remove the CMP sensor. Visually inspect the CMP sensor for physical damage, loose or improper installation. Did you find and correct the condition? If yes, go to step  18. If no, go to next step.
  15. Visually inspect the CMP sensor reluctor wheel for damage. If the CMP reluctor wheel is damaged. Did you find and correct the condition? If yes, go to step  18. If no, go to next step.
  16. Replace CMP sensor. See REMOVAL & INSTALLATION - AZTEC & RENDEZVOUS article. After repairs, go to step  18.
  17. Replace PCM. See REMOVAL & INSTALLATION - AZTEC & RENDEZVOUS article. Reprogram PCM. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After repairs, go to next step.
  18. Clear the DTCs with a scan tool. Turn ignition off for 30 seconds. Start engine. Operate the vehicle within the Conditions for Running DTC. See CONDITIONS FOR RUNNING DTC . Does the DTC run and pass? If yes, go to next step. If no, go to step  2.
  19. Observe the stored information, Capture Info with a scan tool. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
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