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Home >> Pontiac >> 2002 >> Aztek FWD >> 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. Attempt to Start the engine. Does the engine start and run? If yes, go to next step. If no, go to step  4.
  3. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running DTC or within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition cycle? If yes, go to next step. If no, see INTERMITTENT CONDITIONS  under SELF-DIAGNOSTIC SYSTEM.
  4. Turn OFF the ignition. Disconnect the camshaft position (CMP) sensor connector. Turn ON the ignition, with the engine OFF. Probe the 12-volt reference circuit of the CMP sensor harness connector with a test lamp that is connected to a good ground. Does the test lamp illuminate? If yes, go to step  6. If no, go to next step.
  5. Probe the 12-volt reference circuit of the CMP sensor harness connector with a test lamp that is connected to battery voltage. Does the test lamp illuminate? If yes, go to step  12. If no, go to step  11.
  6. Probe the low reference circuit of the CMP sensor harness connector with a test lamp that is connected to battery voltage. Does the test lamp illuminate? If yes, go to next step. If no, go to step  13.
  7. Jumper the 12-volt reference circuit from the CMP sensor to the CMP sensor harness connector. Jumper the low reference circuit from the CMP sensor to the CMP sensor harness connector. Measure the Frequency from the CMP sensor signal circuit of the CMP sensor to a good ground with a Digital Multimeter (DMM) set to the DC voltage scale. Crank the engine. Does the Frequency measure 1-3 Hz? If yes, go to next step. If no, go to step  16.
  8. Disconnect the Powertrain Control Module (PCM). Measure the resistance of the CMP sensor signal circuit from the CMP sensor harness connector to the PCM harness connector with a DMM. Does the resistance measure more 5 ohms? If yes, go to step  18. If no, go to next step.
  9. Connect the PCM connector. Probe the signal circuit of the CMP sensor harness connector with a test lamp connected to battery voltage. Does the test lamp illuminate? If yes, go to step  14. If no, go to next step.
  10. Probe the signal circuit of the CMP sensor harness connector with a test lamp connected to a good ground. Does the test lamp illuminate? If yes, go to step  15. If no, go to step  17.
  11. Test the CMP 12-volt 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  21. If no, go to step  17.
    12. NOTE: Disconnecting the PCM may remove the short from the circuit.
  12. Test the CMP 12-volt reference circuit between the CMP sensor and the PCM for a short to ground. Did you find and correct the condition? If yes, go to step  21. If no, go to step  20.
  13. 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  21. If no, go to step  17.
    14. NOTE: Disconnecting the PCM may remove the short from the circuit.
  14. Test the CMP signal circuit between the CMP sensor and the PCM for a short to ground. Did you find and correct the condition? If yes, go to step  21. If no, go to step  20.
    15. NOTE: Disconnecting the PCM may remove the short from the circuit.
  15. Test the CMP signal circuit between the CMP sensor and the PCM for a short to voltage. Did you find and correct the condition? If yes, go to step  21. If no, go to step  20.
  16. Test for an intermittent and for poor connections at the CMP harness connector. If you find a poor connection, repair the connector as necessary. Did you find and correct the condition? If yes, go to step  21. If no, go to step  19.
  17. Test for an intermittent and for poor connections at the PCM harness connector. If you find a poor connection, repair the connector as necessary. Did you find and correct the condition? If yes, go to step  21. If no, go to step  20.
  18. Repair the CMP signal circuit between the CMP sensor and the PCM for an open or high resistance. After repairs, go to step  21.
  19. Replace CMP sensor. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. After repairs, go to step  21.
  20. Replace the PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. Reprogram PCM. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After repairs, go to next step.
  21. Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running DTC. Does the DTC run and pass? If yes, go to next step. If no, go to step  2.
  22. 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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