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Home >> Chevrolet >> 2000 >> Venture Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0341: Camshaft Position Sensor Circuit >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
  2. Operate vehicle within Fail Record conditions. Using a scan tool, monitor specific DTC INFO for this DTC until DTC test runs. If scan tool indicates that this DTC failed this ignition, go to next step. If scan tool does not indicate that this DTC failed this ignition, see DIAGNOSTIC AIDS .
  3. Start engine. Using scan tool, observe cam signal. If cam signal is present, see DIAGNOSTIC AIDS . If cam signal is not present, go to next step.
  4. Turn ignition off. Disconnect CMP sensor harness connector. Turn ignition on, with engine off. Using a DVOM, check voltage between ground and CMP sensor harness connector ignition feed circuit. If voltage reading is about battery voltage, go to step  6. If voltage reading is not about battery voltage, go to next step.
  5. Turn ignition off. Disconnect PCM harness connector. Check for short to ground or open circuit in CMP sensor feed circuit. Repair as necessary. After repairs, go to step  16. If circuit is okay, go to step  12.
  6. Connect test light to battery voltage. Touch test light to CMP sensor ground circuit. If test light illuminates, go to step  8. If test light does not illuminate, go to next step.
  7. Turn ignition off. Disconnect PCM harness connector. Check for open in CMP sensor ground circuit. Repair as necessary. After repairs, go to step  16. If circuit is okay, go to step  12.
  8. Start engine. Using scan tool, monitor cam signal. Using a fused jumper wire connected to battery voltage, momentarily touch jumper to the signal circuit 5 times for a duration of one second each. If cam signal changes each time the signal circuit is touched, go to step  14. If cam signal does not change each time the signal circuit is touched, go to next step.
  9. Check fuse in jumper wire. If fuse blew, go to step  11. If fuse did not blow, go to next step.
  10. Check for short to voltage or open circuit in CMP sensor signal circuit. Repair as necessary. After repairs, go to step  16. If circuit is okay, go to step  12.
  11. Check for short to ground in CMP sensor signal circuit. Repair as necessary. After repairs, go to step  16. If circuit is okay, go to next step.
  12. Check for poor connections at PCM connector. Repair as necessary. After repairs, go to step  16. If connections are okay, go to next step.
  13. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to step  16.
  14. Check for poor connections at CMP sensor. Repair as necessary. After repairs, go to step  16. If connections are okay, go to next step.
  15. Replace CMP sensor. After replacing sensor, go to next step.
  16. Using scan tool, clear DTCs. Operate vehicle within the Fail Record conditions. Recheck for DTCs. If DTC resets, go to step  2. If DTC does not reset, system is okay.
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