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Home >> Chevrolet >> 1998 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0341 - Camshaft Position Sensor Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK , then go to next step.
  2. Using scan tool, read and record FAIL RECORDS data for DTC P0341. Operate vehicle within conditions noted in FAIL RECORDS data. 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, see DIAGNOSTIC AIDS.
  3. Turn ignition off. Disconnect PCM connectors. Connect a test light between battery voltage and PCM harness connector sensor feed circuit. If test light illuminates, leave test light connected and go to next step. If test light does not illuminate, go to step 6).
  4. Disconnect CMP sensor connector. If test light illuminates, go to next step. If test light does not illuminate, go to step 11).
  5. Check for short to ground in CMP and 24X CKP sensors feed circuit. Repair as necessary. After repairs, go to step 14). If circuit is okay, see DIAGNOSTIC AIDS.
  6. Connect a fused jumper wire between PCM harness connector sensor feed circuit and battery voltage. Using a DVOM, check voltage between engine ground and PCM harness connector CMP signal circuit. If voltage is near battery voltage, leave fused jumper wire connected and go to next step. If voltage is not near battery voltage, go to step 8).
  7. Check voltage between engine ground and PCM harness connector sensor ground circuit. If voltage is near battery voltage, go to step 12). If voltage is not near battery voltage, go to step 10).
  8. Check for open CMP sensor feed circuit. If circuit is open, repair as necessary. After repairs, go to step 14). If circuit is okay, go to next step.
  9. Check for open or short in CMP sensor signal circuit. Repair as necessary. After repairs, go to step 14). If circuit is okay, go to step 11).
  10. Check for open CMP sensor ground circuit. Repair as necessary. After repairs, go to step 14). If circuit is okay, go to next step.
  11. Replace CMP sensor. After replacing sensor, go to step 14).
  12. Check for faulty connections at PCM. If a faulty connection is found, repair as necessary. After repairs, go to step 14). If connections are okay, go to next step.
  13. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  14. Read and record FAIL RECORDS data for DTC P0336. Operate vehicle within conditions noted in FAIL RECORDS data. Using scan tool, read SPECIFIC DTC. If scan tool displays DTC P0336 FAILED THIS IGN, repeat step 2). If scan tool does not display DTC P0336 FAILED THIS IGN, repair is complete.
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