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Home >> Isuzu >> 1997 >> Rodeo LS, 2.6 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.6L >> Circuit Testing >> DTC P0336 - CKP Sensor Circuit 58X Reference Signal >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform ON-Board Diagnostic (OBD) System Check. See BASIC TESTING article. Go to next step.
  2. Attempt to start engine. If engine starts and runs, go to next step. If engine does not start and run, see ENGINE DOES NOT START in BASIC TESTING article.
  3. Using scan tool, clear DTC P0336. Start engine and allow it to idle for one minute. Read DTCs. If DTC P0336 resets, go to next step. If DTC does not reset, go to DIAGNOSTIC AIDS  .
  4. Disconnect PCM and CMP sensor connector. Check for an open or a short to ground in 58X reference circuit between CKP sensor connector and PCM harness connector. If a problem is found, repair as necessary. Retest system. If no problem is found, go to next step.
  5. Reconnect PCM and CKP sensor. Using a DVOM measure voltage on 58X reference circuit at PCM connector while cranking engine. If DVOM reads around 2.5 volts, go to step 8). If voltage is not as specified, go to next step.
  6. Check for faulty connections at CKP sensor. If a faulty connection is found, repair as necessary. Retest system. If connections are okay, go to next step.
  7. Replace CKP sensor. Retest system.
  8. Check for faulty connections at PCM. If a faulty connection is found, repair as necessary. Retest system. If connections are okay, go to next step.
  9. Replace PCM. Program replacement PCM using required equipment. Retest system.
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