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Home >> Isuzu >> 2000 >> Trooper S, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 3.2L & 3.5L >> Diagnostic Trouble Code Identification >> DTC P0336: Crankshaft Position (CKP) Sensor 58X Reference Signal Circuit >> Diagnostic Procedure
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Diagnostic Procedure

  1. Perform On-Board Diagnostic (OBD) System Check. See BASIC DIAGNOSTIC PROCEDURES article. Read and record FREEZE FRAME and/or FAIL RECORDS data for each DTC set. 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 CRANKS BUT WILL NOT RUN under NO START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES article.
  3. Using scan tool, review and record FAILURE RECORDS information. 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, check for an intermittent problem. See DIAGNOSTIC AIDS .
  4. Disconnect PCM and CKP sensor harness connectors. Check for an open or 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 harness connectors. Measure voltage at 58X reference circuit at PCM harness connector while cranking engine. If reading is about 2.5 volts, go to step  7. If voltage is not about 2.5 volts, go to next step.
  6. Check for faulty connection at CKP sensor. If a faulty connection is found, repair as necessary. If connection is okay, replace CKP sensor. Retest system.
  7. Check for faulty connection at PCM. If a faulty connection is found, repair as necessary. If connection is okay, replace and reprogram PCM. See PROGRAMMING . Retest system.
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