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Home >> Isuzu >> 2000 >> Rodeo LSE, 2.2 D >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.2L >> Diagnostic Trouble Code Identification >> DTC P0337: Crankshaft Position (CKP) Sensor Circuit Low Frequency >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform On-Board Diagnostic II (OBD-II) system check. See SELF-DIAGNOSTICS - INTRODUCTION article. Go to next step.
  2. Turn ignition off and disconnect CKP sensor. Turn ignition on. Connect DVOM between 5-volt reference and sensor ground terminals at CKP sensor harness connector. If DVOM reads 5 volts, go to step  5. If reading is not as specified, go to next step.
  3. With ignition on, use DVOM to backprobe PCM connector 5-volt reference and ground terminals. If DVOM reads 5 volts, go to next step. If reading is not as specified, go to step  9.
  4. Using DVOM, check resistance of 5-volt reference and ground circuits between PCM and CKP harness connectors. If an open or short is discovered, repair circuit. Retest system.
  5. Turn ignition off. Disconnect PCM and CKP sensor. Check for an open circuit 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.
  6. Reconnect PCM and CKP sensor. Using DVOM, measure voltage on 58X reference circuit at PCM connector and crank engine. If reading on DVOM is about 2.5 volts, go to step  9. If voltage is not as specified, go to next step.
  7. Inspect connections at CKP sensor. Repair connections as necessary. Retest system. If connections did not require repair, go to next step.
  8. Replace CKP sensor. See TOOTH ERROR CORRECTION LEARN PROCEDURE  under PROGRAMMING. Retest system.
  9. Inspect connections at PCM. Repair connections as necessary. Retest system. If connections did not require repair, go to next step.
  10. Replace and reprogram PCM using required equipment. See PROGRAMMING . Retest system.
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