Before Pinpoint Tests

NOTE: Prior to entering pinpoint tests, check the Powertrain Control Module (PCM) wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, proper seals and their condition. Check the PCM, sensors and actuators for damage.

NOTE: If a concern still exists after electrical diagnosis has been performed, refer to Diagnosis by Symptom. Symptom Related Diagnostic Procedures

If Diagnostic Trouble Codes (DTCs) appear while performing the on-board diagnostics, refer to the Diagnostic Trouble Code Chart for the appropriate procedure. Prior to entering pinpoint tests, refer to any Technical Service Bulletins (TSBs) for transmission concerns. Diagnostic Trouble Code Tests and Associated Procedures