Before Pinpoint Tests
Note. Prior to entering pinpoint tests, check the powertrain control module (PCM) wiring harness for correct connections, bent or broken pins, corrosion, loose wires, correct routing, correct seals and their condition. Check the PCM, sensors and actuators for damage. Refer to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article.
Note. If a concern still exists after electrical diagnosis, refer to DIAGNOSIS BY SYMPTOM .
If DTCs appear while carrying out the on-board diagnostics, refer to DIAGNOSTIC TROUBLE CODE CHARTS for the appropriate repair procedure. Prior to entering pinpoint tests, refer to any TSBs for transmission concerns.