Diagnostic Tests: Notes

CAUTION: Ensure ignition is off before disconnecting harness connector from any component or control module.

NOTE: If PCM replacement is instructed in following testing, always ensure PCM connector and ground circuits are okay. If either are suspect, repair and repeat testing to confirm PCM malfunction.

NOTE: Check connectors within a suspect circuit for loose connection, loose female terminals, terminals pushed out of their connectors, water or terminal corrosion.

NOTE: Self-diagnostic test procedures are for use with New Generation Star (NGS) or World Diagnostic System (WDS) scan tools. If a generic scan tool is used, ensure scan tool is certified to OBD-II standard.