Diagnostic Trouble Code Tests: Notes

CAUTION: Ensure ignition is off before disconnecting harness connector from any component or control module. If PCM replacement is instructed in following testing, always ensure PCM connectors and ground circuits are okay. If either are suspect, repair and repeat testing to confirm PCM malfunction.

NOTE: For wiring diagram, see WIRING DIAGRAMS article. Always perform applicable drive cycle test after repair is performed to verify if DTC is reset.

NOTE: For following tests, manufacturer recommends use of New Generation Star (NGS) tester. NGS tester is referred to as scan tool. For more information, see appropriate SELF-DIAGNOSTICS - INTRODUCTION article.