Test E: Warning Indicator Off With Ignition On

Check Charging System Warning Indicator Operation

Turn the ignition off. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn the ignition on. Turn on the charging system warning indicator using Active Commands. Is the charging system warning indicator on? If yes, go to next step. If no, see appropriate ANALOG INSTRUMENT PANEL article in ACCESSORIES & EQUIPMENT for the correct diagnostic direction.

Check For Correct PCM Operation

Disconnect all PCM connectors. Check for corrosion and pushed-out pins. Connect any disconnected connectors. Make sure all other system connectors are fully seated. Operate the system and verify the concern is still present. If the concern still present, install a new PCM. See appropriate REMOVAL & INSTALLATION article in ENGINE PERFORMANCE. Repeat the PCM self-test. Test the system for normal operation. If concern is not still present, the system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. Clear the DTCs. Repeat the self-test.