A-2: Malfunction Indicator Light (Mil) Remains On

When ignition is on, PCM energizes main relay. As PCM is supplied with ignition power, MIL turns on. After engine starts, MIL will turn off if no malfunction is detected. If a malfunction is detected, MIL will remain on until system is repaired.

1. Connect scan tool to Data Link Connector (DLC). Attempt to retrieve DTCs with ignition on, engine off. If any DTCs are displayed, see DIAGNOSTIC TESTS  . If no DTCs are displayed, go to next step.
2. Turn ignition off. Remove PCM cover, located below right side of instrument panel. Disconnect PCM connectors. Turn ignition on. If MIL comes on, repair short to ground in Violet/Yellow wire between MIL bulb and PCM connector. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. If MIL does not come on, replace PCM. See REMOVAL, OVERHAUL & INSTALLATION article. Retest system.