Test A-1: Malfunction Indicator Light (Mil) Inoperative

When ignition is on, main relay is energized and supplies PCM with battery voltage. 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. Turn ignition on. Observe instrument cluster warning lights. If all warning lights illuminate except MIL, go to next step. If no warning lights illuminate, check for blown fuses, faulty ignition switch, or poor connection at instrument cluster. Repair as necessary.
2. Attempt to start engine. If engine does not start, go to TEST A-3  . If engine starts, turn ignition off and disconnect PCM harness connectors. Connect a fused jumper wire between ground and terminal No. 17 (Violet/Yellow wire) on PCM 26-pin harness connector. Turn ignition on. If MIL illuminates, replace PCM. If MIL does not illuminate, repair open in Violet/Yellow wire or replace faulty MIL bulb. Retest system.