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

When ignition is on, main relay is energized and supplies Powertrain Control Module (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.