Diesel Data: Automotive Repair

Check the MIL

Check the MIL

1. The MIL comes on when the ignition switch is turned ON and the engine is not running.

HINT: If the MIL is not illuminated, troubleshoot the MIL circuit.

2. When the engine is started, the MIL should not illuminate. If the lamp remains on, the diagnosis system has detected a malfunction or abnormality in the system.