Exhaust Malfunction Indicator Lamp (MIL), Checking

Exhaust Malfunction Indicator Lamp (MIL), Checking

Function test of warning lamp
- Switch ignition on.
- Warning lamp for On Board Diagnostic (Malfunction Indicator Lamp -MIL-) must light up
- Start engine.
- Shortly after engine is started, the Malfunction Indicator Lamp (MIL) will go out if there are no malfunctions stored in the DTC memory that relate to the emissions system

NOTE: The switch-on signal for the Malfunction Indicator Lamp (MIL) is transferred from the Engine Control Module (ECM) to the instrument cluster via CAN-bus. Check data exchange between the Engine Control Module (ECM) and other CAN capable control modules. Testing and Inspection