Exhaust Malfunction Indicator Lamp, Checking

Exhaust Malfunction Indicator Lamp, 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 (MIL) will go out if there are no malfunctions stored in the DTC memory that relate to the emissions system

• The switch-on signal for the (MIL) is transferred from the Engine Control Module (ECM) to the instrument cluster via CAN-bus. Check data exchange between the (ECM) and other CAN capable control modules. Refer to => [ ECM Data Exchange with CAN-Bus Modules, Checking ] ECM Data Exchange With CAN-Bus Modules, Checking