Exhaust MIL, Functional Check

Exhaust Malfunction Indicator Light (MIL)

Checking Function
- Switch ignition on.
- The MIL must light up

If the MIL does not light with ignition switched:







If MIL remains lit for more than 3 seconds (i.e. continuously) when ignition is on, proceed with test as follows:
- Start engine and allow it to run at idling speed.
Specification: MIL should go out.

If the MIL does not go out:
- Check DTC memory of Engine Control Module (ECM).

If no DTCs are stored: