EPC Warning Light, Function Check

Checking Function Of Warning Light
- Switch ignition on.
Specification: The EPC warning light should light up.

If the EPC warning light does not light up:
- Check wire from Engine Control Module (ECM) to EPC warning light in instrument cluster as follows:







If EPC warning lamp 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: EPC warning lamp should go out.

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

If no DTCs are stored: