Malfunction Indicator Lamp (MIL) Checking

Malfunction Indicator Lamp (MIL) Checking

Function Test:

- Switch on ignition:
MIL must light up.

If MIL does not light up when ignition is switched on:
- Check wire from ECM to MIL as follows:







If MIL does not light up when ignition is switched on, continue test as follows:
- Start engine and let run at idle:
MIL must go out after a few seconds.

If MIL does not go out:
- Check DTC Memory. With Manufacturer's Scan Tool

If there no DTCs are stored: