Malfunction Indicator Light Inspection
NOTE:
The Malfunction Indicator Light (MIL) on the instrument cluster may also be referred to as CHECK ENGINE light. The MIL inspection should be performed to ensure MIL is operational and will come on if a trouble code is stored.
- Turn ignition on with engine off. The MIL should come on and remain on. If MIL does not come on, check bulb circuit on instrument cluster and wiring circuit between MIL and ECM. See appropriate wiring diagram in at the end of this article. See ECM LOCATION under SCAN TESTER PROBLEMS.
- Start engine and note that the MIL goes off. If MIL remains on with engine running a malfunction is detected. Proceed to RETRIEVING TROUBLE CODES .