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Malfunction Indicator Light Inspection

NOTE: Malfunction Indicator Light (MIL) may also be referred to as CHECK ENGINE light. Inspect MIL to ensure it is operational and will come on if a Diagnostic Trouble Code (DTC) is set.
  1. Turn ignition on with engine off. MIL should come on and remain on. MIL is displayed as an engine icon located just below speedometer on instrument cluster on instrument panel. If MIL comes on, go to next step. If MIL does not come on, check bulb circuit on instrument cluster and wiring circuit between MIL and ECM. See WIRING DIAGRAMS article. See ENGINE CONTROL MODULE LOCATION .
  2. Start engine and ensure MIL goes off. If MIL goes off, no malfunction is detected at this time. If MIL remains on or blinks with engine running, a malfunction is detected. Proceed to TESTING PROCEDURE .
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