Malfunction Indicator Light (Mil)
NOTE:
Not all trouble codes activate MIL.
All models are equipped with a Malfunction Indicator Light (MIL). As a bulb check, light glows when ignition is turned on and engine is not running.
On California models, MIL glows when a fault is detected with engine running. A corresponding trouble code will set in ECM memory. MIL also glows if ECM or camshaft/crankshaft position sensor malfunctions.
On Federal models, MIL glows only when ECM or camshaft/crankshaft position sensor malfunctions with engine running.