MonteCarlo 2000

Malfunction Indicator Light


Dashboard Warning Lamp

The primary function of the dash warning lamp (properly called the Malfunction Indicator Lamp, or MIL) is to advise the operator and that a fault has been detected, and, in most cases, a code stored. Under normal conditions, the dash warning lamp will illuminate when the ignition is turned ON . Once the engine is started and running, the PCM will perform a system check and extinguish the warning lamp if no fault is found.