Malfunction Indicator Lamp (MIL)

MALFUNCTION INDICATOR LAMP (MIL)
The Malfunction Indicator Lamp (MIL) is located at the instrument panel. The MIL (Service Engine Soon) has the following functions:

^ Bulb check. The MIL is turned ON when the ignition switch is in the Run or ON position.
^ System check. When the engine is started, the MIL is turned OFF if no DTCs are set.
^ The MIL informs the driver that a malfunction that affects the emission control system of the vehicle has occurred. The driver is to take the vehicle in for service as soon as possible.
^ In order to alert the driver that a catalytic converter damaging engine misfire condition is currently present, the MIL is turned ON and OFF once per second.

IMPORTANT: The MIL is turned ON for the above conditions only. If the engine stops running with the ignition switch in the Run or the ON position the MIL is not turned ON.


Perform the Powertrain On-Board Diagnostic (OBD) System Check if the following conditions exist:

^ The engine is running, and the MIL is ON.
^ A malfunction is suspected due to a driveability symptom. Testing and Inspection


INTERMITTENT MIL (SERVICE ENGINE SOON)
If a malfunction is intermittent the MIL (Service Engine Soon) may turn ON and then turn OFF after 3 ignition cycles. However, the VCM will store the corresponding DTC and certain engine operating data present at the time the malfunction is detected.