Check Engine Light

All vehicles are equipped with a CHECK ENGINE light located on the dash. As a bulb check, the light will illuminate when the ignition switch is turned to the ON position. On all except California vehicles, light will also illuminate when a central processor or crank angle sensor fault is detected by ECU. On California vehicles, light will illuminate when any of 11 ECCS faults have been detected during normal operation (Mode I) with the engine running.