Check Engine/Malfunction Indicator Light
Among the on-board diagnostic items, a check engine/malfunction indicator light comes on to notify the driver of a emission control component irregularity. If the irregularity detected returns to normal or the PCM judges that the component has returned to normal, the check engine/malfunction indicator light will be turned off. Moreover, if the ignition is turned OFF and then the engine is restarted, the check engine/malfunction indicator light will not be turned on until a malfunction is detected.
The check engine/malfunction indicator light will come on immediately after the ignition switch is turned ON . The light should stay lit for 5 seconds and then will go off. This indicates that the check engine/malfunction indicator lamp is operating normally. This does not signify a problem with the system.
To test the light, perform the following:
- Turn the ignition switch ON . Inspect the check engine/malfunction indicator lamp for illumination.
- The light should be lit for 5 seconds and then should go out.
- If the lamp does not illuminate, check for open circuit in the harness, blown fuse or blown bulb.