The OBD-II CEL should illuminate briefly everytime when you first turn the ignition key, and hear the four beeps from the cluster. This is most likely driven by the ECM as a self test. CEL should also illuminate when you activate the instrument cluster self test routine.
It's part of the instrument cluster. It's already repaired by stealing my ABS lamp(which I don't have). Now where to you find replacement lamps, is the body part of it?