Test P: The Malfunction Indicator Lamp (MIL) Is Never/Always On

PINPOINT TEST P: THE MALFUNCTION INDICATOR LAMP (MIL) IS NEVER/ALWAYS ON

P1-P4:

Normal Operation
The MIL is controlled by the instrument cluster using data sent from the powertrain control module (PCM) over the communication network.

Possible Causes
- PCM
- instrument cluster