Test X

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

Test X1-X4:

Normal Operation
The PCM monitors and controls the powertrain functions. When a PCM concern is detected, the PCM provides a signal to the instrument cluster over the SCP communication network, circuits 914 (TN/OG) and 915 (PK/LB), and the instrument cluster illuminates the MIL.

Possible Causes
- PCM
- instrument cluster