Test S: The Powertrain Malfunction (Wrench) Warning Indicator Is Never/Always On

PINPOINT TEST S: THE POWERTRAIN MALFUNCTION (WRENCH) WARNING INDICATOR IS NEVER/ALWAYS ON

S1:

S2-S8:

S9:

Normal Operation
The powertrain control module (PCM) and the transmission control module (TCM) monitor the powertrain system and provide the instrument cluster with the operating status over the communication network. When a system concern is detected, the PCM and/or the TCM provides the instrument cluster with a signal commanding the instrument cluster to illuminate the powertrain malfunction (wrench) warning indicator.

Possible Causes
- TCM
- PCM
- instrument cluster