Test W: The O/D Off Indicator Is Never/Always On (Late Build)

PINPOINT TEST W: THE O/D OFF INDICATOR IS NEVER/ALWAYS ON (LATE BUILD)

W1-W2:

W3-W4:

Normal Operation
The transmission control module (TCM) monitors the overdrive (O/D) off switch status. When the O/D function is selected off, the TCM sends a message to the instrument cluster over the communication network to turn on the O/D OFF indicator.

Possible Causes
- TCM
- Instrument cluster