Test P: The Overdrive (O/D) Off Indicator Is Never/Always On

PINPOINT TEST P: THE OVERDRIVE (O/D) OFF INDICATOR IS NEVER/ALWAYS ON

P1-P4:

P5-P6:

Normal Operation
The overdrive (O/D) off function is controlled by the O/D off switch located on the shifter assembly. When the transmission is placed in the O/D OFF position, the O/D off switch provides voltage to the powertrain control module (PCM). The PCM provides the overdrive off status to the instrument cluster over the high speed controller area network (CAN) communication bus. When the overdrive is turned off, the PCM sends a signal to the instrument cluster to turn on the O/D off indicator. If an O/D fault condition is detected, the PCM sends a signal to the instrument cluster to flash the O/D off indicator. If the O/D status message is missing for more than 5 seconds, the instrument cluster illuminates the O/D off indicator.

DTC U0294 - sets if the PCM data is missing for more than 5 seconds or if invalid data is received and the instrument cluster turns on the O/D off indicator.

Possible Causes
- PCM
- Instrument cluster