EATX PRNDL Message Test Failed

NAME OF CODE
EATX PRNDL Message Test Failed

WHEN MONITORED
When engine is running.

SET CONDITION
The engine is running above 450 rpm and the body control module has not received a transmission PRNDL message.

THEORY OF OPERATION
The body control module will monitor the CCD bus and look for the transmission PRNDL message whenever the engine rpm is above 450.

POSSIBLE CAUSES
- Body Control module
- Transmission control module
- CCD bus failure
- Loss of power to transmission control module