EATX PRNDL Messages Not Received

Tests 1 - 2:

SYMPTOM
EATX PRNDL MESSAGE NOT RECEIVED

WHEN MONITORED
With the ignition in run and IOD fuse installed.

SET CONDITION
The BCM does not receive any messages from the Transmission Control Module for at least 18 seconds.

POSSIBLE CAUSES
- Attempt to communicate with the transmission control module
- Body control module