TCM Messages Not Received

Test 1:

SYMPTOM
TCM MESSAGES NOT RECEIVED

WHEN MONITORED
With the ignition on.

SET CONDITION
This DTC will set if the OHC does not receive PCI bus messages from the TCM for 5 seconds. The OHC receives Reverse message from the TCM to provide the Back-Up Lamp Signal to the EC Mirror.

POSSIBLE CAUSES
- Park/neutral switch fault or TCM DTC present
- Overhead console