EATX PRNDL Messages Test Failed

Test 1 - 2:

Test 3 - 4:

SYMPTOM
EATX PRNDL MESSAGE TEST FAILED

TEST NOTE
This symptom is diagnosed using the test 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.

POSSIBLE CAUSES
- No response TCM BUS (+) CKT open
- No response TCM BUS(-) CKT open
- No response BCM/TCM BUS (-) open
- No response BCM/TCM BUS(+) open
- No response TCM default