PCM Messages Not Received

Test 1 - Test 3:

Test 4 - Test 5:

SYMPTOM
PCM MESSAGES NOT RECEIVED

WHEN MONITORED
With the ignition on.

SET CONDITION
The BCM does not receive any messages from the Powertrain Control Module (PCM) for at least 12 seconds.

POSSIBLE CAUSES
- Verifying active DTC
- PCM messages not received
- Attempt to communicate with the PCM
- Powertrain control module
- PCI BUS circuit open
- Body control module