FCM, PCM Communication Fault

Tests 1 - 3:

SYMPTOM
FCM, PCM COMMUNICATION FAULT

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

SET CONDITION
The FCM does not receive any messages from the PCM for at least 5 seconds.

POSSIBLE CAUSES
- PCM communication fault
- Attempt to communicate with the PCM
- PCI bus circuit open
- Powertrain control module