PCM Messages Not Received

Tests 1 - 3:

SYMPTOM
PCM MESSAGE NOT RECEIVED

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

SET CONDITION
The BCM does not receive any messages from the PCM for at least 30 seconds.

POSSIBLE CAUSES
- PCM message not received
- Attempt to communicate with the PCM
- PCI bus circuit open
- Powertrain control module