No CCD Messages From PCM

Tests 1 - 3:

Test 4:

SYMPTOM
NO CCD MESSAGE FROM PCM

WHEN MONITORED:
When the ignition is in the run or start position and battery voltage is above 10 volts.

SET CONDITION:
The BCM looks for engine messages over the CCD bus and does not receive a message within a 2-second period.

POSSIBLE CAUSES
- Engine does not run
- CCD bus (+) circuit open
- CCD bus (-) circuit open
- PCM Doesn't communicate