P1698 No CCD Messages From TCM

SYMPTOM
P-1698 NO CCD MESSAGES FROM TCM

WHEN MONITORED
With the engine running.

SET CONDITION
No CCD messages are received from the TCM for 10 seconds.

POSSIBLE CAUSES
- DRB does not show bus operational
- CCD wiring harness observable defect
- CCD bus (+) circuit open between PCM and TCM
- CCD bus (-) circuit open between PCM and TCM
- PCM defective (no CCD message)
- TCM defective (no CCD message)