No Response From PCM

SYMPTOM
* NO RESPONSE FROM PCM

TEST NOTE: All symptoms listed above are diagnosed using the same tests. The title for the tests will be PCM MESSAGE NOT RECEIVED.

POSSIBLE CAUSES
- No resp BCM DEF bus + CKT open
- No resp BCM DEF bus - CKT open
- No response PCM bus (+) CKT open
- No response PCM bus (-) CKT open
- No response PCM default