No Response From BCM (Bus (+/-) Signal Open)

Test 1 - 3:

Test 4 - 6:

SYMPTOM
NO RESPONSE FROM BODY CONTROL MODULE (BUS +/- SIGNAL OPEN)

POSSIBLE CAUSES
- Check the ground circuit at the junction block connector C2
- Check the ground circuit at the junction block connector C3
- Check the fused B+ CKT (in junction block)
- Check the ground circuit at the junction block body control module CONN CAV 1
- Check the ground circuit at the junction block body control module CONN CAV 20
- Body control module