All Doors Failing to Lock From Any Switch

Test 1 - 3:

Test 4 - 9:

Test 10:

SYMPTOM
ALL DOORS FAILING TO LOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Lock relay driver circuit shorted to ground
- Body control module
- Door unlock relay resistance check
- Junction block-open ground circuit to door unlock relay
- Door lock relay-open/shorted coil
- Door lock relay-shorted terminals
- Junction block open fused B+ CKT to switch side of relay
- Junction block-lock relay control CKT open
- Junction block-open fused B+ CKT to coil side of relay