All Doors Failing to Lock From Any Switch

Tests 1 - 4:

Tests 5 - 9:

SYMPTOM
ALL DOORS FAILING TO LOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Fused B(+) circuit in junction block
- Lock relay output circuit short to ground
- Door lock relay-open/shorted coil
- Door lock relay-shorted terminals
- Door unlock relay ground open
- Door unlock relay ground circuit open
- Junction block-lock relay control CKT open
- Body control module - lock relay control open