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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