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All Doors Failing to Unlock From Any Switch

Tests 1 - 4:




Tests 5 - 9:




SYMPTOM
ALL DOORS FAILING TO UNLOCK FROM ANY SWITCH

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