All Doors Failing to Lock and Unlock From Any Switch

Tests 1 - 2:

Tests 3 - 8:

Tests 9 - 14:

Tests 15 - 20:

Tests 21 - 25:

SYMPTOM
ALL DOORS FAILING TO LOCK AND UNLOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Open circuit breaker # 2
- Observe the door lock switch voltage status with switch in the lock position
- Fused B(+) open circuit open from PDC
- Fused B(+) to relay coil circuit open from PDC fuse
- Passenger power door lock switch-shorted to voltage
- Relay ground circuit open
- Door lock relay-open/shorted coil
- Door lock relay-shorted terminals
- Fused B+ CKT open
- Door lock and unlock relays ground open
- Passenger door switch MUX CKT shorted to voltage
- Passenger door SW MUX circuit shorted to ground
- Driver power door lock switch-shorted to voltage
- Lock or unlock relay output circuit open
- Passenger door lock switch shorted to ground
- Driver door switch MUX circuit shorted to ground
- Driver door switch MUX CKT shorted to voltage
- Driver door lock switch shorted to ground
- Junction block-lock relay control CKT open
- Body control module - lock relay control open
- Body control module - control short to voltage
- Body control module - control shorted