All Doors Fail to Lock and Unlock From Any Switch

Test 1 - 3:

Test 4 - 9:

Test 10 - 14:

SYMPTOM
ALL DOORS FAILING TO LOCK AND UNLOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Junction block - fused B(+) open
- Open fuse #9
- Observe the door lock switch voltage status
- Observe the door lock switch voltage status with switch in the lock position
- Fused B+ CKT open
- Lock or unlock relay output open
- Driver door switch mux circuit short to ground
- Driver door switch mux circuit short to ground
- Passenger door lock switch short to ground
- Ground circuit open
- Passenger door switch mux circuit short to ground
- Body control module - lock relay circuit open
- Body control module- control shorted