All Doors Fail to Lock and Unlock From One Switch

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 14:

SYMPTOM
ALL DOORS FAIL TO LOCK & UNLOCK FROM ONE SWITCH

POSSIBLE CAUSES
- Driver door switch ground circuit open
- Passenger door switch ground circuit open
- Cylinder lock switch ground circuit open
- Central timer module - passenger door switch MUX open
- Cylinder lock switch MUX circuit open
- Driver door switch MUX circuit open
- Passenger door switch MUX circuit open
- Driver door switch MUX circuit short to voltage
- Passenger door switch MUX circuit short to voltage
- Driver door lock switch
- Cylinder lock switch - Open
- Central timer module - Driver door switch MUX open
- Passenger door lock switch - Open