Additional All Doors Fail to Lock and Unlock From Any Switch

SYMPTOM
* ADDITIONAL ALL DOORS FAIL TO LOCK AND UNLOCK FROM ANY SWITCH

POSSIBLE CAUSES
- Passenger door switch MUX shorted to battery
- Door lock switch resistance high in unlock position
- Driver door switch MUX circuit shorted to battery
- Liftgate switch MUX shorted to battery
- BCM door lock relay control circuit inoperative
- Liftgate switch MUX at BCM defective
- Door lock relay control ground circuit open
- Door lock relay defective
- Fuse # 26 defective
- Fused B(+) circuit open
- Fused B(+) circuit shorted to ground
- Ground circuit open at door lock relay connector