One Passenger Door Fails to Lock and Unlock

Tests 1 - 3:

Tests 4 - 6:

SYMPTOM
ONE PASSENGER DOOR FAILS TO LOCK & UNLOCK

POSSIBLE CAUSES
- Door lock motor - open
- Door unlock relay output wire open
- Door lock relay output wire open
- Door unlock relay output wire shorted to ground
- Door unlock relay output shorted to door lock relay output
- Door lock relay output wire shorted to ground