Liftgate Lock Motor Fails to Lock or Unlock

Test 1 - 3:

Test 4 - 6:

SYMPTOM
LIFTGATE LOCK MOTOR FAILS TO LOCK OR UNLOCK

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