Flow of Diagnosis

1. Verify the customer concern by operating the handles, locks, latches and mechanisms.
2. Check for mechanical binding by manually operating the door locks. Operate the lock system several times from each switch while observing the operation of all door locks.

NOTE: Be sure the battery is fully charged before starting any electrical diagnosis.

3. Verify the components of systems related to the fuse for proper operation. If the components or systems are not working properly, the fuse(s), fuse feed circuit(s) or fuse load side circuit(s) may be at fault.
4. Visually inspect for obvious signs of mechanical and electrical damage.

VISUAL INSPECTION CHART

Mechanical
- Binding latch mechanisms
- Binding linkage
- Misaligned door

Electrical
- Battery
- Circuitry open/shorted
- Damaged door lock switch
- Damaged power door lock actuator

5. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures