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Flow of Diagnosis

1. Verify the customer concern by operating the transmission external control.
2. Visually inspect the following for obvious signs of mechanical and electrical damage:
- Damaged shift lock actuator
- Damaged transmission control switch
- Failed fuse(s)
- Damaged wiring harness
- Loose or corroded connections

3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.