Expedition 4WD V8-4.6L SOHC VIN 6 (1997)
Overdrive Switch: 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:
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Damaged shift lock actuator
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Damaged transmission control switch
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Failed fuse(s)
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Damaged wiring harness
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Loose or corroded connections
3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.
