F 150 4WD Pickup V8-281 4.6L VIN W EFI (1997)
Multifunction Electronic Control Module: Flow of Diagnosis
1. Verify the customer concern by operating the system in question.
2. Visually inspect for obvious signs of mechanical and electrical damage.
Visual inspection Chart
Mechanical
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Damaged switch(es)
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Stuck switch(es)
Electrical
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Blown fuse(s)
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Damaged wiring harness(es)
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Loose or damaged wires or connectors
3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart. See: Symptom Related Diagnostic Procedures