F 150 4WD Pickup V8-281 4.6L VIN W EFI (1997)
Multifunction Electronic Control Module: Initial Inspection and Diagnostic Overview
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