F 150 2WD Pickup V8-4.6L CNG SOHC VIN 9 (1997)
Trailer Lamps: Initial Inspection and Diagnostic Overview
1. Verify the customer concern by operating the trailer towing package.
2. Visually inspect for obvious signs of mechanical and electrical damage:
VISUAL INSPECTION CHART
Electrical
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Blown fuse(s)
^
Corroded/loose connector(s)
^
Loose/broken wire(s)
^
Failed bulb(s)
3. If concern is not visually evident, determine the symptom and proceed to the Symptom Chart. See: Symptom Related Diagnostic Procedures
