F 150 Super Crew 2WD V8-4.6L SOHC VIN 6 (2003)
Trailer Lamps: Initial Inspection and Diagnostic Overview
INSPECTION AND VERIFICATION
1. Verify the customer concern by operating the trailer towing package.
2. Visually inspect for the following obvious signs of electrical damage.
VISUAL INSPECTION CHART
Electrical
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Battery junction box (BJB) Fuse:
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5 (20A)
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20 (10A)
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19 (10A)
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101 (30A)
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108 (30A)
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Central junction box (CJB) Fuse 23 (10A)
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CJB Fuse 13 (20A)
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Corroded/loose connector(s)
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Loose/broken wire(s)
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Bulb(s)
3. If the concern is not visually evident, determine the symptom and proceed to the Symptom Chart. See: Symptom Related Diagnostic Procedures