ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 12390 > < Diagram Information and Instructions|Page 12387
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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 obvious signs of electrical damage.

Visual Inspection Chart

Electrical
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Central junction box (CJB) fuse:
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38 (20A)

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101 (30A)

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115 (20A)

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Circuitry

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Lamps

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Trailer tow turn/stop relays

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Trailer tow electric brake controller

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CJB

3. If the concern is not visually evident, verify the symptom and proceed to the Symptom Chart.  See: Symptom Related Diagnostic Procedures

Initial Inspection and Diagnostic Overview|Page 12390 > < Diagram Information and Instructions|Page 12387