Initial Inspection and Diagnostic Overview
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
^ Battery Junction Box (BJB) Fuse 5 (20A)
^ BJB Fuse 19 (10A)
^ BJB Fuse 20 (10A)
^ BJB Fuse 101 (30A)
^ BJB Fuse 108 (30A)
^ Central Junction Box (CJB) Fuse 23 (10A)
^ CJB Fuse 13 (10A)
^ Corroded/loose connector(s)
^ Loose/broken wire(s)
^ Failed bulb(s)
3. If the concern is not visually evident, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures