Pinpoint Test E : The Trailer Reversing Lamps Are Inoperative Or Always On: Notes

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Wiring Diagram Trailer/Camper Adapter for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Exterior Lighting - Overview .

REFER to: Exterior Lighting - System Operation and Component Description .

Possible Sources

Fuse(s)
Wiring, terminals or connectors
Trailer tow connector
BJB
Trailer concern

Visual Inspection and Diagnostic Pre-checks

Verify the BJB fuse 74 (10A) is OK.
Inspect the trailer tow connector for signs of corrosion or damage. Repair or install a new trailer tow connector as required.