Mariner 4WD V6-3.0L (2010)
Trailer Lamps: Initial Inspection and Diagnostic Overview
Special Tools Used With Diagnostics
Trailer Lamps
Principles of Operation
Trailer Lamps
Principles of Operation
The trailer lamps are supplied power by the trailer tow park lamp relay, the LH trailer tow stop/turn relay and the RH trailer tow stop/turn relay. They are
energized to correspond with the exterior lighting functions of the vehicle. A common ground is provided to the trailer tow connector for the trailer
lamps.
Inspection and Verification
Trailer Lamps
Inspection and Verification
1. Verify the customer concern.
2. Verify the exterior lighting system of the vehicle is operating correctly. If not, refer to the appropriate pinpoint test.
3. Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart
4. If the concern is not visually evident, verify the symptom. GO to Symptom Chart. See: Symptom Related Diagnostic Procedures