Trailer Brakes Lock Up When 2016 Jeep Grand Cherokee is In Reverse
Question:
When in reverse using my 2016 Jeep Grand Cherokee pulling a trailer the breaks on trailer lock up.. Dealership has checked the trailer and this doesnt Happen when they hook it up to one of their trucks..
asked by: Nicole
Expert Reply:
My first question is does the trailer have electric brakes or hydraulic surge brakes? If it has surge brakes and an electric reverse lockout, then that would mean that the center pin on your 2016 Jeep Grand Cherokee is not connected to a reverse light circuit.
If it has electric brakes, then the brake output circuit on the trailer is connected to the center pin. To fix this problem you just have to have the right wires going to the right pins on both the vehicle side and trailer side connectors.
Take a look at the picture I have included that shows the functions and locations for vehicle and trailer side 7-Way connectors (ignore wire color). You can use a circuit tester such as # PTW2993 to test the vehicle side connector to determine the functions. On the trailer side you can trace the wires from the connector back to see where they lead.
Products Referenced in This Question
Product Page this Question was Asked From
Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 7 Round - Blade
- Pollak
more information >
Continue Researching
- Shop: Towing Mirrors
- Search Results: trailer tongue scale
- Search Results: tph~004
- Search Results: brake controller
- Search Results: ebrh~accv3~na
- Search Results: sway bar bracket
- Search Results: winch mounts for trailer
- Search Results: trailer jack
- Shop: Mounting Plate for Bulldog Winch BDW15022
- Shop: Bulldog Winch Universal Mounting Plate for Truck and Trailer Winches
- Shop: ComeUp UW-5000si Trailer Winch - Wireless Remote - Synthetic Rope - Hawse Fairlead - 5,000 lbs
- Shop: SmartPlug Marine Power Cord Adapter - 30 Amp Female to 30 Amp Male Twist Lock Connector - 4'
- Shop: Bulldog Winch Trailer Winch - Synthetic Rope - Hawse Fairlead - 7,800 lbs
- Shop: etrailer Tongue Weight Scale for Campers and Utility Trailers - 2,000-lb Capacity
- Shop: Erickson Ratchet Tie-Down Strap w/ Double J-Hooks and D-Ring - 1" x 15' - 1,000 lbs
- Video: Bulldog Winch Electric Winch BDW20291 Review
- Q&A: How to Clean a 7-Way Trailer Wiring Connector
- Article: Trailer Wiring Diagrams
- Q&A: When Truck is Put in Reverse the Trailer Brakes Lock Up
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Electric Trailer Brake Magnet Short Circuit Indicator on Brake Controller Comes On After Moving
- Q&A: Troubleshooting Electric Trailer Brakes that Lock Up in Reverse
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Trailer Wiring
- Video: Choosing the Right Trailer Wiring
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Video: Choosing the Right Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Q&A: Size of Factory Bolts For Installation of Curt Trailer Hitch Receiver in Factory Weldnuts