Troubleshooting Malfunctioning Left Turn Signal/Brake Light on 2011 Honda Pilot

Question:

I installed the Curt wiring harness and after everything was installed not getting the left turn/Brake signal to work. all other function work fine. Please help

asked by: Joe O

Expert Reply:

First you will want to disconnect the trailer and use a circuit tester like # PTW2993 to test the pins on the connector. Have someone sit in the vehicle and run through each lighting function to make sure they are all working.

The brake lights and turn signals are the pins in the 9:00 and 3:00 positions respectively. If the tester does not light up on one or both pins when the brakes are applied, then that indicates an issue on the vehicle side of things. Check for any loose wires, connection, missing or blown fuses/relays first.

If the signals all work on the vehicle side, then the issue is on the trailers, probably a bad ground or dirty trailer connector. Make sure that the trailer connectors are clean a free of corrosion on the pins and around back where the wires attach. The main trailer connector ground and the grounds for the lights should all be attached to clean and corrosion free bare metal surfaces.

I have included a couple of FAQ articles that should also help with troubleshooting.

expert reply by: Chris O