Constant Power to Tekonsha Voyager Brake Controller on 2010 GMC Sierra

Question:

I have a Tekonsha Voyager trailer brake,theres power all the time on blue wire to trailer brakes. Unable to figure out why.

asked by: Earl

Expert Reply:

If your Tekonsha Voyager # 39510 brake controller is always giving power to the brakes, you need to test the controller. To do this, sever the blue wire a couple inches from the back of your controller. Then use a circuit tester such as # PTW2993 to test the end of the blue wire coming out of the controller. It should only have power when you apply the manual override; if it shows power at idle then there is an issue with the controller, and it will need to be replaced.

If the controller tests fine, reconnect the blue wire and move on to the truck side trailer connector. Often, corrosion or dirt may be the cause of a short in a trailer connector. Check the plug to see if there is any type of corrosion built up that may be hampering its functionality.

If the truck side checks out, then it could be the wiring to the brake magnets or possibly the magnets themselves. Inspect the power wires to the magnets and look for wires that may be pinched or otherwise damaged and fix as necessary. You'll also need to make sure the ground wires are attached to bare metal surfaces and free of any paint, dirt or corrosion.

I have also attached some help articles on testing and troubleshooting brake controllers for you to check out.

expert reply by: Kyle S