Constant Power on Blue Brake Controller Wire Using Tekonsha Voyager Brake Controller
Question:
fitted unit and have power to the trailer plug [blue wire] all the time. also no led light working
asked by: Mike B
Expert Reply:
It sounds like there is a short to the blue brake output wire somewhere between the controller and the trailer connector on your vehicle. There are some things you can do to test to determine where the problem is.
Brake controllers do send back a minimum amount of voltage to check for a connected trailer, but it should not be enough to activate the brakes.
The magnets humming makes me think there is a bit of a short. To determine where it is coming from the first step is to disconnect the trailer.
In the truck cab you will need to sever the blue wire several inches from the back of the controller. Then use a circuit tester such as # PTW2992 to test the end of the blue wire coming out of the controller. It should only have power when you apply the manual override or brake pedal. If it shows power at idle, then there is something wrong with the controller and it will need to be replaced.
If it tests fine, then reconnect the blue wire. Then move on to the truck side trailer connector. Many times, dirt or corrosion can cause a short in a trailer connector. Make sure the truck and the trailer side connectors are clean and free of corrosion inside and out.
You can test the brake output pin and it should only show power with the manual override. If it shows power any other time, then there is a short somewhere between the connector and the brake controller you will need to track down.
I have also included some help articles on testing and troubleshooting brake controllers for you.
Products Referenced in This Question
Product Page this Question was Asked From
Tekonsha Voyager Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Manual Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- Indicator Lights
- Up to 90 Degrees
- Tekonsha
more information >
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