Troubleshooting a Tekonsha Voyager Brake Controller No Green Light and Full Power all the Time

Published 08/18/2014

Question:

On my 7 pin connector, I have battery voltage to #1 pin battery but also have full battery voltage to #3 pin which is the break pin. The vehicle break lights are not on. Ive checked the wiring connectors to the voyager and everything seems correct. No matter how I adjust the controller, I have 14 volts. The green light never comes on.

asked by: Robert R

Expert Reply:

The green light of your Tekonsha Voyager Brake Controller part # 39510 is to show that the brake controller senses a trailer being connected. If you can't get the green light to come on plus your brake output pin on your 7-way is reading full voltage at all times there is either a wiring problem on the trailer connector or the brake controller itself has gone bad.

Check the trailer connector first. See if you can find any corrosion on the inside or outside of the connector and fix/clean as necessary.

Testing the brake controller is fairly easy. Sever the blue brake output wire near the brake controller leaving enough room to reconnect it and then apply the manual slide. Using a circuit tester like the Quickee Tester, part # 3808, you should get output to the controller side of the wire you severed. If the manual slide activates the trailer brake output wire properly, try the brake pedal. If the brake pedal activates the brake output properly also then the problem is farther back either in the vehicle wiring or on the trailer.

If either the brake pedal or the manual slide are not functioning properly you will need to test the wires going into the brake controller. Make sure you have power entering the brake controller on the black wire. On the red wire you will only want power when the brake pedal is pressed.

If there is power on the red wire before the brake pedal is pressed you have connected the red wire from the brake controller to the wrong circuit. You would then need to find the brake switch wire that has power ONLY when the brake pedal is activated.

If these connections check out and the brake controller is properly grounded then there is possibly a problem inside the brake controller.

I am including a link to a video that will show you how to test the wiring on a brake controller.

expert reply by: Jameson C