Troubleshooting No Power to Brakes Using Tekonsha Voyager on International Truck

Question:

I have a international truck with air brakes, brake controller has power coming in on black wire, ground has been checked ,and if i put test light to blue wire the light on controller lights up and can get light to change color when i apply controller manually but no power going to pigtail on truck

asked by: Dave

Expert Reply:

Since your brake controller has power and you checked the ground already we can rule that out. I'm also assuming your truck is wired for a brake controller like your Tekonsha Voyager # 39510 and you don't need an air-activated controller like the # HA100400C.

Assuming that is accurate, if I understand correctly you're testing for power on the blue wire and it checks out, but when you test at your 7-way connection you don't get anything. Based on this information I would say you have a short in the blue wire or you need to check and clean your 7-way socket on the vehicle.

Make sure your 7-way is free from any corrosion or debris, and doesn't have any damage. If that checks out, then I would use the circuit tester and work my way along the blue wire while checking for a short. You may also need to run a new wire with the # 10-1-1.

I have attached a helpful article on troubleshooting brake controllers for your reference.

expert reply by: Robin H