Brake Controller Showing NC when Trailer is Hooked Up and Manual Control is Pressed
Question:
On my Dodge 1 ton 2005 4x4 I plug the controller in, hook the trailer up and press the manual control and get a N.C. read out. I tried it with both trailers and got the same results. Tried a neighbors trailer, same thing. Took the truck to the local shop where they tried the truck with a Reese controller and all worked OK. Do I have a faulty Prodigy P2? Or is there something Im missing here?
asked by: Craig
Expert Reply:
There are 4 potential problems that are stated in the instructions (linked below) that could cause the NC (no connection) reading on your Prodigy P2, part # 90885. The 4 possible causes for NC are as follows.
1. Trailer not connected to tow vehicle.
2. Trailer connected with open circuit on brake line.
3. Trailer connector disconnected or corroded.
4. Loss of trailer brake magnet ground.
Testing the Prodigy P2 brake controller is fairly easy. Sever the blue brake output wire and then apply the manual slide. Using a circuit tester like part # PTW2993, you should get output to the trailer brakes. 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. The brake controller is not user serviceable and would then need to be replaced.
I am including a link to a video that will show you how to test to see if your brake controller is working properly. Also, a link to a FAQ page on brake controllers.
Products Referenced in This Question
Product Page this Question was Asked From
Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LED Display
- Up to 360 Degrees
- Tekonsha
more information >
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