Troubleshooting Flashing Blue Screen on Tekonsha Prodigy P3 Brake Controller

Question

Question:

Dear Sirs, Just so you know I sent a request to customer service and found this QandA after. Just installed order #for a Tekonsha Prodigy P3 Trailer Brake Controller this weekend. My vehicle is a 2011 GMC Sierra. We followed the on-line video for my vehicle year and model and everything seemed to go well. We connected vehicle power and the unit lit up and seemed to be working fine until we connected our trailer. We made the connection to the trailer, set the unit up as instructed in the manual and was on our way to test and set the brakes. However, as soon as the brake pedal was pressed the unit started to flash a blue screen. Because it is a continuous flashing blue screen we took a video and I would like to attach it but dont think we can. One thing we noticed was when the brake was not pressed the screen flashed slower than when the brake is pressed down. Not sure if this makes a difference. We looked through the manual and dont see a problem like this mentioned. Any ideas? If you want me to send over the video just let me know. Thank You,

asked by: Charles P

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Expert Reply:

Thank you for all of the info that you provided.

From what you described I believe you have a wiring issue going on. If everything tested out just fine for the P3 # 90195 after you installed it on your 2011 GMC Sierra then it leads me to believe that the problem lies on your trailer wiring as opposed to the installation of the brake controller. If you jump to page 10 of the instructions for the P3 (which are linked to this page for you to check out) you can see that there are multiple times where the screen can flash and it all has to do with warnings.

If you are able to read the screen it should give you some extra info on what the problem is and then you can refer to the instructions to see what is going on and what the possible solution would be. I would imagine that you're going to need to start off with the ground connections on your trailer. This goes for your main ground as well as the grounds for your trailer brakes.

Let me know if your screen is flashing a different warning than what is in the instructions, and if you have verified that all of the wiring on your trailer is properly connected and I can help you troubleshoot further.

expert reply by: Jon G

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Answer 1

If you sever the blue wire leaving the P3 controller part #90195 leaving enough room to reconnect it and test the end of the wire leaving the controller with a circuit tester like part #PTW2993 you should see voltage when you slide the manual…

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Answer 2

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Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

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Answer 6

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Answer 7

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 8

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Answer 9

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 10

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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Answer 11

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 12

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Troubleshooting Flashing Blue Screen on Tekonsha Prodigy P3 Brake Controller

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