Troubleshooting Flashing 00 On a Pilot Brake Controller When Brake is Applied  

Question:

Expert Reply:

According to Pilot the problem you described is due to a power connection on the brake output circuit. 9 times out of 10 this problem is related to corrosion built up in the trailer connector. Check the connectors and even if they look clean try scuffing them up with fine grit sandpaper to see if that solves the problem.

Aside from that you can check to make sure the blue wire of the controller is making a solid connection to the vehicle's wiring.

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

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