Forum Discussion

Budman1962's avatar
Budman1962
Explorer
Jul 10, 2016

Brake problems on my Aljo

I have an 06 aljo TT with a brake problem. I can hook it up and adjust the controller and all is fine. Then the next time I hook it up and the brakes will lock up. I have to readjust it all over again. Then the next time I hook it up it is way off again. I got a different pickup and the problem is the same. Then I got a tekansha p2 controller still the same. I installed a new hookup cord on the trailer and inspected all the wiring and magnets on the trailer and all looks good. The only thing I don't know about is the break away switch. Could a problem with the switch cause this constant big change in power settings each time I hook up?
  • westend's avatar
    westend
    Explorer
    Jul 10, 2016
    You will need to measure voltage at the brake assemblies. MY WAG is that your emergency break-away switch is always "on" and sending limited voltage to the brakes. When you use the controller, the added voltage locks up the brakes.
  • Budman1962's avatar
    Budman1962
    Explorer
    Jul 10, 2016
    Thanks for the reply. If the controller is not activated the voltage at the magnets should be zero correct? If the controller says 6 volts should all the magnets be getting 6 volts? I did see a replacement break away switch at tractor supply but it has three wires and mine only has 2. you could be on to something. When I checked the wires and magnets I cleaned the brake dust and packed the wheel bearings. Only one trip and there was a lot of new dust.
  • Boon_Docker's avatar
    Boon_Docker
    Explorer III
    Jul 10, 2016
    If the break away switch was always on it would completely drain the battery so there would be no extra voltage going to the brakes.

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