How to test a brake controller

[prndl]

My friend has a Prodigy brake controller. How can I test it to make sure it is working without a trailer. Can I connect a VOM to the ground and brake connection on the 7 pin connection and then activate the Prodigy controller and see if there is voltage reading?

I believe that if I connect at the ground and brake line connections and then activate the controller I should get a voltage reading and if I squeeze the controller levers it should increase voltage. Is this correct?

[rohrmann]

It’s going to be very difficult testing a controller, especially if it’s one that has a proportional control that uses a weight in it that varies the trailer braking. You really need to be connected to a trailer, as it isn’t just voltage but current flow that is controlled going to the brakes.

[BB_TX]

Apparently it can be tested without a trailer. Googling brings up these hits.


https://www.google.com/search?client=firefox-b-1-d&sxsrf=ACYBGNQBBAqNpZge0OrFLPkv60x4zB93_w%3A15780 63896416&ei=GFgPXuGFGZSmtQaBoovoDA&q=prodigy+brake +controller+testing+without+a+trailer&oq=prodigy+b rake+controller+testing+without+a+trailer&gs_l=psy-ab.3..33i22i29i30.188925.192230..192432...0.2..0.1 09.1474.16j2......0....1..gws-wiz.......0i71j0i22i30j0i22i10i30j33i299j33i10.CfO MXa_FVXA&ved=0ahUKEwjh8emP2ufmAhUUU80KHQHRAs0Q4dUD CAo&uact=5