When I first got my 2720, I had the same symptoms. It turned out in my case that the wires had been cut to the roadside wheel, and the magnet in the brake mechanism was badly worn and working intermittently. Bottom line is that it was a wiring issue. You should have a wiring diagram for the brakes to verify the wiring issue.
Because you are getting error messages at the brake controller, you have a wiring and/ or brake mechanism problem. I don't think there is any point in looking at the breakaway switch at this point.
|