Originally Posted by linc54
We were hitching up last night for vacation, Hydraulic pressure is holding the brake system and will not release. We have disconnedted the batteries and released the pressure from the bleeder (at master cylinder) and the trailer will move. when you reconnect the battery, it locks up again. Any troubleshooting advice or thoughts?
or 214-549-0622 (alternate cell)
It sounds like the EH Actuator is being given a signal to "brake".
Could be the breakaway switch. Make sure eh breakaway switch is not engaged. The pin should be all the way in.
Another option could be a defective brake controller, or even a defective electro-hydraulic unit.