Trailer brake locks up when empty

May have a bad abs sensor or too much gap. Check the wire going to it. May look good and still be bad. If abs light on left rear side of trailer is operable ( or abs trailer light on dash if newer trailer without an abs light on the side) turning key on and off twice then on will flash codes for diagnosis

 

My trailer brakes lock up when I make a right turn

 

Plan your routes for all left turns.

 

I would check the length of the pushrods on that axle. Look at the angle of the pushrod relative to the slack adjuster angle. 90° is good. Check the angle of the axle that isn't locking up to compare. Was the trailer recently serviced?

If it isn't that then it may be an ABS issue.

I'm no mechanic, just some observations I have seen.

 

My last trailer 01 Great Dane would lock up while empty. Same with a friends reefer seems it’s a common problem very dangerous in rain/ snow.Shop Had no answers already had new ecu . For some reason if I stabbed the brakes hard it would reset something and fix the issue.That trailers where it belongs Parked

 

The real question. Are you in the inside or outside right turn lane when it happens?

 

Better be in the right lane !! Lol When making a left which of the 2 left lanes should he be in?

 

I'm in the outside lane and the trailer tandems are in the inside lane