A problem you get quite often with newer trailers is the can hi and low data lines wont talk to the trailer.
Easiest way is to cut them out.Undo the end of the ABS suzi.Inside are 7 wires.
Red =ABS power
Brown = ABS ground
Yellow =ABS signal
Black =ABS sensing
White = ABS solenoids
Then you got a green/white tracer and a brown/white tracer.These are the data lines.
They are only thin and made of aluminium to cut down on electrical"noise" interference.
Just cut them off from the pins.
If the truck cannot sense a trailer EBS ecu it will just think its the old type trailer and just go into standard ABS mode.