I haven't but that is an idea I will explore. I had my truck in for service a few weeks ago and the ITBM was one of the items on my hit list. Of course, they say working as designed because the were no codes set but they didn't have any methods of testing the output of the brake controller. They asked me to bring the trailer in.
Really I ask, you want me to bring a 42 foot fifth wheel trailer here. Like most dealerships these days, they have cars parked everywhere including the drive lanes. Well the service writer said, semis come and go all day long. I looked at him and said, I'm not a truck driver and if I have to backup much we are in trouble. We both laughed. I'm going to take a day and bring the trailer in, I'm also going to let Erica know which day so if her side wants to see they can. Unless something changes with Chrysler's attitude, I will not leave the truck and trailer with them (post 563).
As far as no codes being set. This statement has some value but the technician has to realize the possibilities of the software not designed to catch all fail conditions and report out as a DTC.