Added a switch so that I can select using OBD pin7 or pin12. As your expectation, it is not working both OBD pin7 or pin12. Same error found.Worth a shot but I suspect the handshake will be different as its not using kline, so won't need or use five baud init.
I plan to get a hold of a srs computer from a Magna at wrecker as see how it communicates with MUT. Magna uses pin12