Hello I have been working on the coach to fix my abs. Went to hook up my computer to the coach and it wouldn't communicate with the computer. Port failure. When in and downloaded the program on another computer. The computer doesn't have a cd rom . Won't work with that computer either. Seen on this forum that it could be the cable from the jib. We replaced the cable. Didn't fix it either. Thinking it might be the jib. Help john