Been a while since I worked on one,so excuse me if I don'call the board by it's proper name, but had the same issue once.It turned out to be a bad trace on the board behind the relay pilot board. If they are doing it on the relay pilot board. If they are doing it on the card rack, it will be a process of elimination. With the car out of group. You will have to unplug one card at at time till it goes away, and you'll have found it.
Last edited by JustWolf; 04/25/14 06:13 PM.
