I have checked wires from the car top, verified voltage on the S24-2 card and traced every plug back to the CWIK board in the car operating panel. I have found nothing. However if I unplug CONA or CONB from the S24-2 board this fault will appear. It’s almost like I am intermittently loosing voltage to the board.
Not sure where to look next.
As a little public service announcement, it does more harm than good to re-teach CAN for an intermittent problem. If it ever works the boards know their configuration. Too often guys run these commands for no good reason and end up with more wrong than when they started. This is a perfect example. If he does the TECCR then TECC as suggested, and there is an HN riser, now you have no hall calls either. And if you’re really unlucky, there could be a brake in the teach line so you won’t have all your hall calls back until you go through the gutter and find the problem.