The program will be called PCD. If you have one of those laptops with a bit of everything on it you probably have it. The problem is those programs are made by TK’s ITS and need a very specific adapter. I know you can buy a tool from World. It seems to me that it would almost have to be seeing DSD low to think it’s at 1. Make sure you have a ground on DSDC on C-10 and all the way to the H4 IO card on 43-1. These things like the 5v supply to be up over 5.2vdc and you’re right about the Molex plug connections, they can be a huge intermittent problem. I replace them all with gold plated Trifurcon type that grab both sides of the pin.