You Da Man Cliff!
Terminal "A" is ground and terminal "G" is the line to the CCM. As you view the ALDL, A is top right and G is lower row left. Short those two and the speedo will dissolve into a data stream for the CCM, trouble is that I don't remember the rest as there are 4 modules of display......that stuff is in the Kit from Gordon so I never bothered to memorize it as it's always in my car.
Oh, the CSGS can be unplugged at the trans and left tapped up to keep dirt & such out of the connectors. The Prom don't care that it is unplugged, no DTC is set.
Okay, now this is an admission of stupidity on my part. I'm lost when you guys talk about MOATS stuff. Flightless birds & emulators & all that good chit I should learn.... but anyway I'll lay this on you because I have a piggy back thing plugged into my OE AYBK PROM and I lost the foam block on the door of the ECM. This is causing the PROM to loosen as I drive, and unless it gets real loose it doesn't even light the SES light, even flicker it. My issue is that the PROM cover had to be removed to plug in the piggy back thing, and now the hold down levers don't have anything to grab, they used to grab the stock prom cover ( that blue thing that the foam block used to rest on when the door is locked ) so it vibrates loose and is playing heck with the ECM.....I think it goes into retarded mode. Anyway, a loose prom is supposed to set a DTC 51 or a DTC41: 51= wrong or loose memcal; 41 = cylinder select error, which could also be a loose memcal.
Okay that's the sum of my knowledge on engine management programs and their workings!
Tom