Will a GM ecm (or PCM) run on a test bench with just power and ground hooked up? At least enough to log data? Obviously it will have pretty much all the error codes going but that's ok for me now. I'm trying to delve into the world of flash memory with an 8051 PCM and Tuner Cat with an EE definition (LT-1). Looks like the way to figure it all out is to try to read the program on the bench and then put it back in.

 

I have done just that with various ECMs: '7148, '7747, '8746, and the '730 w/$8D code. Power, ground and an ALDL link. Never did an '8051 however, I don't know of any reason it shouldn't work.

RBob.

 

It's not really a bench at that stage, just a re-flashing station, but yes, that'll work. That's what I did when working on them, rather then working on it in car, I did them in the house. The flash pcms will not survive a battery voltage crash during programming. And they take alot of work to restart. AKM Electronics had alot of info on them. You'll need to goggle for their site.

 

Thanks guys,

Thats what I thought. Yeah, I know it's not a real bench setup since I cant dummy in inputs. But hey, it's on my bench! A bench-top reflashing station.

Steve