Directscan fried my ECM?

[Razor]

On a serious note..

Thats a T0220 case driver..only thing that could smoke one of those would be hanging on the main ecm connector..not the card edge..

I'd look for a wiring issue..you could proabably use an ohm meter from the blown drivers 3 pins to the main ecm plug and find the offending line..then figure where that line goes and hunt down the wire rubbing/shorting against something..

As far as the three pins on that driver..one will be its input,the other would probably be a source to it(pwr/gnd) the third is the output..and plugging in another ecm..will most likely fry it if the line is bad..

Could also have been light bulb effect whereas you hit the switch and the bulb in the bathroom goes out..sometimes parts just fail..but more likely a wiring issue in the vehicle..

And not the blinker fluid system

 

[ri87T]

Thanks for the advice Razor, looks like I have a fun weekend project!!

 

[kenmosher]

Actaully, looking at the picture it's tough to tell, but I *think* (and I may be completely wrong here) that those are part of the voltage regulation/power supply circuits for the ECM.

That may actually point to something in the DirectScan cable or the tin foil after all, since the power is drawn from the ECM? Maybe a dead short somewhere? Everything "up stream" from there should be fuse protected, but things on the card edge wouldn't be?

Again, not positive of that, but looking at the wiring diagrams, it might be what's going on... maybe TurboBob/Bruce/Dean can confirm or correct?

 

[ri87T]

Turbobob replied in my other thread - http://www.turbobuick.com/forums/showthread.php?s=&threadid=55186
He thought it might be part of the power circuit too. I am starting to think that as I went over a bump, the tin foil rubbed against the ecm and provided a static charge, since my ECM isn't mounted too firmly.