ORIGINAL: George
Hey Craig,
The ONE time I have seen it, the ECU ''fried'' and it wasn't commanding anything at that point other than supplying voltage to the fuel pump; the only thing that stopped it was unplugging the battery from the ECU. Nothing more than soaking everything with fuel happened, but it could have been much worse! Like I said, it is VERY RARE and obviously not many have seen it happen, hence the replies and votes.
George,
Thanks for the details. I hate to think what would happen if an ECU went crazy like that with the engine running, on the ground or in flight. Glad it's rare but with electrical things I guess almost anything can happen.
Craig