Putting the 95 PCM into the 94 PCM was something I did forever ago when we were first investigating EEHack's connection issues--the connection issues remained with the car. As I don't have an oscilloscope I can't tell if it's EMI on the data line or actual data on the data line causing the problem. I do see that the Service ABS does not illuminate on either car, though, and the 94 and 95 have different ABS units which may have different bus communication. That being said, WinFlash still has to hammer the '94 to get it to go through, so that could be a red herring. I really should get a scope, it'd come in real handy right about now...
By the 94 actually having a bad checksum, do you mean that the program currently running on the PCM has an invalid checksum in and of itself? Is there a way other than flashing a new program to it to be sure of that?
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