Other than an 06 Ford Freestar and a 02 Ram 150 pickup I had a while
back most of the PCM's I thought were bad turned out to have nothing
wrong with them.These mis diagnosed by me were old cars that I
sourced a used ECM cheap or got off E-bay or rock Auto reman for less
than $80, so it wasn't the end of the world to have to eat the pcm for taking a chance on .