The Challenger keeps throwing a P0622 Generator Field Terminal Circuit. I did some research and it looked like it was the Alternator.. I removed the Alternator and took it to a local auto parts store for a bench test. They determined that it was bad so I spent the 392.00 for a new one but I am still getting the same code. The car is charging just fine and the battery is good.

This leads me to believe it is a faulty wire or possibly the PCM.

Question.. If I change out the PCM can I use my Diablo Predator to flash the new one with the original tune and be successful or does the dealership have to do anything special to it?