You cannot trust documentation that indicates an electrical problem is due to a failed PCM. You have tried several replacement PCM units and the issue is still present. So failed PCM is an incorrect diagnosis. So you will need to start with the basics, define the problem, and then proceed with a logical, methodical diagnosis to find the culprit.. . . ., I recently acquired a 06 pt and right off the bat I knew the battery light wasn't going to be a dead battery nor alternator. Needless to say, I found over a year old paperwork from a shop saying the pcm was bad. I tried my luck with a duralast preprogrammed pcm and wouldn't even test so I sent it back and installed the original. After that, I bought a dorman tipm and that didn't fix the errors which have changed from a battery light to p0700 and p0882. Just to rule out the tipm completely I installed a junkyard tipm. Same result. Now back to pcm's. I reached out to Myckee and have yet to get a response back. Unfortunately, I dont have time to wait. My question....where else can I go to get a pcm that is reputable? . . . .
Is battery fully charged? With a fully charged battery what happens when the ignition key switch is turned to the START position? Does starter engage, turns engine crankshaft but engine fails to start and run on its own? Or is there no action when ignition key switch is turned to the START position? Or will the engine run but the transmission is in limp mode (2nd gear only moving forward)?
P0700 is a generic code referring to the transmission controller and more detail is needed. P0882 indicates that the TCM (transmission controller portion of the PCM) has low power input.