[Timgreen5000]

Hi guys, 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? Thank you in advance....Tim

 

[AllanC]

. . . ., 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? . . . .

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.

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.

 

[Timgreen5000]

I understand that it could be numerous possibilities. But, a shop has already has diagnosed it with a bad pcm. I just need a reputable person or company that do remans. Unfortunately, time is not on my side.

 

[ImperialCrown]

Welcome to Allpar. It went from a charging system fault (battery light), so a reman PCM was tried, then to a transaxle fault with a different TIPM back to a charging system fault when the original TIPM was re-installed?
Trying a reman PCM (maybe defective out of the box?) didn't solve the problem & possibly had a different problem?
When you say that it 'wouldn't even test', do you mean that it didn't power-up?

To be on the safe side, I would want to confirm that previous diagnosis guess. It could save a lot of time and end the rabbit holes.
Swapping modules is a bad method of repair. If it didn't fix the problem the first time, I would want to make sure that the information that I was working with is correct first before continuing.
The charging system voltage regulator is inside the PCM. Make sure that it is the actual culprit.

Google around for a 'Mopar R503444AE'.

 

[Timgreen5000]

Not exactly, the original pcm started with a battery fault that migrated to a transaxle fault. The car remained in limp mode after installation of new pcm. I couldnt get any code readings on new pcm due to "loading error" at obd and was redeemed bad from stock. So, old pcm reinstalled and new returned back to autozone. I googled Mopar R503444AE and didn't find anything. Everything points to a bad pcm and even a shop diagnosis. Thank you

 

[valiant67]

@myckee is the PT Cruiser PCM expert

 

[ImperialCrown]

I'm sorry. I typo'd. Try 'Mopar R5034440AE'.

 

[Timgreen5000]

I reached out to him. I haven't gotten a response back. Hoping someone can help me out.

 

[Timgreen5000]

I sent a message to Myckee but gotten a response back. Thank you Imperialcrown, I do want to get second opinion on the diagnosis before changing the part. I just wished there was a test just to check the pcm for proper functioning.

 

[ImperialCrown]

A P0882 can either be a TCM or a TIPM issue.

Search results for query: p0882

www.allpar.com

Check for fault codes in the TIPM.
These are not OBDII codes and may need a more capable scan tool to read.
See 'Possible Causes':

 

[valiant67]

I sent a message to Myckee but gotten a response back. Thank you Imperialcrown, I do want to get second opinion on the diagnosis before changing the part. I just wished there was a test just to check the pcm for proper functioning.

He is a busy guy and may not visit the forum as regularly. @chuzz might know if there is another way to contact him

 

[Timgreen5000]

It should be noted that I did clean up the grounds and removed painted surface from fender. Added dielectric grease to attaching points also. No corrosion was found and problem didn't change. Also, battery sits at 12.5+ volts and 14.25+ while running.

 

[85lebaront2]

If you determine that the PCM is definitely bad, I have had good luck with Auto Computer Exchange on eBay. They will flash the replacement based on your VIN and if there is a problem will send another one.

 

[ImperialCrown]

It appears to be charging OK. There was a TSB #18-007-07 to flash the PCM for an erroneous P063A-generator voltage sense circuit.

 

[Timgreen5000]

If you determine that the PCM is definitely bad, I have had good luck with Auto Computer Exchange on eBay. They will flash the replacement based on your VIN and if there is a problem will send another one.

Thank you, I'm going to set an appointment today to get a confirmation. Hopefully, this will be the end all the problems.

 

[chuzz]

He is a busy guy and may not visit the forum as regularly. @chuzz might know if there is another way to contact him

Unfortunately, I have no other way to contact Mike. I use the Allpar site to contact him. I'll see if I can PM him.

 

[Timgreen5000]

I appreciate that, I have an appointment on Monday to get a second opinion.

 

[chuzz]

I appreciate that, I have an appointment on Monday to get a second opinion.

No problem, Tim. He hasn't been on the forum in about a month now.

 

[Timgreen5000]

I noticed that he didn't quickly respond in a different thread. I understand totally. I'm constantly busy with home life and work. I'm older now and learned patience is the key for success.

 

[AllanC]

. . . .I appreciate that, I have an appointment on Monday to get a second opinion. . . . .

Everyone is thinking failed PCM but there is a lot of "hand shaking" going on in communication between the PCM and TIPM in regards to electronic transmission control. Any compromise in wiring, connectors, etc can cause this code P0882 to be set and the PCM is NOT necessarily the cause.

Attached image goes into detail the theory of operation that contributor ImperialCrown presented in post #10. The PCM signals the TIPM on circuit T15 to power up the transmission control circuitry. So a valid signal must be present on the T15 circuit between the PCM and TIPM.

Before the TIPM powers up the transmission control on circuit T16, it checks the T16 circuit for open, short to ground and short to power. If all checks are valid (no compromise) then circuit T16 is powered up. Follow the checks outlined on circuitry and connectors to make sure wiring integrity is good. The source of the problem may be the wiring and / or connectors and not the PCM or TIPM. A digital volt - ohm meter would be a proper test instrument for checking this circuitry.