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Anyone ever figure out how to unbrick a PCM?

industrialfish

industrialfish

New member
Seems my downfall was opening the car door while uploading a .bin with DHP. Next time I'll just stay in the car for the estimated 2 hour write time...
 


Any time I get an error while writing, I never turn the key to off, I go back and restart a full write, has worked every time so far (only 2-3 times total since I've had my PT). Once you turn that key to off, I think you're pretty much fked.
 
Yeah it warned me not to turn the key off, but after an hour of trying to recover and failing the same way each time, I had to try something new.
 
i bricked mine when the laptop crashed during a write. i tossed it in the corner of the garage and then 6 months later with a off board i got it to take a bin again.

i just kept playing with the vin # and auto recovery, forced recovery options and it finally took.
 


Lots of time HPT can do a recovery. Depending on the state it may need custom software to get it back or even a new EEPROM, its hard to know without know exactly where it failed in the process.

Sent from my VS986 using Tapatalk
 
I've had it fail on the VIN verification several times, give up on it....close the program and then try again with success. Pretty much what Decker said, it depends on where it's at in the writing. BUT....if you lose power or connection while it's in the process it's usually a gonner.
 
Alright then it's probably toast. The error I get is that it "Can't retrieve module 0A". It failed at about 8 percent into the write process which apparently was when I got out of the car. I had a battery tender hooked up so I wouldn't drop voltage but I didn't pull the radio fuse.
 
best thing to do is always have a spare. mines in my trunk. this reminds me, i need to flash this top swap tune to it now lol
 


Aaaand brick #2

4 ****ing hours sitting in the car this morning, furthest I got was %40. Eventually after probably 30-40 failed restarts the PCM just stopped communicating.

Gonna have to say it's looking like my 2005 is not one of the ones that can use DHP :/
 


are you pulling the radio fuse while reading or writing?


and always try to read a pcm first its less of a fail if it quits reading, if it crashed writing its over unless you dont turn the key off some say.
 
Pulled the bins from all three PCMs before attempting any writes, so that works, takes 10-15 minutes but didn't fail once. I don't have the option to do a partial write, and a full write takes between 120-240 minutes depending on block size selected.

Pulled the radio fuse. Never turned the key off at all this morning, was connected to the battery tender but DHP says my system voltage was at 0v.

Doesn't fail at the same spot ever. Sometimes it would write for 1-5-10 minutes and fail, attempt auto recovery, write a few minutes and fail again, sometimes write for an hour straight before failing.
 
get a newer dhp version. my dhp box is old as dirt and i have the partial write option and the clear fuel trims box.


and your reading and flashing is taking to long. im on slow speed and do a full write in 776 seconds. about 10 minutes iirc.

my block size is set to 1024. thats its default setting i guess and works fine for me, ive never changed it.


im using powertuner v1.2.4
 
I've got 1.2.4, hardware version 13. It's not DHP issue per se. 2005 isn't officially supported, you can only do full write on them so I knew there was a chance it wouldn't work right.
 
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