A50 garbled VIN

[killerbee]

I have a bunch of A50 and T14 TCM's, presumably from working trucks or these were tossed as cores. Each one appears to have an LMM (...459) cal file or LML (...880) cal file, but each one has a garbled or nonsensical VIN when I check the status.

1. Does anyone know if this is normal, or what may cause it?
2. Does it indicate another problem with the TCM?

Thanks for whatever contribution you can make. Times are TOUGH in the module world right now, especially A50/T14 modules. Thousands of unrepaired trucks are stacking up. I pulled these TCM's out of deep storage and trying to do something with them.

[Blacky]

The VIN, along with other data that must remain permanently in the ECM when power is switched off is stored in the NVRAM (non volatile RAM) area of the flash memory.
That memory is made up of two banks of flash memory, so that a backup copy can be maintained. The backup is needed in case power is removed while the ECM is erasing/updating the data. One bank will always contain valid data - even if the other one has been erased.
EFILive makes an "educated" guess as to which bank contains the current/valid data. It could be that EFILive picked the wrong bank.

If you read out a few of the TCMs and send me the tune files, I can convert them to bin files and can investigate the data in the NVRAM area to see if it is viable or not.
Also send me a screen shot of the [F4: OBD] data for each TCM before you read it out.

Send then to paul@efilive.com

Regards
Paul