PCM not connecting up any more. Bricked?

[altraditional]

Hello, I would like to ask some advice and experience:
I have a bench setup, I use motorcycle lead battery + battery charger as a power source. PCMhammer 021 and OBDlink SX. I have read and wrote 3-4 pcms with it.
Until this case, when I got the read properties done:
[06:14:51:913] OS ID: 12587603
[06:14:51:924] Hardware Type: P01_P59
[06:14:51:976] Calibration ID: 12587672
[06:14:52:024] Hardware ID: 12583660
[06:14:52:156] Serial Number: 1LA0B28S3279
[06:14:52:199] Broad Cast Code: YFXL
[06:14:52:247] MEC: 0

Started 'read entire PCM', got it done some percentage, and then it gave 'stpx out of memory bus busy'.

After that, after obdlink and pcm poweroff, it doesn't even do the read properties any more.
At least the OBDlink SX works, I tested it on another vehicle.

What could it be? What should be the next steps to take?

[antus]

Firstly, you cant brick the pcm due to a read operation glitching. The out of memory sounds like it came from the obdlink. So I would say either the OBD Link died, or as you say it is working elsewhere technically it is possible the PCM died. Very unlucky if it died at that moment, and its the first time ive heard of a failure mid read. Or something else in your setup like the charger or power supply hit a threshold where it no longer works.

Bus busy sounds like an interface failure or an electrical problem and the interface is just seeing random noise/data that is filling the memory. Sorry I don't have anything specific. My bet would typically be the obdlink for a failure like this but you say it works on other PCMs. I guess you need to swap things around until you can figure out which part of the puzzle the fault follows.

[altraditional]

Thank you for a quick reply!
I am having a hunch that maybe the harness shifted and bent the contacts and the data wire got +12V for anywhere between a moment and few minutes...
Does the symptoms sound logical?

[antus]

not sure. vpw is 8v and i'd expect 12v tolerance (actually something more like 16v even for automotive), but I've not tested to confim and if things were shorted something electrical could have happened. Most of these ECUs are built properly with quite good voltage protection to a point.

[altraditional]

Silly to say, but I hooked it up into bench harness again and it worked without any problems...