Jamiem Posted October 5, 2023 Share Posted October 5, 2023 Hi. I have flashed a zf 6hp26 tcm about 30 times and now it won't communicate with pcmtec or forscan. Have checked power to trans plug from battery and key on. What is the chance that I have bricked it ? Quote Link to comment Share on other sites More sharing options...
Bill Posted October 5, 2023 Share Posted October 5, 2023 46 minutes ago, Jamiem said: Hi. I have flashed a zf 6hp26 tcm about 30 times and now it won't communicate with pcmtec or forscan. Have checked power to trans plug from battery and key on. What is the chance that I have bricked it ? I've seen a couple of bricked TCM's & it's usually been the result of trying to flash with low voltage or high temp. I'd ask what codes you have but you have no COMMS. If you think you may have bricked it because of one of these problems or others, send me a PM & we can discuss possible recovery options. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted October 5, 2023 Share Posted October 5, 2023 Check your logs for the temperature. It needs to be below 85c from memory. When they got into a a brick mode they run 100% and take a long time to cool down. Try again in the morning. Our bench ZF would get hot enough to boil water if we left it bricked overnight. We ended up putting a hearsink on it during development. Normally they are cooled via the oil. Quote Link to comment Share on other sites More sharing options...
Jamiem Posted October 5, 2023 Author Share Posted October 5, 2023 Hi, Thanks for the response, just checked the last 4 logs before the comms loss and trans temp wasn't above 54 degC as it has a front mount trans cooler. i did try depowered over 24 hrs and still no comms and that is when i checked batt power and key on power to trans plug. i have been looking into purchacing module 77 (jlr zf 6hp26) for pcmflash to try to recover data from another zf and load it to the bricked one but may be send it to someone to do that. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted October 5, 2023 Share Posted October 5, 2023 Check the txt log files in the %appdata%/pcmtec folder. It reports the ZF cpu temperature on flashing. It will be substantially higher. I've never personally heard of someone bricking a ZF but try Whiteford tech of use pcmflash over Kline to attempt to recover it. Quote Link to comment Share on other sites More sharing options...
Jamiem Posted October 6, 2023 Author Share Posted October 6, 2023 Thanks Roland To confirm that comms and power etc in the vehicle are making it to the zf I plugged another trans into the loom and can read that one OK. Will pull the module from the trans over the weekend. Jamie Quote Link to comment Share on other sites More sharing options...
Jamiem Posted October 9, 2023 Author Share Posted October 9, 2023 Have swapped the tcm and trans is working again. Have sent the bricked tcm away to see if it can be saved. Quote Link to comment Share on other sites More sharing options...
Bill Posted October 17, 2023 Share Posted October 17, 2023 Update on the bricked TCM. The TCM is now recovered. It arrived & FORScan would find the TCM but would only recognise the OS calibration, not the 7J105 calibration. Identifying the TCM with other software, confirmed the same thing. It's been re-flashed with a full OS & calibration write, tested & will be posted back tomorrow. 1 Quote Link to comment Share on other sites More sharing options...
Jamiem Posted October 17, 2023 Author Share Posted October 17, 2023 Thank you so much Bill. Really appreciate your help. 1 Quote Link to comment Share on other sites More sharing options...
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