Bricked Tesla SDU

[jaime12s]

Hello All,

New user here but I am quite familiar with the open inverter software and the Tesla small drive unit. I am a private car builder that converts various electric cars for clients.

It seems that I have bricked my logic board and am having trouble fixing it after extensively searching this forum for an answer. I was playing around with setting parameters using the CAN SDO protocol. Was trying to limit idcmax through CAN BUS to follow the broadcast value from the BMS (Orion BMS 2). Since this value is a parameter and not spot value, cant program the CAN map using the web interface. I was able to to successful get it to follow and report back the correct value but now my motor does not work. It throws a OVERCURRENT fault when powered up. Ive blown a couple inverters during testing and have experienced similiar feedback. Ive swapped the whole controller keeping the original logic board and still having same problem (aka not inverter hardware issue). Im trying to figure out how to completely wipe the logic board and re-load all new firmware. Re-uploading STM32_sine.bin doesnt fix it. Resetting parameters does work. Resetting CAN MAP doesnt work. The reset flash button on the web interface sends me to a new web page that says file not found. Cannot find the terminal command to reset flash anywhere. Getting super frustrated. Any help would be greatly appreciated. Any database of terminal commands would be greatly appreciated.

[johu]

Reflashing the firmware is hardly going to help. Trace back where the fault comes from, it can be UVLO, the 3 driver desats, interlock or the comparator. All signals must be high.
Terminal have been documented by catfish: https://github.com/jsphuebner/esp8266-w ... ROTOCOL.md