Check the always on voltage sources to the CEM. Fuses 11B/9, 11B/16, 11B/17 & 11B/20. See attached file. Thank you @RickHaleParker for advice. All fuses are checked. However I think it has nothing with that. My car including CEM is working without problems and I think any blowed fuse would prod...

Hello thank you for suggestions. I am 100% sure that wiring is right. 1st I am electrical engineer 2nd I transferred wiring to the PCB according to the schematics from github. I tried independent 3.3V power supply, also DCDC from on board 12V to 5V but without success. I measured current trought USB...

Hello I found different kind of behaviour/problem with CEM cracker. My setup is Teensy 4.1 (same CPU as 4.0), 2x chinese VD230 CAN and breadboard setup with twisted pairs. Everything is powered up from Teensy so first I will try to change power supply, than I will try shorten twisted pairs which are...