Hacking and reverse engineering of the VW Onboard AC chargers to permit use in EV Conversion projects.
Charger #1 from a 2021 Seat Mii part number : 5QE915681BP
Data connector has +12v, GND, PT CAN, HYB CAN and two HVIL loop wires.
Two CAN busses running at 500kbps.
Sending 0x570 DLC8 0xFF 0x00 0x00 0x00 0x00 0x00 0x00 on PT CAN at 1 sec intervals wakes charger
Charger then sends data on Hybrid CAN interface.
ID 0x1BFE2204 on HYB CAN seems to contain HVDC voltage
ID 0x1BFE2206 on HYB CAN seems to contain AC Mains L1 - N voltage
ID 0x1BFE2207 on HYB CAN seems to contain AC Mains L2 - N voltage
Charger #2 From a Golf PHEV part number : 5QE915682AK
Two CAN busses running at 500kbps.
No wake up required.
20/11/22 : Added a very crude arduino due sketch to run the phev charger. Fails after a few seconds.
-Added CAN log from one such test.
-Video with details released soon.
29/11/22 : Arduino Due sketch updated. Now runs charger without errors.