Problem with USB to CAN

General
#1

Hi Everyone,

Hoping for a little help. I have a SEEED USB-CAN device. The CAN-HI connection goes to pin 6 and CAN-LO to pin 14 of the OBD2 plug. I also connected the ground of the SEEED to pin 5. When I connected the OBD plug to my 2020 Jaguar F-Type R, which was completely off, as soon as I pushed the start button to put it into accessory, it immediately took down the can bus. The car became completely inoperable, no response at all to anything, for about 30 or 40 seconds. Finally, I was able to get the car to respond, and everything seems fine (I am gonna read for trouble code shortly) but I can’t figure out what I did wrong, other than perhaps connecting the OBD2 ground pin to the SEEED. Anyone have any ideas?

TIA
Michael

#2

Hi there,
Not sure but I believe the CAN uses an Isolated GND so GND_ISO are not connected.
HTH
GL :wink: PJ :v:

#3

I will try that, thanks.

#4

Unfortunately, that was not the solution.