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adamtheone / canDrive

Tools for hacking your car
https://www.youtube.com/playlist?list=PLNiFaO8hU1z0o_6DSxk-jcVAM3UCUR-pY
MIT License
545 stars 148 forks source link

CAN-High works but not CAN-Low #13

Closed Robin-ette closed 3 years ago

Robin-ette commented 3 years ago

I have an Opel Ampera-e and managed to get data from the CAN-High. I followed the diagrams from your Youtube videos as well as the connection diagram for the "switch-box". Pin 6 to H and Pin 14 to L, on the MCP2515, and 500E3 in the arduino code.

But when I went to read the CAN Low I have tried all different ways. Both connecting the Pins to 1 and 4, as well as 6 and 14. And changing the arduino code CAN_SPEED variable to 33E3. But I get the message , "Starting CAN failed!", both times.

Am I doing something wrong?

Thanks for help.

adamtheone commented 3 years ago

Hey, The low-speed can bus (GMLAN) is not present on all cars and not even all build-years. Have you check that your car has a low-speed can line?

Robin-ette commented 3 years ago

Hi, thank you for taking the time to answer. I figured out the problem, I forgot to add the CNF values for the 33E3.

Works now.