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Title: EDC15P+ CANBUS problem with communication Post by: djexit on November 19, 2017, 03:46:27 AM Hello,
I have to build device based on Arduino and canbus module to monitor and react to some specyfic engine values like boost. Boost pressure value is default not sended by ecu via canbus, i must estabilish diagnosis session and ask ecu for actual boost pressure value (VW Transport Protocol). It is cleary simple, i helping myself by this tutorial: https://jazdw.net/tp20 (https://jazdw.net/tp20) but I stuck on first step :cry:. If I send initialization packet (dest: 0x200 data: 01 C0 00 10 00 03 01), ecu receive them and reply with error packet (00 D8 00 what means "negative reply"). See attached video where I demonstrate this strange behavior. I tried combining with initialization packet values but with no success, ecu always reply with "negative reply" packet. Can somebody help me ? https://www.youtube.com/watch?v=jUn43R7-vVg (https://www.youtube.com/watch?v=jUn43R7-vVg) (https://preview.ibb.co/hWK8iR/canerror.png) (https://ibb.co/gr1ccm) Title: Re: EDC15P+ CANBUS problem with communication Post by: nihalot on November 19, 2017, 09:06:55 PM Hi, I did look into this and posted my results here:
http://nefariousmotorsports.com/forum/index.php?topic=12567.0title= However I didnt have much time to look into it further... let me know if you get any success :) Title: Re: EDC15P+ CANBUS problem with communication Post by: djexit on November 20, 2017, 02:50:38 AM Hi, I did look into this and posted my results here: http://nefariousmotorsports.com/forum/index.php?topic=12567.0title= However I didnt have much time to look into it further... let me know if you get any success :) Yup, I read Your thread, but in my situation ecu don't initialize diagnosis channel. Only reply that i receive from ecu is "negative reply" and next steps have no effect. Maybe failure reason is I have ecu connected only to power supply and diagnostic interface "on the desk", not in the car. |