Not totally sure to be honest. CAN Low looks good - switching cleanly from approx 2.5V to 3.5V
CAH H is switching from about 1.3V to 2.3V so a little on the low side. The lack of high frequency content compared with the other channel makes me wonder if something is loading the signal a bit.
I dont think whatever is different with CAN H is enough though to cause any errors in communications.
Hopefully someone with more experience than me can comment further.
The CAN H & L look like normal. Sorry the picture in my post above, I activated filter on Ch B.
I most interest in why the one part of CAN H excessed 3.5 V (and one part of CAN L less than 1.5V). But while I disconnected the EBCM and VES, the CAN Bus swictched normally as standard(CAN H 2.5-3.5,CAN L 1.5-2.5).
The peaks at the end I see as normal, end of data message... The reason when removing the nodes the CAN changes is maybe because the message data is not being transferred
Thanks for your reply. Could you please explain that why the end of data message have peaks more than 3.5 Volt for CAN H & less than 1.5 Volt for 1.5 for CAN L?