CAN BUS TROUBLE SHOOTING

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Re: CAN BUS TROUBLE SHOOTING

Postby ronw38 » Tue Apr 24, 2018 11:08 am

Your methodology makes sense , where are the scope patters to support it .If you have solved problems with this present the data .We all learn from participation and sharing
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Re: CAN BUS TROUBLE SHOOTING

Postby RYM6746 » Sat May 12, 2018 10:38 pm

These are just notes that I have written down to help people whilst they are trying to trouble shoot a CAN fault. They can just pop on here and run through the list and see if there is a step that they have forgotten/missing. It is not a a case study or a diagnostic discussion. Its merely a diagnostic aid to help someone out if they are struggling. Sorry for the lack of scope captures
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Re: CAN BUS TROUBLE SHOOTING

Postby pepe1125 » Sun Oct 07, 2018 1:27 pm

Hi,

We have a CAN BUS communication issue.

We measured the CAN H and CAN L data line and one of the signal level is LOWER than the others.

What's caused this? :|
Attachments
CAN PROBLEM_01.png
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Re: CAN BUS TROUBLE SHOOTING

Postby liviu2004 » Mon Oct 08, 2018 12:11 pm

Connector / wiring extra resistance, power supply to the respective module insufficient, bad CAN transceiver inside module.0
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