VW Can Log with Engine running

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Bigpie
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VW Can Log with Engine running

Post by Bigpie »

Does any one happen to have a can bus log from a VAG car engine can bus with the engine not running and then starting it?
While I have no dash warnings, I'm not convinced my ABS is working as it should and I wasn't smart enough to take a log before removing the engine.
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Re: VW Can Log with Engine running

Post by arber333 »

Bigpie wrote: Thu Dec 15, 2022 2:50 pm Does any one happen to have a can bus log from a VAG car engine can bus with the engine not running and then starting it?
While I have no dash warnings, I'm not convinced my ABS is working as it should and I wasn't smart enough to take a log before removing the engine.
Yeah... i also made a mistake.
After i pulled engine from Mazda ABS was working as before just on 12V. But some idiot (wonder who) went and cut ECU cables which were probably supplying some signals to brake booster or maybe GND level...
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Re: VW Can Log with Engine running

Post by Bigpie »

The ABS is broadcasting it's own can messages, so I'd assumed it was working. Had a colder winter this year and ice so far so was able to test and lock the wheels up.

I'll consult the wiring diagram incase I've missed something obvious.
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Re: VW Can Log with Engine running

Post by Doig5710 »

What sort of spec vehicle? I have a 2007 passat manual diesel 4wd or a 2009 A4 fwd cvt I can get logs from this weekend if you give me a good description of how to lol I have a working savvycan as well.
Both cars do have engine fault codes but abs and traction control works fine in both
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Re: VW Can Log with Engine running

Post by Bigpie »

2003 Beetle, but don't think they change the messages that much. I'm not sure where you could easily access though on those cars I'll have to consult Google
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Re: VW Can Log with Engine running

Post by johu »

Just realized I took one single log file before pulling the engine. Hope it's of some use
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Re: VW Can Log with Engine running

Post by golfdubcrazy »

on the mk3 golfs the ABS was completely independent , on the mk4 golf (same as the beetles) the ABS should still be completely independent its only if you have a ESP where it would listen for engine information (rpm, torque) to then send out torque limitations (when required).
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Re: VW Can Log with Engine running

Post by Bigpie »

I do have ESP, but I'm sending the RPM, I think I might be missing the torque though. Thanks for the log, will have a look :D

I notice on your log for 0x288
Screenshot 2022-12-16 at 9.48.33 am.png
Screenshot 2022-12-16 at 9.47.30 am.png
Which I'm not replicating, I need to navigate the german in the DBC and experiment when we get ice again.
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