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https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl >> >> Can BUS Confusion https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl?num=1511819271 Message started by James H on Nov 27^th, 2017 at 1:47pm

Title: Can BUS Confusion
Post by James H on Nov 27^th, 2017 at 1:47pm

I am scoping Can BUS Low and High signals off a Aprilia Tuono 1000cc motorcycle just for interest as I have never looked at Can BUS signals before. I know this stuff is old hat to most of you on here so can you enlighten me as to why I am not seeing a mirror image of the 2 signals. At least that is what I have read. Thanks

canbus.jpg (132 KB | )

Title: Re: Can BUS Confusion
Post by Mick on Nov 27^th, 2017 at 2:08pm

James H wrote on Nov 27^th, 2017 at 1:47pm:

Maybe you are tasting the same wire by default.
These wires are usually sitting next to each other in a connector and our probe will look as if we a aiming for A and B but in reality we go A only.

Or Motor Bikes are completely different than cars :-/

Title: Re: Can BUS Confusion
Post by James H on Nov 27^th, 2017 at 2:53pm

Thanks Mick. My eyes are not what they used to be...even with glasses, lol, but In my defence I had my 2 younger techs check as well. Guess what, maybe they need glasses. It is very tiny and cramped so I guess it must have been on enough of an angle. Live and learn.

Title: Re: Can BUS Confusion
Post by Logic on Nov 27^th, 2017 at 11:13pm

I concur with Mick

Title: Re: Can BUS Confusion
Post by StitchB on Nov 28^th, 2017 at 4:26am

James I third, look like the same signal.

Title: Re: Can BUS Confusion
Post by Spence on Nov 28^th, 2017 at 5:23am

StitchB wrote on Nov 28^th, 2017 at 4:26am:

James I third, look like the same signal.

I 4th it 8-)

Title: Re: Can BUS Confusion
Post by James H on Nov 28^th, 2017 at 6:43am

I now 5th it. ::)

Title: Re: Can BUS Confusion
Post by Spence on Nov 28^th, 2017 at 7:30am

James H wrote on Nov 28^th, 2017 at 6:43am:

I now 5th it. ::)

Do I hear a 6th? [smiley=laughing2.gif]

Title: Re: Can BUS Confusion
Post by Spence on Aug 10^th, 2018 at 4:02pm

James did you ever find out what was up with this one?

Title: Re: Can BUS Confusion
Post by James H on Aug 11^th, 2018 at 8:10am

Hi Spence, embarrassed to admit but Mick was right on. Probe had snuck thru and touch the Can H wire so it was the same signal. My inexperience on Can bus shows but smarter now. lol

Title: Re: Can BUS Confusion
Post by Spence on Aug 11^th, 2018 at 9:09am

James H wrote on Aug 11^th, 2018 at 8:10am:

Hi Spence, embarrassed to admit but Mick was right on. Probe had snuck thru and touch the Can H wire so it was the same signal. My inexperience on Can bus shows but smarter now. lol

Hi James. No worries, don't be embarrassed and Mick was just showing his experience as you have now gained.

I happen to have one doing it and the probes are connected properly. Go figure... 8-)

Thanks for the reply! Hope all is good in your world.