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Discussion Starter #1
We just got back from an 800 mile trip and about halfway back the ABS light came on. When we slowed down going through towns sometimes it almost sounded like a whistle of hissing coming from the rear. Does this sound like they're related, or was I just hearing the wind hitting my saddle bags?
About a month ago when the bike was pretty hot the ABS light came on. Then the next day it went out, then on, and finally stayed off until yesterday. The common denominator was it was very hot out again yesterday when the light came on.
Any ideas?
Thanks.
 

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Did you check on code errors
 

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First thing i would check is the sensor ring clearance and or straightness of it since heat does cause things to expand it could be throwing the field off just enough to mess with the pickup.
 

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Discussion Starter #5
The rings are full of bugs, but how in the world can you tell if they're straight? Seems it could be much less then a visual difference that could trip the light?
I don't have a clue how to read codes.
 

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First thing i would check is the sensor ring clearance and or straightness of it since heat does cause things to expand it could be throwing the field off just enough to mess with the pickup.
don't know if the abs uses a magnetic pickup or a pmg or excitation field of some sort but would add to TechArtGuy's information, heat also increases resistance, and decreases magnetic fields in ferrous materials , so a borderline gap would fail under extreme conditions , the good news is you can check function on the center stand
 

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The rings are full of bugs, but how in the world can you tell if they're straight? Seems it could be much less then a visual difference that could trip the light?
I don't have a clue how to read codes.
If you have a dial indicator you can set it up against the ring and zero it then turn the wheel to see if the ring is straight.

To check the codes you will need to put the ECM in dealer mode. You do that by either getting the switch that attaches to the plug or by using a jumper wire to connect two pins in that plug. Once you do that the codes will appear on the dash display.
 

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Also avoid washing the sensor area with soap detergent, better use the abs safe brake cleaner
 

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Discussion Starter #9
My dealer did not tighten the rear axle nut, it was only half way on. (didn't tighten the swingarm either and lost a bolt) I hope this is what triggered my ABS light. ?
 

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bearing damage? did you comb his hair with a hammer ?
 

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My dealer did not tighten the rear axle nut, it was only half way on. (didn't tighten the swingarm either and lost a bolt) I hope this is what triggered my ABS light. ?
I would say that could cause it as it wasn't running true. Heat wouldn't be a factor because if it was all my ABS vehicles would have there light on.
I live in the desert were 110+ is the norm for weeks on end.:cool:

I pulled my own rear tires off the 400 I had. That way I knew for sure who had made any errors. Will be doing it on my 650 too.:rolleyes:
 

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Discussion Starter #12
Well, last night the weather was bad so I just ran it up on the stand, ABS light still on, still hoping, I ran it down the driveway and back, ABS light still on. Today, no rain, I go for a ride, and although it took a half a block, the ABS light went out! Yay!
 
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