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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through December 11, 2010 » System voltage error « Previous Next »

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Ridenusa4l
Posted on Friday, December 10, 2010 - 11:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ok everyone, since it started to get colder, my battery has been on the low side a bit, but everytime i start the bike and let it warm up the battery light goes off, and all is right with the world...

however last night i went to my buddies house 2mi. away and it did it again -no biggie- all was right with the worl when i left....THEN as soon as i start my bike and was about to come home, i get the system voltage error code and was like F@$K and then i proceeded to book @$$ home, the whole way home the check engine and battery light was on : (

now my question is, does the system voltage error code ALWAYS mean that it's the stator going out, or could it be the battery (#3), or the voltage regulator???

i have an 08' with an 09' engine and the stator recall, and i just had a new stator put in back in june....also i live 175mi. away from MY dealership, because i dont trust tucson hd from all the horror stories ive heard...i do have the extended warranty, so before my dad and i have to spend $$$ to come pick it up and bring it home, i thought i would ask you guys if it could be something other than the stator -hope so-

also, yes i checked the battery connections lol

THANK YOU!!!
Jake
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Daggar
Posted on Friday, December 10, 2010 - 11:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

System Voltage flashes across my screen, at startup, but no code or CEL. Sounds like your stator is going bad, from other posts I've read.
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Ridenusa4l
Posted on Friday, December 10, 2010 - 11:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ya thats what im thinkin too... : (

Jake
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Sparky
Posted on Friday, December 10, 2010 - 08:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you can put an external voltmeter across the battery posts with the engine running and the sys voltage message indicated to find out what the electrical system is doing, then you can probably determine if it's the stator or voltage regulator (VR) acting up.

If it reads much more than 16 VDC, it's likely the VR not regulating.

But if it stays around 12 VDC or lower while running, it's likely a bad stator. Then, a quick resistance check on the 3 wires from the stator (with the engine off and the stator plug disconnected), one wire at a time referenced to engine ground, can tell if the stator is internally shorted. There are other tests, but these are quick and easy.
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