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Discussion Starter · #1 ·
I have a 2001 rubicon that the voltage regulator was charging 18 volts which killed my battery and caused the bike to go into limp mode. I replaced the regulator and battery the 30 amp fuse and the fuse for the fan, checked codes and it gave me code 9. I got my manual out and started all the trouble shooting after clearing codes, resetting and following the flow chart replaced the ECM, shift motor, angle sensor and the speed sensor. To no avail the bike is still limp mode and the speedometer does not register speed now. Does anyone have any ideas? Thanks in advance.
 

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Only thing I can think of at the moment is you may have lost the ground where the harness ground bolts to the frame, probably before the battery got smoked. Check that one and the negative cable bolting to the motor.

At this point I'd ask whether or not all of the parts you put on it were genuine OEM Honda parts?

Welcome to the forums!
 

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Also look for the diode (Starting Section in the service manual) and check that with your meter. Then ohm out your stator if you haven't yet...
 

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Discussion Starter · #4 ·
Yes, oem parts and I have checked the diode and stator and added an extra ground cable from battery to the frame. Thanks for the replys !
 

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Ya, sorry I don't have any more ideas to offer you. Maybe someone will pop in who fixed the same problem before on their bike. Good luck...
 

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The high voltage may have killed delicate electronic components. This is why I run an inexpensive less than five dollar DC voltmeter on my bikes. Cheap insurance.

Rick

Sent from my SAMSUNG-SM-N900A using Tapatalk
 

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Discussion Starter · #9 ·
The harness ground was 3 ohms. Still scratching my head. I may replace the wire harness next. I did find one thing I think is kind of odd is the pick up coil test came back with 6.3 peak volts.
 

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Discussion Starter · #10 ·
Just in case anyone has had this same or similar problem with regulator over charging and blowing the fuses along with the bike going into limp mode. My solution was the regulator was bad and for some strange reason the cdi had shorted and also the display had shorted. So after replacing regulator, cdi and display, not to mention all the head scratching and choice words the bike is now good to go. Thanks for all the suggestions!!
 

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Just in case anyone has had this same or similar problem with regulator over charging and blowing the fuses along with the bike going into limp mode. My solution was the regulator was bad and for some strange reason the cdi had shorted and also the display had shorted. So after replacing regulator, cdi and display, not to mention all the head scratching and choice words the bike is now good to go. Thanks for all the suggestions!!
a costly repair ?, but glad ya got it going !.
 
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