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My yamaha virago 1100 will not charge battery while running

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  • Yamaha Master
  • 58,369 Answers

Hi, Anonymous the following is a comprehensive charging system test that is guaranteed to the find issue with your system.
1. Battery Test: The battery needs to be a fully charged and load tested to ensure proper readings, connections need to be clean and tight. If you are not working with a fully charged and functional battery, all other voltage tests will be incorrect. Standing battery Voltage should be 12.5-13.2 DCV.
2. Charging System Voltage Test: Start motorcycle, measure DC volts across the battery terminals you should have a reading of approximately 13.2-15 DC Volts.
3. Check Connections/Wires: Inspect the regulator/stator plug, and check the battery terminals for connection/corrosion. If everything seems to be in order, move on to number 4 below to determine if there's a failed component.
4. Stator Checks/Rotor Check: Each of the following tests isolates the Stator & Rotor. If AC Output test Fails and Resistance Check, and Stator IB Test Pass then Rotor is at fault (Pull Primary covers and inspect rotor for damage).
5. AC Output Check:
Unplug the regulator plug from the stator
Start motorcycle and change Voltmeter to AC volts.
Probe both stator wires with your meter lead.
The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm. Reading will vary depending on system, check service manual specification
Generic Specs:
22 amp system produces about 19-26 VAC per 1,000 rpm
32 amp system produces about 16-20 VAC per 1,000 rpm
45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wires with meter leads and check resistance on the meter.
Resistance should be in the range of 0.1-0.5 Ohms. Reading will vary depending on system, check service manual for specification
Generic Specs:
22 amp system produces about 0.2 to 0.4 ohms
32 amp system produces about 0.1 to 0.2 ohms
45 amp system produces about 0.1 to 0.2 ohms
Stator IB test or Ground Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wire with your positive lead on the multimeter and the negative to ground.
There should be no continuity to ground on either wire.
If there is continuity to ground your stator is shorted to ground.
5. Regulator Test: Each of the following tests isolates the regulator only, so if any of these tests fail, the regulator is at fault.
Identifying Wires:
Battery Charge Lead- Wire going from regulator to battery positive.
AC output leads- Wires coming from the Stator to the regulator.
Ground- Wire from Regulator to ground or regulator may be grounded via the physical bolting to chassis.
Regulator Ground Test: Ensure the regulator body is grounded or grounding wire is fastened tightly to a good ground (you should verify this by checking continuity from regulator body to chassis ground).
Fwd/Reverse Bias Test/Diode Test: This check is testing the Diode function to ensure it is regulating the AC current for the stator into DC Current.
Switch multimeter to Diode Scale.
Place your Multimeter positive lead on each AC output wire.
Place your multimeter negative lead on the battery Charge wire.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the AC output wires and the Positive lead on the Battery Charge Wire.
The reading should be Infinite.
With your meter on the same setting, place your multimeter positive lead on the regulator ground wire or to the regulator directly, and then place your meter negative lead on the AC output leads.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the regulator ground and the Positive lead on the AC output wires.
The reading should be Infinite.
Note: Below is a table to show the readings:
Positive Lead Negative Lead Reading
AC output 1 Battery charge lead Voltage
AC output 2 Battery Charge Lead Voltage
Battery charge lead AC output 1 ?
Battery charge lead AC output 2 ?
Ground AC output 1 Voltage
Ground AC output 2 Voltage
AC output 1 Ground ?
AC output 2 Ground ?
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
ViragoTechForum com
http://www.sloneservices.com/SilverBack/Other-Stuff/VS-1100-chagre-syst.pdf
Yamaha Virago XV535 1100 1981 1994 Service Manual
OEM parts for Yamaha
Yamaha Virago XV1100K Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Mar 02, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 3567 Answers

SOURCE: looking for motorcycle yamaha virago vx250 manual

Google " service manuals yamaha "

or go to www.repairmanuals.com

Please rate this solution. Thanks mjlj128!

Posted on Apr 04, 2009

  • 15 Answers

SOURCE: 85 yamaha virago xv1000 are the coils & cdi igntor box interchang

YES

Posted on Jun 22, 2009

Benimur
  • 6966 Answers

SOURCE: yamaha virago 535 not charging on new battery and

Hi and welcome to FixYa,

Charging problems could either be a stator issue or a failed rectifier/regulator combo. To check:

  • measure the battery voltage with the engine off;
  • start the bike and measure it again, it should be slightly higher;
  • rev the bike, the voltage should rise as the RPM increases;
  • measure the voltage by pairs on the 3 white wires from the stator;
  • there should be AC voltage that increases as the RPM ncreases.
This of course presumes that the wiring, connectors, terminals have been checked, cleaned and tightened.

Good luck and thank you for asking FixYa.

Posted on Aug 19, 2009

  • 302 Answers

SOURCE: how do i adjust the idle on my 1995 yamaha virago

On most bikes and four wheelers, this is done by a throttle stop. the position of the stop is usually adjusted by a screw. Remove the tank. turn throttle and see what moves by the carb/ injectors. When you return throttle to idle, the moving piece will come to rest on the throttle stop. You can now adjust its position by turning that screw.

Posted on Oct 14, 2009

DoubleClutch
  • 376 Answers

SOURCE: yamaha xv 1100 virago

To me it sounds like the coil is breaking down and not working at higher RPM's. You can take them off and have them tested at a service shop.

Posted on Dec 12, 2009

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