Question about 2000 kawasaki ZX-12R

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I have a 2000 zx12r bike was not charging put a regulator on it now it is overcharging around 15v at idle regulator getting really hot someone has run new wires from regulator to battery any ideas

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  • kawasaki Master
  • 40,013 Answers

Hi, Daniel make sure the regulator has a good, clean, tight ground, the systems check below is geared towards Harley Davidson so exact numbers might differ slightly with book specs on your bike but the basic principal is the same, in order to check out any main electrical system, you have to start with a fully charged battery 12.5 volts or better, and be able to pass a load test if necessary. "WARNING" never plug or unplug any electrical connector with the engine running !!!
1. Check battery terminals for damage or corrosion, check battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
2. Check the voltage drop at the battery when you hit the starter button, anything below 9 volts you might have a faulty battery.
3. Check voltage at the battery with the bike running at 3,600 RPM should be 14.3 to 14.7 volts. If you are not getting these numbers, you might have a faulty voltage regulator.
4. Make sure voltage regulator is "GROUNDED" and functioning properly, watch the video below on how to test a voltage regulator.
5. Unplug the connector to the alternator and hook your multimeter leads to the alternator (pin/socket selection does not matter) set the multimeter to AC volts, at an idle the multimeter should read 16 to 20 volts AC. at 2,000 RPM 32 to 40 AC volts, 3,000 RPM 48 to 60 AC volts. If you are not getting these numbers, you may have a faulty alternator rotor.
6. Set the multimeter to OHM'S, connect one lead to the alternator (any pin/socket) and the other to a ground, the multimeter should read infinity. Connect both leads to the alternator multimeter should read 0.1 to 0.2 OHM'S. If you are not getting these numbers, you have a bad stator.
7. Check all wiring in the charging circuit for worn or chaffed spots and all wiring connectors in the circuit for corroded, broken, or loose pins/sockets, which is the # 1 offender.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
99 ZX7R Alternator Overcharging
https://www.electrosport.com/media/pdf/fault-finding-diagram.pdf
Kawasaki NINJA ZX 12R Service Manual
OEM Parts for Kawasaki
Owner Manuals Service Manuals Kawasaki Vehicles

Posted on Dec 10, 2016

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2336 Answers

SOURCE: bad regulator?

Fuse 2 is actually the fuse from the regulator to the battery (see schematic below) - so if it's blown then you are not charging the battery. Put the correct fuse in - if it blows again, you may have a shorted regulator. Unplug both connections to the regulator: With your test meter set to 'ohms' check in turn between each of the three yellow wires in the 3-pin connector to both the red & blacks in the 4 pin connector (the two reds are already connected to each other, as are the two blacks). Also check between the reds & the blacks. None of these should readings be 'short' (zero ohms). Inspect the wiring at the three-pin connector - if the bike's harness looks charred/burned that is a sign the regulator has shorted. There is possibility it could have taken the stator with it. Incidentally, the cable that plugs into the three pin connector - that should be a replacement auxiliarry harness: the original was deemed too small gauge for the job & was replaced with the auxiliary one as a recall. You should find that cable is stand-alone from the main bike harness and you can follow it back to the stator output connection. At both ends you should find the connectors of the original harness that is 'laced' into the complete harness. If you do not find that auxiliary harness, you need to get it. You should be able to get it at no charge from Triumph if the records on your VIN show it was never supplied.

Posted on Nov 10, 2008

goofduck
  • 490 Answers

SOURCE: 03 zx12r clutch wont disengage

the clutch disks are stuck together

Posted on Apr 21, 2009

Benimur
  • 6966 Answers

SOURCE: 1993 Kawasaki 750R - Model M , charging issue - WEIRD !!!

Hi and welcome to FixYa,

Initially, have you checked the 30 Amps main fuse and its holder clips? It would be integrated with the starter relay. The fuse or the fuse holder may have heat related problem(s) causing it to loose conductivity when hot.The fuse may require replacement even if it tests good and/or the fuse holder would need cleaning / crimping. To locate the starter relay (main fuse), follow the battery cable from the + terminal of the battery.

Please postback results.

Good luck and thank you for asking FixYa.

Posted on Jul 09, 2009

  • 4 Answers

SOURCE: 1988 Honda VT800 shadow will not keep battery

mine does the samething. i spent a lot of time and money trying to fine out why. lets just say if i keep the rpm's up so will the battery.. a new stater and a new reckdafier yeah i cant spell but you know what iam talkin about if you know your bike... and make sure you ck our lil black box. i end up get everything all new to make mine work.. its a pain.

Posted on Jul 14, 2009

  • 130 Answers

SOURCE: if you charge the battery

Unfortunately you cannot check the regulator portion of the regulator/rectifier. The common failure on these units is the stator itself, which is located in the rear of the motor and requires motor removal to replace. If you haven't done so already, check the stator connector (3 pin connector with yellow wires located near the battery). Often these leads develop resistance and get hot and melt the wires in this area. A repair kit is available from Honda with new wires and connectors. However first I would check the stator to be sure it is ok. You can check resistance between each of the yellow wires. The readings should be fairly equal and should have no continuity to ground. If you have continuity to ground, your stator is bad. You can also check AC output between yellow wires with the motor running, you should get voltage readings from about 20VAC at idle that increase to approximately 60-90VAC as the motor is revved up.
Hope this helps.

Posted on Aug 21, 2010

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1 Answer

My Yamaha vmax is charging the battery @ 20 volts. Already replaced voltage regulator. Thought that would fix the problem. Any ideals??


You should take some measurements on your stator cables at idle. Between each pair of the three same colored cables that runs up on your regulator, you should have 14-15V at idle and 30V at 3000rpm of Alternative Current (A.C.).

Feb 03, 2012 | 2000 Yamaha V-Max

1 Answer

THE BIKE WONT KEEP A CHARGE


Remove the seat to access the battery.
A loose battery connection will prevent charging, Tighten if loose.
If tight, start the bike.
Use a multimeter set on d/c volts or just a volt meter.
Hook red to positive and black to negative.
should read 12.50 volts - 13.50 volts at idle.
Anything under 12.50 means not charging at idle.
Rev motor to 2000 rpm. the meter should read 13.50 - 14.8. If the volts do not change, then your bike is not charging, Anything Higher than 15.0 means that your bike is overcharging, which usully fries the battery and blows the headlight fuse and/or main fuse.

If over/undercharging, this means that the voltage regulator is bad.
Before you buy another one, make sure the one you have is plugged in all the way and that the connectors are clean.
I had a GSXR 750 that sat for a while and i had to clean every connector on the bike before it would run/operate like it should, so a dirty or loose connection should be checked first.
Saves you a lot of money too because voltage regulators are usually over $100.

If you do not ride for months at a time, your battery will discharge over time.
a battery tender or battery charger is needed to keep the battery charged when the bike is not in use. Motorcycle batteries are not like car batteries, that seem to last forever. 4-5 years is about all you'll get out of a motorcycle battery on a motorcycle that is ridden alot.
On a motorcycle that is barely ridden, won't last much more than 2 years if your lucky.
Hope this information was helpful
Best regards
Big Al

May 28, 2011 | 2000 Suzuki GSX-R 750

1 Answer

On my 2000 zx12r my battery drains and bike shuts down while riding. Battery is new stator rebuilt and used regulator. What could be still causing this issue?


Hi,,,if your battery is not charging and you have a rebuilt staor,,then your regulator/rectifier is the cause,,its job is to charge the battery.

Mar 24, 2011 | 2000 kawasaki ZX-12R

2 Answers

Good evening sir, I have yamaha R1 bike. in bike yesterday battery discharge than charge the battery. today bike start and running but after .5 miles bike is stop running, self is not running and battery...


1998 to 2002 have problem with plug to voltage regulator/rectifier which is under seat. connectors in plug overheat and bike stops charging the battery. you will see if connectors have been hot and will need to be replaced if they have.
once replaced check bike charging with multimeter at battery,should make 13.5 - to 14.5 volts just above idle. if not will need to test stator and regulator.

Aug 11, 2010 | Yamaha YZF-R1 Motorcycles

2 Answers

Honda cbr 600fw not charging or is running off battery as bike died when riding at night with lights on


need to have stator checked and regulator. May have bad battery but doubt thats the only problem

Sep 05, 2009 | 1997 Honda CBR 600 F(3)V

1 Answer

Harley 03 Ultra overcharging, 16 volts


14v is not overcharging. 16v is pushing it. I'm with the regulator opinion, but I would also load test your battery. If the charging system thinks your battery is low it will try to compensate by putting out max voltage, putting additional strain on the regulator, which in turn overcharges the battery... creates a vicious cycle. Is the regulator in a spot where it gets quite warm? They have a tendency to overcharge when hot. If that is the case, try relocating it or directing more airflow over it.

Jun 26, 2009 | 2003 Harley Davidson FLHTCUI Electra Glide...

2 Answers

Battery light on and firing on three cylinders


ah the old 5G2 nice bike.

if sat around for a year the battery will be shot, so it will not take a charge or hold it, that may be why the warning light.

after a year idle the carb jets will gunge up,

might you have no spark because the battery is so flat?

a year laid up... why.? did it have a fault then? carb diaphragms don't like being laid up, nor carb slides, one may be stuck in the old petrol residue.

think I'd be tempted to try a new battery, and if not charging, the regulator probably packed up, beware though, a shot regulator can feed ac through to the battery rather than DC, and it will bust your new battery. loads of people fall for that one.

May 09, 2009 | 1983 Yamaha XJ 650

1 Answer

03 zx12r clutch wont disengage


the clutch disks are stuck together

Apr 21, 2009 | 2003 kawasaki ZX-12R

2 Answers

What would cause the battery to heat up so hot that it would boil


Failed voltage regulator could do it too. If you can start the bike, put a voltmeter on the battery or charging system output. Should be around 14-15 at 3000 rpm. If it is much over that your voltage regulator is probably bad. Sometimes those regulators overcharge when they heat up too, if yours is in a location that does not get much airflow it may be possible to relocate it somewhere more "in the wind".

Apr 06, 2009 | 2002 Yamaha V Star 1100 Classic

1 Answer

1996 chevy cavalier


The reason it all goes circuslights could be that the alternator is overcharging.
The charge rate increases as the load and engine revs go up but only supposed to be a little, thats what the voltage regulator on the alternator is for.. when the regulator fails and alternator is overcharging eventually enough power is sent through the ground to light everything up and the computer cannot run properly.
High voltage levels cause sensors to read incorrectly so the computer cannot manage the engine.. Suggest you check out the charge cicuit at idle, at 2500 and at 3500 revs (briefly!)
Charge should be between 13.5 at idle, to 14.6 at 3500
Its a starting point for diagnosis.
Note that putting the alternator on a machine at Autozone will not necessarily pick up the fault - it needs to be checked ON the vehicle.
Hope this helps

Jan 07, 2009 | 1996 Chevrolet Cavalier

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