Hi everybody, I have a 2007 S4RS with 4000 miles that I've owned for 2 months now and am having a charging problem I think. I first noticed it when I went for a ride and stopped to fill it up with gas and it wouldn't start again. I was able to bump start it in 2nd gear and drive it 2 miles to home but it was running pretty rough and died right when I pulled into my driveway. I figured the battery was 3 years old and needed replacing so I did that. The next time I took it out for about a 15 mile ride it started running rough right at the end again so it probably wasn't the battery. When I started looking around at the alternator side I noticed an unplugged connection and am wondering if that has anything to do with my problems. It seems pretty short and I can't find the other end to it though. It travels up the left frame tube and is zip tied to the clutch line and then disappears into the big wire loom and is lost from there. There is also a zip tie that is very loose near the plug that might have held something? The wire colors are light blue, green with blue stripe, red with blue stripe, and black with blue stripe. Can anybody tell me what this plugs into and if this is causing my charging failure? It doesn't look like anything was accidentally pulled out. I'll try to attach a picture of it. Thanks for all the help. The nearest dealership is over three hours away and I don't have a trailer.
(http://i83.photobucket.com/albums/j287/cali-gator/Ducati/th_149.jpg) (http://s83.photobucket.com/albums/j287/cali-gator/Ducati/?action=view¤t=149.jpg)
(http://i83.photobucket.com/albums/j287/cali-gator/Ducati/th_147.jpg) (http://s83.photobucket.com/albums/j287/cali-gator/Ducati/?action=view¤t=147.jpg)
That's not it.
Lift your seat. Underneath is a box with fins on it. That's your regulator/rectifier. It's the box that charges your battery. Here's a photo of mine.
(https://farm5.static.flickr.com/4002/4692052826_a3c42b9959.jpg)
There are seven wires going into it. Two green (ground), two red (battery +), and three yellow (alternator).
The red and green wires go to a white rectangular plug that goes to the battery. On mine it's tucked in on the left side of the bike, around the back of the tank. Yours will be in a similar place. Check that the connector there is snug.
The yellow wires go to another white rectangular connector close by. Check that that's snug as well.
sorry i cant help with that connection from your pictures. i have moved all the wiring around on my bike (and its a 2v...) so no help there. It does look kind of like the connection to the lambda sensor, but not sure...and that would not do anything for charging.
have you checked the connection to the regulator/rectifier? i have had problems with that connection in the past, leading to dead batteries. on the 2v, it is under the seat near the regulator. a white connection if i remember correctly.
good luck with the bike!
Thanks for the quick replies. I'm going to go and buy a cheap multimeter either tonight or tomorrow and check my actual voltages. I want about 13 volts while running right? Just a wild guess but my bike has a full Arrow system on it with a reprogrammed ecu so would that plug have been for the O2 sensor or something? Thanks again for the quick replies.
Quote from: RNRatchet on June 27, 2010, 05:03:01 PM
Thanks for the quick replies. I'm going to go and buy a cheap multimeter either tonight or tomorrow and check my actual voltages. I want about 13 volts while running right? Just a wild guess but my bike has a full Arrow system on it with a reprogrammed ecu so would that plug have been for the O2 sensor or something? Thanks again for the quick replies.
Roughly 13.5-14.5 at about 2500 rpm.
howie will be by with the exact numbers before you get to do the job.
Lambda sensor
is the O
2 sensor.
Quote from: ducpainter on June 27, 2010, 05:06:06 PM
Roughly 13.5-14.5 at about 2500 rpm.
howie will be by with the exact numbers before you get to do the job.
Lambda sensor is the O2 sensor.
Been here, different thread though.
http://ducatimonsterforum.org/index.php?topic=39970.msg712686#new (http://ducatimonsterforum.org/index.php?topic=39970.msg712686#new)
Quote from: RNRatchet on June 27, 2010, 05:03:01 PM
Thanks for the quick replies. I'm going to go and buy a cheap multimeter either tonight or tomorrow and check my actual voltages. I want about 13 volts while running right? Just a wild guess but my bike has a full Arrow system on it with a reprogrammed ecu so would that plug have been for the O2 sensor or something? Thanks again for the quick replies.
it could be. the 02 sensor has a disconnect in that area (this is fresh in my mind since i just plugged in a Fat Duc 02 manipulator today.)
Quote from: RNRatchet on June 27, 2010, 05:03:01 PM
Just a wild guess but my bike has a full Arrow system on it with a reprogrammed ecu so would that plug have been for the O2 sensor or something?
Full Arrow system shoudl have a bung in the header to accept the O2 sensor. Should see a wire coming out of it.
Ok, so I bought a multimeter and checked the battery while the bike was running, 12.1 volts, no change when revving. Then I unplugged the connector with the three yellow wires from the rectifier and checked each one of those. It didn't even register anything. I grounded the black probe on the engine case and placed the red probe in each of the three plugs and the meter didn't even flicker. Am I right to assume it's the stator then and not the rectifier? Oh and my pipes do have a bung but it is plugged, no O2 sensor. How hard of a job is it to replace the stator and where's a good place to get one?
Whoa there! Don't be so quick to diagnose a dead stator.
All three yellow wires from the stator float with respect to ground, so you're not going to measure anything from the stator wires to ground. Also, the yellow wires are an input to the rectifier, so you need to check the voltage on the other side - the side that goes to the engine.
Put your shiny new multimeter on "AC", and measure the three combinations between each of the stator wires. Ie, pick a pair of yellow wires, and measure the AC voltage from one to the other, and do that for all three combinations of yellow wires.
You should get >20 VAC at idle, and ~60V at ~3000rpm. If you don't, then check wiring to the stator before blaming the stator itself.
Quote from: suzyj on June 28, 2010, 05:25:47 PM
Whoa there! Don't be so quick to diagnose a dead stator.
All three yellow wires from the stator float with respect to ground, so you're not going to measure anything from the stator wires to ground. Also, the yellow wires are an input to the rectifier, so you need to check the voltage on the other side - the side that goes to the engine.
Put your shiny new multimeter on "AC", and measure the three combinations between each of the stator wires. Ie, pick a pair of yellow wires, and measure the AC voltage from one to the other, and do that for all three combinations of yellow wires.
You should get >20 VAC at idle, and ~60V at ~3000rpm. If you don't, then check wiring to the stator before blaming the stator itself.
You realize that if electricity would show itself before the smoke stage this would be much simpler. ;D
Quote from: howie on October 24, 2009, 05:58:39 PM
This is what I PMd alibaba:
Before we go any further, your bike is under warranty. Your role as the customer is to state your complaint and supply as much information as possible about the symptoms and conditions, ...actually even that is there responsibility to know what questions to ask. It is the dealer's job to do the diagnosis. If you tell them what to do and it doesn't work they can bill you for it. If you break or damage anything it is your responsibility. If you can not get satisfaction out of your dealer you need to go to another dealer, call DNA, or do both.
Anyway, to check stator output, follow the three yellow wires from the alternator. The wires will come out of the left side engine cover. You will come to a connector that leads to the regulator. Disconnect the connector. Each yellow wire is one phase of your 3 phase alternator. Connect the voltmeter, positive to each stator wire, negative to ground. You should get 27+10V at 2000 RPM and 78+V at 6000 RPM. If you are getting 14.5 volts +.5 to the battery at 3000RPM there is no need to perform this test. One test that is often overlooked by motorcycle shops is battery drain, or the more correct term, parasitic loss. This is what the bike uses when parked. Ducati has no spec for this. A good "anycar" spec would be less than 6 milliamps. My educated guess would less than 2 for your 696.
Hope this helps
Howie
Sorry, I came across this thread in an earlier post and I must have followed it wrong. So I unplug the connector and measure from yellow to yellow for all three wires coming out of the stator? Because measuring anything after the rectifier won't narrow it down between stator or rectifier right? Thanks again for all your help and patience [bow_down] I'm learning, I promise :) It's just the whole "old dog, new trick" theory being proven again.
Oh my, I thought the thread I linked you to had this link in it:
http://www.electrosport.com/technical-resources/library/diagnosis/fault-finding-guide.php (http://www.electrosport.com/technical-resources/library/diagnosis/fault-finding-guide.php)
I'm like you and looked towards the stator when I had my problem. Double checking the wires to the stator I found them to be fried and my rectifier dead.
Only option I'll suggest is that IF you need a new rectifier you could relocate it somewhere that gets maximum air flow. Knowing heat is the enemy for rectifiers I relocated mine to the frame under the headlight. I'll get you a picture of my setup when i can.
Ok, my stator is working just fine. I'm getting good voltage out of it, so it must be the rectifier. Wheres a good place to get one? Preferably a better quality one than the OEM.
Quote from: RNRatchet on June 29, 2010, 12:25:51 PM
Ok, my stator is working just fine. I'm getting good voltage out of it, so it must be the rectifier. Wheres a good place to get one? Preferably a better quality one than the OEM.
Electrex, the sight I sent you for diagnostics makes a regulator for your bike, available here (board sponsor [thumbsup]):
http://www.ca-cycleworks.com/shop/catalog/ducati/elec.html (http://www.ca-cycleworks.com/shop/catalog/ducati/elec.html)
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