Help - Bike will turn off in the middle and wont start..Immobilizer?Ecu? Fuel/??

[dkramp]

bike is running off the battery partially til it dies.
then it gets some of its power back as it's a decent battery.

had a car have the same issue.
eventually it killed the battery then another before the shop figured it was a bad alternator.

Got you  - that makes sense, thank you.
Now how could I test it to confirm - measure the battery when it happens?? or any other way?

PS. Just for the record guys,  I am pretty handy with electronics and stuff, plus spend 3 years in the army as a tank commander so I could pretty much take it apart and put back together, but pretty new to bikes ( just have it less than a year) - so excuse me if I sometimes ask questions that might seem obvious to you .

[ducpainter]

Got you  - that makes sense, thank you.
Now how could I test it to confirm - measure the battery when it happens?? or any other way?

PS. Just for the record guys,  I am pretty handy with electronics and stuff, plus spend 3 years in the army as a tank commander so I could pretty much take it apart and put back together, but pretty new to bikes ( just have it less than a year) - so excuse me if I sometimes ask questions that might seem obvious to you .

When it died the first time, and your tech disabled the ecu...

was the battery low? Did he check it, or charge it?

bike is running off the battery partially til it dies.
then it gets some of its power back as it's a decent battery.

had a car have the same issue.
eventually it killed the battery then another before the shop figured it was a bad alternator.

I don't think a moto battery, even in good condition, would last that long if it wasn't charging based on the electrical demands of a FI bike plus the starting draw.

I might be wrong. I suppose it might be charging just enough to make it last a while.

[Raux]

When it died the first time, and your tech disabled the ecu...

was the battery low? Did he check it, or charge it?
I don't think a moto battery, even in good condition, would last that long if it wasn't charging based on the electrical demands of a FI bike plus the starting draw.

I might be wrong. I suppose it might be charging just enough to make it last a while.

if you have low output instead of no output from your alt...

[ducpainter]

if you have low output instead of no output from your alt...

Possible...

the immobilizer issue could have been triggered by whatever failed I suppose too.

I know the ecu in my 996 didn't like reverse polarity.

[dkramp]

SO here you go guys - still havent resolved the issue but now I made a video last time it happened..Ducati Monster starting issue

Please help!

[Howie]

Got a meter?  First place to start is checking the charging system.

http://www.electrosport.com/technical-resources/diagnosis-center/fault-finding-guide

The first click you are hearing is the solenoid. 

[dkramp]

Thanks ! I will go over the chart now but, yesterday when it happened I checked the battery it was 12.8 or something like that.

[dkramp]

also did you see that the ECU light is not turning off?

[dkramp]

Hmm based on the chart - the charging system is perfectly OK...
Now what? Any ideas?

[Howie]

High resistance in a connection.  You can spot this by testing for voltage drop at each connection to pin point the problem, but you would need to test when the problem happens or all will test good.  In your case, it is probably easier to just disassemble, clean and reassemble.  Most likely are the battery terminals.  Disconnect negative first, connect negative last.  Don't forget the engine ground.  The lug on the starter is fragile, use caution or leave it alone.  Just to be sure, get the battery load tested too.

[sr79labrat]

That bike cranks so I would check the air, fuel, spark, and compression. Probably the spark and fuel to see if that is what it isnt getting since the cranking seems like it has compression. Unless the intake is plugged otherwise that is probably fine also. So check those two and see what you arnt getting. I assume you know how to do that being the above mentioned in this post. You said the pump sounds like it is priming so it is probably spark. I would still check to see if it pumps it out proudly just to verify some good pressure. I would check spark, and if you arent getting any then I would guess it could be part of the immobilizer system. Im not sure how it disables the engine though since I am new to this issue myself.   

Maybe you guys can help me with mine while we hash this out as well.
My bike has a different issue currently. I had lost the keys like an idiot. I ordered the full set via ebay as well. It was off of a wrecked bike, and once I tossed it in it worked at first that night. Tried starting it 3-4 times and sounded good. Reved up ok and had no issues whatsoever. So at first I thought I had a battery-charging issue once I headed to work the next day. Bike started out great, but seemed to stall out. I was thinking I had this same issue with a bad battery, or alternator. So I decided to not leave it at work and brought it back to the house last night via tow. So today I pulled everything apart and looked at it. My first suspect was the gauges...they were pretty nasty and corroded as mentioned in this post. That was on the circuit board and motor looking portion-servo for the tach. I sprayed them down with carb cleaner and wiped them off with a paper towel. Plugged them in after drying off and it fires right up. I never had cranking like the video in this post. My issue is now how to swap the servo/ digital read out/ face of the gauges. hmmm Anyone ever do this? I dont know how to pull the needles or the little prongs on the back. Right now Im guessing its a chop and soldier plan???

THanks and hoping to help out also!
Kyle

[dkramp]

Hey Kyle
The bike cranks because my mechanic by-passed the immobilizer, before the bike wouldn't start at all.
Anyway now I put the immobilizer back and cleaned everything possible connection and the issue disappeared for now. But  I'm sure with the first rain it will be back