Throttle by wire issue
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#33
RE: Throttle by wire issue
ORIGINAL: frog13
Try page 4-17. Kill switch to run, ignition on and off four times, 3 seconds in between each time, but I heard they are recommending ten seconds. Don't sa nothin' about the throttle opening and closing.
ORIGINAL: DaveMK
XTrooper, What page is that on?
ORIGINAL: XTrooper3936
The procedure I read calls for turning the kill switch to on and then turning the ignition switch to on for four seconds (now changed to ten seconds) and then off again. This is to be done four times. This is straight from my '08 Touring Model Service Manual.
What is the source of your information?
The procedure I read calls for turning the kill switch to on and then turning the ignition switch to on for four seconds (now changed to ten seconds) and then off again. This is to be done four times. This is straight from my '08 Touring Model Service Manual.
What is the source of your information?
FWIW, I can testify to the fact that this phenomenon does exist because it happened to me and it didn't involve me shutting down or starting the bike. A few weekends ago, I had just finished traveling about 100 miles on I-81 (the bike was idling normally before I got on the Interstate). When I pulled up to the stop sign at the end of the exit ramp, the motor was idling at ~1800 rpm! I could lower it temporarily by turning the throttle past the "zero" position, but it wouldn't hold. After clearing the intersection, I pulled into a gas station and turned the bike off, but when I fired it back up, the idle jumped back up to 1800 rpm again. I then conducted the idle reset procedure as described above (which I luckily remembered) and that brought the idle back to normal.
So the "crazy idle syndrome" is real and its cause isn't necessarily the fault of the operator. I'm guessing it's a bug in the ECM, i.e., a software problem.
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#37
RE: Throttle by wire issue
I think the dealers are fudging this issue a little bit. I don't think the throttle position when shutting down has anything to do with this. I tried to make mine do it and it won't happen.
According to the book. When the ingintion is turned on, the Throttlehomes to the "limp home postition" from thereit tries to close to 0. If the throttlecan't close orthe TGS readings are higher than expected at 0 throttle, the ECU reverts to"limp home". If all is well the the0 throttle position isstored.This has to fail on 4 consecutive ignition cycles forthe ECU to throw a code.
I take all this to mean, that it is not learning a new idle at shut down. Rather it is failing the 0 throttle position is within range during startup. From there the ECU is intentionally putting the bike in "Limp Home"
The book fix for this with or without the code is to replace the induction module.
ReferenceElectrical Manual page 4-200 DTCP2176.
According to the book. When the ingintion is turned on, the Throttlehomes to the "limp home postition" from thereit tries to close to 0. If the throttlecan't close orthe TGS readings are higher than expected at 0 throttle, the ECU reverts to"limp home". If all is well the the0 throttle position isstored.This has to fail on 4 consecutive ignition cycles forthe ECU to throw a code.
I take all this to mean, that it is not learning a new idle at shut down. Rather it is failing the 0 throttle position is within range during startup. From there the ECU is intentionally putting the bike in "Limp Home"
The book fix for this with or without the code is to replace the induction module.
ReferenceElectrical Manual page 4-200 DTCP2176.
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