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Thread: Indicator Won't turn Off

  1. #1
    JCS
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    Indicator Won't turn Off

    I have only been a member for a few months but have found this forum very informative. It appears that these bikes (don't all Italian made bikes) are plagued with elecrtical problems.

    I just picked up my 06 Tuono from getting it's 40,000km major service. Mechanically all is good but I'm having my 1st electrical issue and was wondering if anyone has experienced the same, and, is there a solution. Anyway for no apparent reason and without me touching the switch block, my left hand indicator comes on and stays on. I've done a few thousand kms on it without any problems but it started whilst at the shop and they have no solution.

  2. #2
    One Litre Duc Eater Paul D's Avatar
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    If 'the shop' is your bike garage, they should fix it, either free, or for a nominal charge. If they can't fix it, I wouldn't be very impressed with them!

    Not come across this problem before, but obviously the problem is limited to the left hand flasher.

    Does the handle bar switch feel like it's working right when you switch to right & left indicators, and press the cancel button?

    If not, you could take the handle bar unit apart and see if the mechanism has broken/stuck in left position. And maybe use WD40 to clean/lubricate.

    Then check wiring from switch to relay and see if it has shorted anywhere. An ohmmeter/multimeter would help.

    Also, swap out flasher unit under fairing with a known good unit.

    If you have a late Gen1, I have a spare handlebar switch unit for approx 25, but with postage may be cheaper to source locally.

  3. #3
    JCS
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    Hi Paul, thanks for the reply. Checked the switch block and it is fine and functions. The indicator just comes on by itself, sometimes goes out without touching the switch as well. Apparently the Tuonos don't have flasher units. I suspect the dash or other connections have moisture in them but the shop has spent 10 hours on it and cannot locate the source.

  4. #4
    One Litre Duc Eater Paul D's Avatar
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    Gen 1's have a flasher unit. Sounds like yours is an early Gen 2. Yep, damp (and sometimes...'too dry') dash can apparently cause all sorts of problems with lights and alarm etc, on a Gen2.

    Try drying dash and go from there...

  5. #5
    GP Champ Tifa's Avatar
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    Moisture in the dash.
    Open it up, dry it out.
    Vent it, re-fit.

  6. #6
    JCS
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    Thanks all. I'm hoping it is as simple as that. I did give it a good wash about a week ago and being the middle of winter in my part of he world it might just be a moisture problem. Sounds like no others have suffered the same issues so perhaps it's not an inherant problem like the fogging dash is. I'll let lyou know how I get on.

    Do he V4'S have better electrics or are they all the same?

  7. #7
    JCS
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    Well I pulled the dash completely apart anticipating moisture, or at least evidence of it but nothing...... The board behind the dash looked as good as new with absolutely no calcium deposits, no rust, no moisture, nothin.

    Pulled the switch block apart and the same story.

    Back to square 1

  8. #8
    One Litre Duc Eater Paul D's Avatar
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    Hmmm. If there's no fault in the wiring, which can be determined by ohm'ing out the wires, then it must be the control unit faulty.

    Any way you can find a temporary dash to swap out with?

    PS: your not alone!
    confusion rules !!

  9. #9
    JCS
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    Found the fault. When it was being serviced the mechanic didn't reconnect the headlight connector properly. Indicators are connected to these and for whatever reason they need to be properly connected or else this problem arises.

  10. #10
    One Litre Duc Eater
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    ahaa nice to get to the bottom of an electrical issue , we can all learn from this . good call to keep us updated .

  11. #11
    One Litre Duc Eater Paul D's Avatar
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    Great to know! Thanks for the update.

    Had similar issues with caravan rear lights. A bad earth can cause current to run through 'other' lighting due to lower resistance, resulting in lights being on that shouldn't! Or, it could just be headlight feed rerouted into indicator circuit.

    But... the garage mechanic should have caught on when he reconnected the headlight and noticed the indicator then stayed on!!

  12. #12
    One Litre Duc Eater
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    Ought to tell the garage !

  13. #13
    Evil Twin hs2300's Avatar
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    Is it fitted with an alarm system that uses the flashers

  14. #14
    Baby Twin
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    So the shop spent ten hours on it and couldn't find the problem they created by simply not reconnecting headlight properly. Hmm. I wouldn't be using them again in a hurry.

    Sent from my D5803 using Tapatalk

  15. #15
    JCS
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    Yes, no faith in that workshop. Unfortunately there are no shops really familiar with Aprilias for about 300km. Hopefully all its issues are behind us now and happy to say I've done another few thousand kilometres with no further problems.

    Thanks to everyone for your comments.

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