990 ABS Light Stuck On

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by loeky, Jan 28, 2010.

  1. loeky

    loeky Been here awhile

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    Came up with a problem after taking off my front wheel to have a tire swapped out. The ABS warning light now stays on, even when restarting the bike multiple times. I've checked that everything is aligned and straight/true after remounting the wheel and it would all appear as normal.

    Otherwise, bike drives normally and such. Checked the rear sensor as well and appears to be in order and fine.

    Searched here and with Google, and seems like very few if any hits for this symptom. Is there a simple 'reset' that I'm not aware of....?

    Any help is appreciated.
    #1
  2. Pax

    Pax shazam.

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    Looking at the obvious first...was the wheel reversed when the new tire was placed on it?

    #2
  3. ganshert

    ganshert not sleeping

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    good call :thumb
    #3
  4. loeky

    loeky Been here awhile

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    The ABS sensor aligns with the grating on the wheel. It sounds though that the wheel itself is directional, which I didn't realize and couldn't tell.

    Will rotate the wheel around and see if that fixes it.... and then go back to the shop to have the tire put on correctly. Will have to inspect though as I could see any directional difference in the wheel mechanism.
    #4
  5. evoluzione

    evoluzione Been here awhile

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    if the sensor ring is on the left side (as you sit on the bike) then the wheel is on correctly. check that the sensor tip does not have any metal "bits" stuck to it. also, if the wheel spacers were not fully seated then the ring might be just far enough away from the sensor to not work properly.

    hope this helps.
    #5
  6. Pax

    Pax shazam.

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    That's correct Loeky. I almost went mad trying to figure this issue out on my 990 last summer and found it in 2 minutes at the shop. Duh.

    Evoluzione brings up a good point. Clean everything up carefully and fiddle with the alignment a bit. The sensor can get knocked out of place.

    Regarding tires, always install tires as designed (directionally). It is a simple mistake to fix if this is what happened.

    Report back and let us know how it goes. :thumb

    -Pax

    #6
  7. loeky

    loeky Been here awhile

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    - Wheel is on correctly based on sensor ring being on the left side.
    - Removed the sensor itself this AM to make sure it was clean and appears to be, with no visible gunk/dirt.
    - Wheel spins true and bearings and spacers are inserted as they were before wheel was removed.

    Sucks, but looks like I need to swing by the shop tomorrow to have someone take a peek at it. Kinda bummed that a simple wheel change would throw off the ABS - unless I'm an idiot and overlooked something else entirely.

    Thanks for the responses!
    #7
  8. Pax

    Pax shazam.

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    It is probably something simple, but that doesn't make you an idiot. Keep at it and get it fixed! Your bike should be returned to you in working order and that is a reasonable expectation.

    Swing by the shop, shrug, point at the bike and say, "Gosh guys, what'd you do?" :D

    -Pax

    #8
  9. alphajory

    alphajory Been here awhile

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    just make a quick check and see that you have spacer in correctly and that you haven't reversed them. this will change the distance from the sensor and it will not work.
    #9
  10. Just Paul

    Just Paul Pro Cat Herder

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    #10
  11. loeky

    loeky Been here awhile

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    For ongoing future reference:

    - Combined knowledge of the knuckleheads at the tech day today couldn't help to diagnose the ABS light problem...

    - To their credit and only after taking the bike to Scuderia - error codes were found to have been thrown when tied up to the computer. After being cleared, reset and then redriven the codes would return. The 2 ABS error codes are:

    5021 ECU Malfunction
    5014 Valve Relay Malfunction

    These have been forwarded to KTM for their advice as the mechanics haven't seen this sort of problem and are calling it an electrical gremlin of some sort.

    It'll be next week before any more progress is made by talking to KTM directly. It could be anything to a shorting wire in the harness somewhere to who knows what else....

    The dollar signs are starting to spin and am hopeful a quick answer is possible. Sharing this here in case it helps someone else and will post my results when/if I get one.
    #11
  12. DSM8

    DSM8 Where fun goes to die....

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    I have the complete ABS pump assembly out of my bike sitting in a box, PM me if you end up needing one.
    #12
  13. Katoom119

    Katoom119 Mmmm....Orange Kool-aid

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    Yeah, whatever you do don't buy anything related to the ABS from the dealer. I'm like DSM8, I've got pump assembly, the wires, sensors, whole 9 yards. If DSM8 doesn't have something you need PM me.
    #13
  14. loeky

    loeky Been here awhile

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    Thanks for the offers dudes. I will surely reach out when I know more.
    #14
  15. HeatXfer

    HeatXfer Bad knees

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    3 1/2yr old thread - anybody know what the answer was?
    #15
  16. ZAR002

    ZAR002 n00b

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    i'm having the same problem but just after a small shower...did someone ended up to understand what was the problem? Cheers
    #16
  17. Dumbass

    Dumbass n00b

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    hi guys, having same problem. know its a 6 year old post, but you never know.
    #17
  18. loeky

    loeky Been here awhile

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    HEY! I just happened on this old post of mine randomly today and saw your ask - apologies for not bookmarking this to follow up.

    LOOOoooong story short, KTM didn't help with the issue. I was apparently the only one at the time to experience it..

    What did I do? I got extremely frustrated KTM's delay around the issue and bought an ABS from another inmate from a part out. Had it installed professionally by Scuderia here in SF, which solved the issue and tested fine.

    My frustration won and ended up selling that baddie off, which I regretted.

    .. Until I picked up a 990 SMR a couple months ago :D

    If you're struggling with the issue, find a replacement and toss it in. I didn't get the sense from Scuderia or otherwise that there was a different solve. Hindsight, I should have kept the bike as it was great otherwise and the next guy got a really great deal on a well sorted bike.
    #18
  19. loeky

    loeky Been here awhile

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    #19
  20. Dumbass

    Dumbass n00b

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    HI guys

    Had the same problem with ABS. tried everything possible, by chance tested power regulator.
    When she idles for 3 - 5 mins you can see a increase in volts with digital multi meter R150 at hardware store (probably 15 usd).
    he voltage fluctuated between 10 & 18 vdc.
    had it replaced at KTM for R4500 (450usd). been sorted since.

    good luck boys and safe riding
    #20