1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Solved: Sf848 Dqs Not Working

Discussion in 'Streetfighter' started by LtGoose, Jul 29, 2018.

  1. Hi all,

    I recently bought the Ducati quick shifter for the SF and I'm having a few issues with it (actually, it's not working at all).

    When I went to install I noticed that the plug from the loom had been cut and reattached via some bullet plug/crimp connectors... I've reattached the plug securely with the correct polarity, so I'm sure its not the connection.

    Otherwise the install was completed as per the included Ducati instructions. DQS is switched on but no matter the force I put into the shifter, it will not shift up until I unload the engine.

    Last year I fitted a DP ECU and used JPDIAG to reset the TPS sensor, so maybe it's an ECU issue?

    Or maybe by cutting and reattaching the plug it's somehow messed with the system?

    Any suggestions? I'm at a loss here!

    Thanks
     
    #1 LtGoose, Jul 29, 2018
  2. What is the map ref in your ECU? JPDiag will tell you this. Use the copy function and paste info here.
     
    #2 chrisw, Jul 29, 2018
  3. The bike and I are separated from the laptop with JPDIAG by about 1500km :D

    Will be a number of weeks before I can get them together again, but I'll post it here when I'm done
     
    #3 LtGoose, Jul 29, 2018
  4. The QS is in effect a pressure switch. It will either be normally open or normally closed. You should be able to use a multi-meter to check continuity.
     
    #4 chrisw, Jul 29, 2018
    • Useful Useful x 1
  5. Cheers mate, I'll give that a go first :upyeah:
     
    #5 LtGoose, Jul 29, 2018

  6. OK so I checked this today. The QS unit is fine, works as it should... However, I find it difficult to get any reading from the loom side - even before the cut. Not too sure what else to do!
     
    #6 LtGoose, Jul 30, 2018
  7. From the map ref I can check if DQS is enabled in the ECU.
     
    #7 chrisw, Jul 30, 2018
  8. Check for +5V on the loom side (pins) with ignition on and Q/S enabled.
     
    #8 Rman, Jul 30, 2018
  9. Thanks. I'll post it here when I can. If the option for selecting DQS is available on the dash, shouldn't that mean that it's enabled in the ECU?



    Will check tomorrow. Thanks
     
    #9 LtGoose, Jul 30, 2018
  10. The DQS active in the dash should mean that the DQS is active in the ECU. The SF differs from other bikes using DQS in that it was already active on later bikes whereas the likes of the 848 1198 SBK needed a map reflash for it to be activated.
     
    #10 chrisw, Jul 30, 2018
  11. 1DD24124-E3E8-4F53-ACDF-3F6CFFDC8E02.jpeg Sorry for late reply. I’ve only just got around to connecting the laptop to the bike - here’s what I found:
     
    #11 LtGoose, Dec 10, 2018
  12. For any of you researching because of similar problems - I've now solved it!

    The issue was with the clutch switch. It was stuck permanently engaged (for probably 2 years at minimum!) Thankfully I never attempted to start it in gear. I freed it off, et voila, problem solved!
     
    #12 LtGoose, Jul 19, 2019
    • Like Like x 1
(You must log in or sign up to post here.)
Do Not Sell My Personal Information