Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Technical Zone
  3. Electrics
  4. DT125X Servo doesnt move

DT125X Servo doesnt move

Scheduled Pinned Locked Moved Electrics
12 Posts 2 Posters 6.7k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • CalumC Offline
    CalumC Offline
    Calum
    wrote on last edited by
    #2

    Hello,

    I'll have a think amd get back to you mate. These servos are common to come by and it won't be anything too technical. Give me a few days and I'll come up with a few tests you can do.

    In the mean time feel free to get some photos of your bike up and welcome along.

    Always Originate, Never Pirate!

    1 Reply Last reply
    0
    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #3

      By the sounds of things the CDI could be the fault. On the later dtx models the YPVS is run off the cdi. Before ruling that out though I would just put 12V's across the unit just to make sure it definitely works. I would also test continuity through the cables that go from the cdi to the servo.

      If the powervalve gets clogged up with dirty smoker juices, it can stop the YPVS from.rotating. Examine the condition of the powervalve and clean where necessary.

      I'll come.back with some.more ideas when I think of them.

      Always Originate, Never Pirate!

      1 Reply Last reply
      0
      • LJK_hunterL Offline
        LJK_hunterL Offline
        LJK_hunter
        wrote on last edited by
        #4

        Do you know which colour wires are the positive and negative on the servo so that i can test it off of the battery? I Used a multi meter on each pin from the CDI that goes to the servo and there's only one that gets any voltage at all and its only about 3 volts for less than a second. So i think it is The CDI that is faulty. 😞

        1 Reply Last reply
        0
        • CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #5

          Possibly. Possibly not. Either way those cdi's are not expensive.

          Won't matter on the servo mate. Positive will spin it one direction and negative will spin it another I imagine.

          Always Originate, Never Pirate!

          1 Reply Last reply
          0
          • LJK_hunterL Offline
            LJK_hunterL Offline
            LJK_hunter
            wrote on last edited by
            #6

            i just tested both my servos off the battery and both of them spin, Which means i bought a servo i didnt need ahah

            Thanks for the help by the way 🙂

            1 Reply Last reply
            0
            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #7

              Cool. So the servos are fine which means something else is wrong.

              Always Originate, Never Pirate!

              1 Reply Last reply
              0
              • CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #8

                Any updates?

                Get your hands on another cdi and see if that's the issue. If you've tested all the wiring I can't think what else might cause it. I would have thought if it were the cdi then some othee things might not run.

                Maybe there is a relay somewhere but I'm not convinced

                Always Originate, Never Pirate!

                1 Reply Last reply
                0
                • LJK_hunterL Offline
                  LJK_hunterL Offline
                  LJK_hunter
                  wrote on last edited by
                  #9

                  I haven't made any more progress yet but it seems the only way im going to get any closer to solving it will be to get another CDI, i did find a listing of someone selling a CDI With a fault of the YPVS not working but the bike still running, so it seems that they can go wrong on just servo controller.

                  1 Reply Last reply
                  0
                  • CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #10

                    I can't remember off yhe top of my head. But I almost feel like the older dtrs had a separate powervalve unit. Can't remember. As foe yours though. It wouldn't surprise me if its the cdi

                    Always Originate, Never Pirate!

                    1 Reply Last reply
                    0
                    • LJK_hunterL Offline
                      LJK_hunterL Offline
                      LJK_hunter
                      wrote on last edited by
                      #11

                      Okay, I can finally say that the problem is solved!!! Bought a CDI off eBay for £30 recieved it today, fitted it and now the servo turns as its supposed to when the ignition is turned. It will be good to finally have some low down power.

                      Now to move on tuning it for the New exhaust.

                      1 Reply Last reply
                      0
                      • CalumC Offline
                        CalumC Offline
                        Calum
                        wrote on last edited by
                        #12

                        Good news matey 😄

                        Always Originate, Never Pirate!

                        1 Reply Last reply
                        0
                        Reply
                        • Reply as topic
                        Log in to reply
                        • Oldest to Newest
                        • Newest to Oldest
                        • Most Votes


                        • Login

                        • Don't have an account? Register

                        • Login or register to search.
                        • First post
                          Last post
                        0
                        • Recent
                        • Tags
                        • Popular
                        • Users
                        • Groups