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GS1000S self cancelling indicators not working

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    GS1000S self cancelling indicators not working

    Good afternoon all,
    The self cancelling function on my indicators has stopped working.
    It has worked intermittently in the past but has now stopped altogether.
    The indicators still function but require a manual stop (if that makes sense).
    I have cleaned the contacts in the wiring blocks but still no joy.
    If anyone has any suggestions on please or a replacement box to try/ buy?
    The boxes are available new on the cmsnl website but at 500 plus euros, plus p&p and then UK VAT (20%) and delivery company handling fee they are out of my reach.
    Thank you in advance for any help.
    David

    #2
    The turn signal control mechanism is drastically different between the 1979 and 1980 model year. Which do you have? If the later you have a good chance if purchasing a used turn signal control module, which is shared with other models. These units are reasonably reliable. Buy used after confirming with the seller that you will get a refund if inop. If the 1979 model, that's a much bigger problem. That system pretty much sucked, which is why Suzuki fixed it in 1980. The system can be converted to full manual following guides in older threads here. Otherwise, I fear your options are to spend the money on a new module or gamble on purchasing a used one (which is unlikely to work properly.)
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment


      #3
      It's a 1979 model I'm afraid.
      The units don't appear on sale often (even on the dreaded flea).
      No way am I coughing up what's being asked for a new unit. Guess I'll just have to stick with manual cancelling. A shame as it was quite useful at times.

      Comment


        #4
        Originally posted by finchy4 View Post
        It's a 1979 model I'm afraid.
        The units don't appear on sale often (even on the dreaded flea).
        No way am I coughing up what's being asked for a new unit. Guess I'll just have to stick with manual cancelling. A shame as it was quite useful at times.
        Consider yourself lucky if the only problem with your signals is the fact that they don't auto cancel. With that older system when the TSCU fails it wipes out all turnsignal operation.
        Ed

        To measure is to know.

        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

        Comment


          #5
          Should that happen is there a simple (?) fix. I'd hate to be minus any indicators.

          Comment


            #6
            If that happens search the forum for mods as a workaround. I'm not an expert on the subject but have seen the threads detailing what to do.
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment


              #7
              Often the reason why the auto cancel fails is that the module is replaced upside down and it fills with water (there is an indication arrow)
              My brother has an immaculate S that he has never ridden and recently had the exact same issue. Apparently, there are two relays inside, I forget what he said whether one is a latching and the other Left/right or whether it was one relay left and the other right, anyway in this case it was these two relays that needed replacing or cleaning up, again I forget which.
              sigpic

              Don't say can't, as anything is possible with time and effort, but, if you don't have time things get tougher and require more effort.

              Comment


                #8
                Thank you for that information. Recently had a ride home in torrential rain. I'll pull the unit tomorrow and get it inside.
                Do you happen to know if the relays are easily accessible or I'm looking at a full strip down?

                Comment


                  #9
                  Originally posted by finchy4 View Post
                  Thank you for that information. Recently had a ride home in torrential rain. I'll pull the unit tomorrow and get it inside.
                  Do you happen to know if the relays are easily accessible or I'm looking at a full strip down?
                  No, easy to get to. 1st picture shows the issue cause, he cleaned up the original relays, he said he didn't have anything with the original footprint, anyway it all works tickety boo now.
                  I forgot to ask if they were one relay each side for indication. It makes sense that it ould be one left and one right as the relay would be the latch until the speedo sensor counted down.









                  sigpic

                  Don't say can't, as anything is possible with time and effort, but, if you don't have time things get tougher and require more effort.

                  Comment


                    #10
                    Thank you, these are a great help.
                    I will pull mine as soon as I can get out to the garage and see if it is salvageable.
                    Please thank your brother for me to. I certainly appreciate the photos of the internals.
                    David

                    Comment


                      #11
                      UPDATE
                      I've had the chance now to check the box.
                      It was mounted the right way up and easy to get to.
                      Opened it up and absolutely no sign of corrosion at all.
                      Gave it a quick blast of contact cleaner (just in case) let it dry and reassembled and replaced it.
                      Still allows the use of the indicators but the timer/self cancelling function still not working. I must admit I haven't tried it out on the road as it's currently persisting down.
                      Should I try anything else, obtain an expensive replacement or just use it as it is?
                      Thank you again in advance for any help or tips.
                      David

                      Comment


                        #12
                        The self cancelling won't work standing, the speedometer cable has to be turning.
                        sigpic

                        Don't say can't, as anything is possible with time and effort, but, if you don't have time things get tougher and require more effort.

                        Comment


                          #13
                          Yep, Suzuki had a kind'f speed + time system. the front wheel, speedo, had to be going something like 15mph for 15 sec. to turn the signals off, less than 15mph, they would never turn off.
                          1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

                          Comment


                            #14
                            Update- thank you for the comments. Unfortunately due to the scaffolders limiting access to the garage, I can't get the bike out to test it ☹️
                            I'll update properly once the "gentlemen" have removed the offending pipework in a couple of weeks.

                            Comment


                              #15
                              There is a reed switch in the back of the speedo switched by the rotating magnet that drives the speedo needle. The number of pulses is a certain time determine if the cancelling is due to time or distance.

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