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Volts going to coils

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  • Volts going to coils

    The gray wire isn't putting out the same volts as the orange. It wasn't putting out enough to fire for a while(1-2volts)
    It eventually made its way to 6-7 volts where it can fire. Then eventually went to 10 volts. The orange has 11 but when the gray had 6 the orange had 8. It maintained that kind of difference while climbing to what it is now.

    Can some one who's bike fires great check the volts coming from the ignition control unit gray and orange wires on the end?

    Any ideas? Think I need a new ICU?

    Thanks
    David

  • #2
    I think the manual says...with key on and testing at unit terminals orange should be 12 volts and gray should be 12 volts.
    Ernie
    79XS1100SF (no longer naked, now a bagger)
    (Improving with age, the bike that is)

    Comment


    • #3
      DavesXS:

      As egsols said 12V on both. I read you the manual:

      Remove the seat
      Turn the ignition switch to "ON"
      Check for the voltage at the unit terminals. Use a pocket tester with DC 20V scale
      Grey to ground - 12volts
      White/Red to ground - 12volts
      Black/White to ground - 6volts
      Orange to ground - 12volts
      Red/White to ground - 12volts

      Comment


      • #4
        Thanks guys. I'm going to check all the wires now. I hope its the feed going in thats low from a bad connection or something.

        But Ignition on the gray wire only gives 5-6 volts. Then I crank it and it drops to 1-2 and hard to start. Once started it climbs back up to 9-10 volts.

        Comment


        • #5
          Remove the seat

          lol, sorry but that reminded of a post where someone was asking about the difference between clymers and haynes. It was said that clymers sometimes oversimplifies things. "remove the seat" lol
          Ernie
          79XS1100SF (no longer naked, now a bagger)
          (Improving with age, the bike that is)

          Comment


          • #6
            Here is what its supposed to be doing and what it's actually doing both iggy on not running and while running

            Only thing right is the 6 volt line


            Grey to ground - 12volts - actual= 5-6 off, 9-10 running
            White/Red to ground - 12volts -actual= 10 off, 12 running
            Black/White to ground - 6volts - actual=6
            Orange to ground - 12volts - actual= 5-6 off, and 9-10 running
            Red/White to ground - 12volts - actual= 5 off, 9 running

            Comment


            • #7
              Dave - I hope it isn't your TCI causing the problem. Randy Rago's website has the info with a video on how to test it. Click on 'XS TCI Repairs' to get at it.
              I think I have a loose screw behind the handlebars.

              '79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines

              Comment


              • #8
                Originally posted by dbeardslee
                Dave - I hope it isn't your TCI causing the problem. Randy Rago's website has the info with a video on how to test it. Click on 'XS TCI Repairs' to get at it.
                Thanks

                TCI checks out ok.

                Guess I need an ignition module too bad theres no upgrade or new model

                Comment


                • #9
                  Dave,

                  Your TCI checks out OK? And you need an ignition module?

                  They are one and the same, TCI and ignition module.

                  Have you done the solder fix? Have you cleaned the connections at the coils, resistor, etc.?

                  Comment


                  • #10
                    I haven't delved much into the iggy system so treat the following with a grain of salt.

                    Have you checked the ballist resistor?
                    Ernie
                    79XS1100SF (no longer naked, now a bagger)
                    (Improving with age, the bike that is)

                    Comment


                    • #11
                      Originally posted by randy
                      Dave,

                      Your TCI checks out OK? And you need an ignition module?

                      They are one and the same, TCI and ignition module.

                      Have you done the solder fix? Have you cleaned the connections at the coils, resistor, etc.?
                      Ok now this is gonna piss me off...

                      I am posting several posts about me checking the wires on the ignition module, and posted the results. Then some one come in here and says " I hope its not your TCI. And directs me to a link on how to check the TCI.

                      If they are one in the same, and I had already posted the results of the testing, why would some one come in here and suggest TCI as if its something other than what I was already testing, and questioning? Making me look stupid, and throwing me a curve ball like that?
                      --------------------------------------------------

                      That said...

                      Yes I have cleaned connections.
                      Resistor?

                      Comment


                      • #12
                        Dave,

                        None of us would waste your time or ours just to confuse and piss you off.

                        If the advice here pisses you off, you can go elsewhere for help.

                        Comment


                        • #13
                          Main power in is 13 while running. coil signals are putting out 10 on both now.

                          And volts decrease on the signal wires as I rev it up. Main power stays at 13.

                          Comment


                          • #14
                            Dave - The beginning of this thread didn't say anything about you testing the TCI. Sorry if it caused confusion, but assuming everyone has read all threads doesn't generally work. The reason I said check your TCI is because that's what feeds the orange and grey wires. That having been said, you might check your pickup coil gaps. Might be a little wider on one side than the other, which I suppose could cause the difference in voltage. Randy be the ignition guy, so maybe he could render an opinion on where to look.
                            I think I have a loose screw behind the handlebars.

                            '79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines

                            Comment


                            • #15
                              Originally posted by randy
                              Dave,

                              None of us would waste your time or ours just to confuse and piss you off.
                              Well regardless, it was done. The other guy threw me a curve(after I'd posted test results on the ignition module) and tell me to check the TCI?
                              I had already checked it and posted results. Why call it a different name and tell me to check it if I already had checked it and posted results?

                              Cann't spell it out any better for you.
                              Then you see my post and call me on it and so I look the fool not knowing I'd already checked it because its the same friggin thing!!!

                              Others are attempting to help and greatly appreciated, but theres really no need to make me check the same thing I already check by calling it something else.

                              And dunno whats your problem because it was directed at the one who threw me a curve, because it made me look foolish to you.

                              But don't tell me "none of us" because intentional or not, one of you did.

                              Comment

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