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Speedometer and RPM does not work

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  • Speedometer and RPM does not work

    Hi Guys
    They dont work after installing MAXXecu , how do i keep the speedometer and rpm functional with standalone ECU ?

    Best Regards

  • #2
    Have you set it Up correctly in the software? Pnp?
    1995 Audi S6 - AAN (~350hp)
    2008 BMW 530xd (235hp)
    2008 Hyundai i30 - 1.6 CRDI (89hp)
    2011 KTM 990 SMR - custom tuned (120whp)

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    • #3
      Its not plug and play ,, its only MAXXECU. How does it work , the speedometer and rpm ? What does it read from original ?

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      • #4
        VSS you set up as a low side DIN input.
        Tacho is driven from a GPO
        Panthero Coupé quattro 20vt
        Indigo ABY coupé
        Imola B6 S4 Avant

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        • #5
          Update ,, the speedometer works on the dashboard on the car , but not the RPM . There is a sensor mounted on the flywheel so i guess that there is where the RP comes to the RPM gauge on the dashboard ? Correct ? Or where doea the RPM come from on the dashboard ?
          Best Regards

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          • #6
            The tachometer on the dashboard reads from what ?

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            • #7
              It is supplied the signal from the ECU. On MaxxECU this is normally GPO8 which is capable of 12v PWM - with S2 this is simple 12v pulse with 50% duty cycle
              Panthero Coupé quattro 20vt
              Indigo ABY coupé
              Imola B6 S4 Avant

              Comment


              • #8
                Originally posted by Error404 View Post
                It is supplied the signal from the ECU. On MaxxECU this is normally GPO8 which is capable of 12v PWM - with S2 this is simple 12v pulse with 50% duty cycle
                I have problem aswell, don’t remember if i had it before my Maxxecu. But my rpm needle is erratic and sluggish. I watched the output data and the tachoaoutput flickers from 0 to 100%. Is that normal Alex?

                the values are correct so where to look? Bad cables in the car or bad leads/components in the actual tachometer?

                cheers

                1995 Audi S6 - AAN (~350hp)
                2008 BMW 530xd (235hp)
                2008 Hyundai i30 - 1.6 CRDI (89hp)
                2011 KTM 990 SMR - custom tuned (120whp)

                Comment


                • #9
                  I would first check the long contact pins in the instrument cluster - you know the ones which connect to the circuit board? They can get a little oxidised and cause problems with instruments and Autocheck
                  Panthero Coupé quattro 20vt
                  Indigo ABY coupé
                  Imola B6 S4 Avant

                  Comment


                  • #10
                    Allright, the green contact is for the tacho and pin 12 is for the rpm signal from what ive read. Have sprayed every socket i can find on the harness with oxidcleaner and cleaner plus air to have all cleaned. No luck ?

                    Have checked all the splices in connection bay area around passenger kickpanel with no luck. Maybe i have missed something. Everything else works fine. The only thing i have found is two kinks on the engine harness (rpm g22? Splice) the black cable has two vite marks in it so you can see the wiring.

                    you don’t do a engine harness for my var Alex ?
                    1995 Audi S6 - AAN (~350hp)
                    2008 BMW 530xd (235hp)
                    2008 Hyundai i30 - 1.6 CRDI (89hp)
                    2011 KTM 990 SMR - custom tuned (120whp)

                    Comment


                    • #11

                      I should be able to just connect GPO8 to to the speedometer .. correct ?
                      But on what PIN on the speedometer ?
                      Where can i find the schmatics for the speedometer ?

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                      • #12
                        Originally posted by S2_avant 19930325 View Post
                        I should be able to just connect GPO8 to to the speedometer .. correct ?
                        But on what PIN on the speedometer ?
                        Where can i find the schmatics for the speedometer ?
                        All on S2Central

                        http://www.s2central.com

                        http://www.s2central.com/S2_Schematics/B/B73-07.pdf

                        S2 Coupe 3B Project


                        Ur quattro restoration

                        S2 Avant

                        Boost is the new rock and roll!
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                        • #13
                          How can i find what PIN on the connector is the RPM signal , the connector that goes on the dashboard ? And what color ,, i think it is sw/bl correct ?

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                          • #14
                            And i should take the GPO8 from maxxecu and connect on that wire .. correct ? The yellow connector ?

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