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Command Link gateway to display Yamaha engine data on MFD stopped working

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  • #16
    I really did not understand what you wrote, but if you put 24volts to the F70 motor, there could be damage to all sorts of things

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    • #17
      ok, I finally got around to test and good news i have 60 ohm by connecting my multi-meter to the blue wire and white wire of the CL multi-hub with key switch for power to CL multi-hub to off position and with NEMA2k backbone connected to my Raymarine Axiom also power off. So my NEMA2000 and CL are properly connected. Yes the 6YG-8A2D0-00 is also connected when doing my ohm test.

      so, the only problem is the 6YG-8A2D0-00 i am going to ship it back to headquarter for a repair or replacement.

      thanks a million for your help. I will post a video soon.

      Originally posted by fairdeal View Post
      Yamaha 'Command Link' is essentially NMEA 2000
      so four conductors:
      red=12V+,
      black=ground,
      and the blue and the white are the data wires.

      The wiring for NMEA 2000/Command Link,
      when properly configured,
      is arranged in a "backbone" - with,
      at each end, the white and the blue wires connected via a 120 ohm resistor
      like so:




      as far as testing 'data wires'
      with all the devices 'off',
      you should have:
      - continuity between all whites,
      - continuity between all blues,
      - a 60 ohm resistance between white and blue, anywhere


      By the way -
      ​​​​​​​I didn't see what Yamaha model you are working with;
      but, although Yamaha 'assumes' you will use their Gateway -
      if the engine is 'mechanical control' -
      NOT "DEC" / 'drive by wire' -
      then you really don't need the Yamaha Gateway -
      just connect up without it.
      Captain steve - 1974 wellcraft airslot 165 with 2019 Yamaha 70

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      • #18
        Oh Oh, I am not 100% certain that I disconnected 1 of my 24 volts battery to get 12 volts to start my engine.
        I think I did but unsure.

        How do I check whether I ruined the ECM on the F70?

        Please help and thanks.,


        QUOTE=99yam40;n220925]I really did not understand what you wrote, but if you put 24volts to the F70 motor, there could be damage to all sorts of things[/QUOTE]

        Captain steve - 1974 wellcraft airslot 165 with 2019 Yamaha 70

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        • #19

          I have not heard of anyone hooking 24V up to a 12 v system like this before, so
          I really have no idea how to check things out

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          • #20
            The ECU is on the test machine now....the Engine. If the the engine is running properly , then the ECU is working fine.

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            • #21
              my 2019 Yamaha 70 hp is working properly, so will have to ask dealership to check th 6YG-8A2D0-00-00 gateway.

              QUOTE=panasonic;n220936]The ECU is on the test machine now....the Engine. If the the engine is running properly , then the ECU is working fine.[/QUOTE]

              Captain steve - 1974 wellcraft airslot 165 with 2019 Yamaha 70

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