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Hoping someone familiar with the BUDS/ECU error codes can take a look at my attached first ECU data download screen shot and help me understand the fault and failure codes indicated.  Is there a public document which describes these codes?  The engine has just less than 25 hours on it.  Anything I should be concerned about?

  • Re: ECU Downloads and Interpretation

    by » 4 years ago


    Looks like the screen shot didn’t load.   Let’s try again. 

    27924_2_4F11540F-FAA0-4327-BB23-1715666ED48F.jpeg (You do not have access to download this file.)

  • Re: ECU Downloads and Interpretation

    by » 4 years ago


    It looks like you have a loose connection in the CAN BUS wiring.
    Engine OFF; you should measure 60 OHMS across the two CAN wires.

    The eTPU Synchronization Errors relate to the Crankshaft Position Sensor. ( Enhanced Time Processing Unit)

    Both of these signals connect to the ECU on the same connector.
    Check that the large connectors on the ECU module are secure.


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.


    Thank you said by: John O'Hara

  • Re: ECU Downloads and Interpretation

    by » 4 years ago


    Thanks, Bill.  I've looked through the Heavy Maintenance Manual, which is where I would expect to find a pin out for the HIC connectors, but no luck.  Can you point me to the correct reference document to find this?

    Thanks again.

    Bob


  • Re: ECU Downloads and Interpretation

    by » 4 years ago


    The User end of the HIC Connector is in the Installation Manual. (Chapter 24-00-00, Page 22)  (CAN Bus)
    The ECU ends (A1,A2,B) are not documented anywhere that I know of. (Crank Position Sensor). Sucks!
    You can check the CAN BUS on the HIC Connector but the problem is more likely on the ECU Connector End.
    Be sure to have a look at the Crank Sensor connections before you get too far into it.

    This looks like a Reverse Engineering Job.
    A little tedious, but if you work a plan, it should be doable in a few hours. (<100 wires)

     


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.


  • Re: ECU Downloads and Interpretation

    by » 4 years ago


    Thanks, Bill.  Looks like I’ve got more research to do.  Any value in clearing the faults and seeing how the log looks after another flight?


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