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I have a brand new RV-12iS and today was going to be the second flight. The first flight went great.

Immediately after startup, both Lane A and B started flashing, and an alarm showed up on the EFIS. The faults shown by the EFIS -> see picture. In the readout of Dynon's log file (see file) I see an error in the sensors while the sensor data stopped. Just after startup.  

I was advised to buy or borrow a dongle to download the ECU log data. But maybe this is something "easy" and I look forward to suggestions regarding this issue.  

7813_1_IMG_20200228_092255.jpg (You do not have access to download this file.)
7813_1_Schermafbeelding 2020-02-28 om 18.16.35.png (You do not have access to download this file.)
  • Re: Lane A and B flashing after startup

    by » 4 months ago


    You have lost all the data that originates in the ECU.

    The CAN-Bus connectors would be my first choice.

    The first "Easy" thing to look for would be a loose connector or a chaffed wire.


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


    Thank you said by: Gordon Rose

  • Re: Lane A and B flashing after startup

    by » 4 months ago


    Hi Bill, thanks for your input. Back at the hangar I will check the connectors and cables.

    I am still at the bottom of a long and steep learning curve here ....

    Immediately after the error occurs, I see that the amps (still visible through Dynons EMS) drop off (first picture). And after both lanes are switched off, the data come back on again (second picture). Are these findings in accordance with your suggestion? Or does this hint at something more serious?

     

     

    25206_2_Schermafbeelding 2020-02-29 om 10.21.54.png (You do not have access to download this file.)
    25206_2_Schermafbeelding 2020-02-29 om 10.22.23.png (You do not have access to download this file.)

  • Re: Lane A and B flashing after startup

    by » 4 months ago


    In Second-guessing myself, it could be something as simple as the voltage is dropping below 9 volts during the start and the ECUs are faulting out.

    When the lanes fault, the ECU will take all the generator power for itself and the battery will go into a discharge.

    If the Lanes reset after the engine start and does not re-fault, this is a possibility.

     

    Access to a dongle is a requirement for all owners of these engines.

    If your mechanic does not own one, you should!

    The inspection of the logs is a checkbox item on the Annual/100hr inspections.

    If the logs were not downloaded, the inspection was not completed.

    By all means, examine the ECU log file and see why the lanes faulted.

     


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


    Thank you said by: RotaxOwner Admin

  • Re: Lane A and B flashing after startup

    by » 4 months ago


    Hi Bill,

    Thanks for your thoughts and suggestions. I will order a dongle and post the outcome hopefully by the end of next week. 


    Thank you said by: RotaxOwner Admin

  • Re: Lane A and B flashing after startup

    by » 3 months ago


    It took me a bit to get the ECU log files. Bought the dongle. Installed the software on an old laptop. But then the connection with the maintenance port and the ECU didn't work. Whatever I tried.

    I thankfully could borrow a engine simulator and hooked that up with the HIC and a few other connectors. That worked.

    Is there anybody (Bill?) on the forum who can and is willing to open, read and interpret these logs? Would be very much appreciated to get some opinions. 

    In the next few days I will also run the engine through the simulator, hooked up with the dongle and diagnostic software to see if there are any errors popping up on the Rotax side.

     

    25300_2_DSC_8266.jpg (You do not have access to download this file.)

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