sometimes we start the engine, The LaneA light will not automatically go off after 3 seconds. when I turn off the LaneA and turn on again. The LaneA light went off. 

It appears with the following warning:diagnostic can bus communication. please see the picture.

And start the engine again, the laneA and LaneB will automatically go out.

How do you check for this problem? Thanks.



  • Re: Problem of diagnostic can bus communication

    by » 4 months ago

    You are probably getting a momentary voltage dropout during the engine cranking process.
    This is a common occurrence in many airframes.
    If power cycling the Lanes after starting clears the faults,  You are good to go.
    - - -

    Ref.  Warning: Diagnostic Can Bus Communication

    The "Diagnostic" Can Bus is the Connection used to attach the BUDS Interface to the Computer used to interrogate the ECU.
    This has NOTHING to do with the normal operation of the engine; Confirming the probable intermittent voltage dropout.

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

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