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M42 idle control valve - control method

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  • burkey001
    replied
    perfect, thank you

    Leave a comment:


  • bmwman91
    replied
    The ECU drives it with a ~100Hz PWM signal.

    Leave a comment:


  • burkey001
    started a topic M42 idle control valve - control method

    M42 idle control valve - control method

    Hi,

    Does anyone know how the IACV is controlled?

    is it PWM or simply variable voltage from 0-12?

    Have yet to put a probe on pin 29 of ECU.


    Just interested :)

    thanks

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