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Motor blower controller

Discussion in 'Gen 2 Prius Main Forum' started by lexidium, Oct 15, 2021.

  1. lexidium

    lexidium Active Member

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    How do you test it out of the car with a multimeter?
    [​IMG]
     
    #1 lexidium, Oct 15, 2021
  2. alftoy

    alftoy Senior Member

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    #2 alftoy, Oct 15, 2021
  3. ChapmanF

    ChapmanF Senior Member

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    Long-time member hobbit described the thing pretty thoroughly here (in the context of building a hack to control the blower while the car is off, for camping).
     
    #3 ChapmanF, Oct 15, 2021
  4. mr_guy_mann

    mr_guy_mann Senior Member

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    You can't really test the blower controller that way. It has to be connected like it was in the car- power, ground, and control signal (variable duty cycle squarewave) going in, and a load (blower) on the output. Then see if it works.

    Posted via the PriusChat mobile app.
     
    #4 mr_guy_mann, Oct 15, 2021
  5. ChapmanF

    ChapmanF Senior Member

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    In a pinch you might use something like a headlight for a load. I see in hobbit's write-up that about 5 kHz works for the control signal, and more low time in the duty cycle translates to more output. Pinning the control input to ground could be an easy way to get max output for a quick test.
     
    #5 ChapmanF, Oct 15, 2021
  6. lexidium

    lexidium Active Member

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    I've now realised how stupid I am.
    I was talking about the hybrid battery controller and thinking it was the same as the A/C blower controller which it isn't.
    It's the black one in there
    BMC.jpg
     
    #6 lexidium, Oct 26, 2021
  7. ChapmanF

    ChapmanF Senior Member

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    I do believe they work pretty much the same way.
     
    #7 ChapmanF, Oct 26, 2021
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