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AC blower turning off/on rapidly

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Toyonka, Aug 13, 2018.

  1. Toyonka

    Toyonka Junior Member

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    Is there any easy fix for my AC fan rapidly turning off and on, a couple of times a second, randomly?

    It's as if the power is getting cut intermittently. The fan never fully stops, just dies for half a second then comes back on full.

    It's like turning from speed 6 to speed 1 then back to 6 quickly.

    Thanks.
     
    #1 Toyonka, Aug 13, 2018
  2. frodoz737

    frodoz737 Top Wrench

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    You might check the connector on the blower motor.
     
    #2 frodoz737, Aug 13, 2018
  3. bisco

    bisco cookie crumbler

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    never heard of it, could be in the switch or control circuitry. how many miles on her?
     
    #3 bisco, Aug 13, 2018
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  4. Toyonka

    Toyonka Junior Member

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    2014, 45,000 miles but lots of AC usage here in California
     
    #4 Toyonka, Aug 13, 2018
  5. bisco

    bisco cookie crumbler

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    there's not much to it, but it could take some electrical diagnosis. it is under the cabin filter, and there are other video's like frodo's above. you could try putting 12v to it to eliminate the motor.
     
    #5 bisco, Aug 13, 2018
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  6. Grit

    Grit Senior Member

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    There's another button to the right of the A/C button, forgot what's it called. But it does the same thing for me, just turn that feature off if you haven't tried that.
     
    #6 Grit, Aug 13, 2018
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