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2005 AC issue

Discussion in 'Gen 2 Prius Technical Discussion' started by Luiggie, Jun 26, 2017.

  1. Luiggie

    Luiggie Junior Member

    Joined:
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    Vehicle:
    2005 Prius
    Model:
    N/A
    Blower fan not working, the issue is intermitent. If I start to play with AC controls(On and Off) sometimes it start sometimes not, what I noticed is each time I click on button the blower start but within a second it stop and it did not reach the correct velocity.
    I replaced the fan blower yesterday and cabin filter and same issue. What else I have to check? Summer here and hot days also :(

    2005 Prius 141k miles


    iPhone ?
     
    #1 Luiggie, Jun 26, 2017
  2. JC91006

    JC91006 Senior Member

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    Model:
    II
    You'll need to replace the fan blower controller, it's a small box that the fan blower connects to
     
    #2 JC91006, Jun 26, 2017
  3. 05PreeUs

    05PreeUs Senior Member

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    What JC91006 said!

    The blower fan controller is essentially the same as the Electronic Speed Controller (ESC) for a Remote Control model car, truck, plane, boat; it is also an analogue of the "blower motor resistor block" of yesteryear, albeit an electronic one. It take the blower speed demand signal from the Climate Control system (low voltage and low current) and applies voltage, but with a much higher amperage limit to the blower proportionally.
     
    #3 05PreeUs, Jul 3, 2017
  4. Luiggie

    Luiggie Junior Member

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    Location:
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    Vehicle:
    2005 Prius
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    N/A
    Thanks!! Replaced fan blower controller and now AC is working fine!!


    iPhone ?
     
    #4 Luiggie, Jul 3, 2017
    valde3 and bisco like this.
  5. 1SteelerFan

    1SteelerFan Junior Member

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    2005 Prius
    Model:
    Base
    Check your blower resister
     
    #5 1SteelerFan, Jul 29, 2017
  6. dolj

    dolj Senior Member

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    Hi and welcome to PriusChat. You will notice in the above couple of posts that this problem was solved.
     
    #6 dolj, Jul 29, 2017
  7. Prius Mama

    Prius Mama New Member

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    Vehicle:
    2005 Prius
    Model:
    One
    Was it hard to do? Think mine has same issue. Although it always blows out fine just doesn't get cool for while- takes few minutes and it's intermittent tho. Today I noticed that the left side was blowing little softer and room temperature but the two vents on the right were cool!
     
    #7 Prius Mama, Aug 8, 2017
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