Prius 2015 blower not working

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by abidz05, Aug 14, 2022.

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  1. abidz05

    abidz05 New Member

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    Hi All,

    I have a 2015 Toyota Prius with a blower motor that does not work. I took the blower motor out which has 3 pins connection negative, positive and one middle pin. I connected the blower to 12 V battery but it seems to be not working. I only connected the negative and positive, not sure about if the middle one is needed. I also checked the connection to the blower from the car and it seems that there is no power coming to it at all. Any idea how to diagnose this, or to start.


    Thanks
     
    #1 abidz05, Aug 14, 2022
  2. PriusCamper

    PriusCamper Senior Member

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    Which blower motor? Itf it's the one for the hybrid battery you can use Hybrid Assistant app via a bluetooth OBD2 reader to power up the fan to confirm it works.
     
    #2 PriusCamper, Aug 14, 2022
  3. abidz05

    abidz05 New Member

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    No this is the AC blower Motor
     
    #3 abidz05, Aug 14, 2022
  4. bisco

    bisco cookie crumbler

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    find the fuse and see if it blew. if not, check for voltage. if there's voltage, then you have awiting issue in between, or from the fan switch, or bad switch
     
    #4 bisco, Aug 14, 2022
  5. abidz05

    abidz05 New Member

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    I checked for fuses for this fan, but none seems to be there
     
    #5 abidz05, Aug 14, 2022
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  6. Elektroingenieur

    Elektroingenieur Senior Member

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    In the Repair Manual (more info), see the topic Vehicle Interior: Heating/Air Conditioning: Air Conditioning System: Blower Motor Circuit.
    The third terminal (SI) on the connector is the blower motor speed control signal, and yes, it’s needed for the blower motor to run.
    It’s the HTR fuse, a 50 A fuse element in a 50 A/30 A/30 A fusible link (part number 90982-08300) in the engine compartment. In the Owner’s Manual (PDF), see “Checking and replacing fuses,” pp. 466–477; the HTR fuse is item ① in the illustration on page 469.
     
    #6 Elektroingenieur, Aug 15, 2022
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  7. ToyXW

    ToyXW Active Member

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    Turn it on high. If it doesn't come on, give the blower housing a good thump with your hand/fist and see if it comes on.
     
    #7 ToyXW, Aug 15, 2022
  8. nicoj36

    nicoj36 Active Member

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    Just get new blower motor
     
    #8 nicoj36, Aug 15, 2022
  9. PriusCamper

    PriusCamper Senior Member

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    after you confirmed that's the source of the problem...
     
    #9 PriusCamper, Aug 15, 2022
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