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A/C Blower Motor Resistor

Discussion in 'General Tundra Discussion' started by Tortuga83, Oct 14, 2023.

  1. Oct 14, 2023 at 3:02 AM
    #1
    Tortuga83

    Tortuga83 [OP] New Member

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    Anyone have a picture of where the blower motor resistor is located on a 2018 Tundra? I saw the exploded view on the forums but I am still unable to locate.
     
  2. Oct 15, 2023 at 6:11 PM
    #2
    Jeff_5_7

    Jeff_5_7 New Member

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    2007 RCSB 2014+ TRD Pro Conversion 5.7 4x4
    Full 2014+ Conversion Regular Cab Short Bed 4X4 2019 TRD Pro Grill, 2014+ Front End Swap 2014+ Interior/Dash Swap with TRD Pro Leather Seats, 2014+ Bed Swap with TRD Pro Stamping SOS 2/4 Drop Kit
    The truck does not have a power motor resistor.

    Blue wire is power from the 50A fuse, black and white is ground wire. Green is a serial communication line from the AC ECU. I would assume the AC ecu controls the fan speed via this wire. This would mean the blower motor has some internal circuitry to adjust power delivery based on the input data from the AC ECU


    upload_2023-10-15_20-8-47.png
     
  3. Oct 15, 2023 at 7:00 PM
    #3
    Tortuga83

    Tortuga83 [OP] New Member

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    Okay, what you are telling me is I should just replace the blower motor if the A/C has just one speed?
     
  4. Oct 15, 2023 at 7:06 PM
    #4
    RainMan_PNW

    RainMan_PNW "Oz" SSEM #82 RGBA #4 Unofficial Forum Treasurer Vendor?

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    Check the build link in my signature.
    Manual (3 knobs) or Auto (2 knobs) A/C?
    It could be the motor, or it could be your A/C "Amplifier" (ECU). The blower motor is probably the less expensive item to check first.
     
  5. Oct 23, 2023 at 1:41 PM
    #5
    Tortuga83

    Tortuga83 [OP] New Member

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    it’s a manual 3 knob (SR5)
     

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