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Ambient Temperate Sensor Missing...but

Discussion in 'Gen 3 Prius Technical Discussion' started by catchy_neck, Feb 26, 2021.

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  1. catchy_neck

    catchy_neck Junior Member

    Joined:
    Feb 21, 2021
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    Location:
    NC, USA
    Vehicle:
    2014 Prius
    Model:
    Four
    Hello! The ambient temperature sensor on my car is missing - as in there is an open connector where it is supposed to be. This is likely due to the fact that I purchased the vehicle with prior front end damage which had been repaired, and I guess the shop got lazy.

    The peculiar part to me, though, is that the HVAC Temp Control Panel in the cabin displays a decently accurate outside temperature, and the A/C system seems to work just fine.

    Is there another sensor on the car which supplies the outside temp value to the HVAC Temp Control Panel? If not, any ideas on how I seem to have an accurate outside temp reading? And is this presumably affecting A/C amplifier function, even if by an unnoticeable amount?
     

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    #1 catchy_neck, Feb 26, 2021
  2. PriusCamper

    PriusCamper Senior Member

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    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    It would make sense that there's more than one temp sensor if you're still getting a reading on the screen... But it also could be that the auto shop mistakenly mounted that sensor somewhere further upstream of that circuit and spliced in the wires/plug from previous harness? I suspect if you were to set up Toyota Techstream via a min-VCI connector it would show all the internal and external temp sensor and you'll get a better sense of where there's a loss of signal.
     
    #2 PriusCamper, Feb 26, 2021
    Mendel Leisk likes this.
  3. catchy_neck

    catchy_neck Junior Member

    Joined:
    Feb 21, 2021
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    Location:
    NC, USA
    Vehicle:
    2014 Prius
    Model:
    Four
    Great idea! I am new to the Prius world, so getting equipped with Techstream is a suggestion I will act on.
     
    #3 catchy_neck, Mar 1, 2021
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