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Where does this connector go?

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by AndChev, Jun 9, 2021.

  1. AndChev

    AndChev New Member

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    Good evening,

    I recently purchased a 2017 Toyota Prius Two Eco and love the car, however when I received the car I noticed a connector wasn’t connected to anything. This connector is located behind the front bumper and is coming off the main wiring right next to connector to the radar sensor. I’ve spend tons of time trying to figure out where this goes with no luck. Does anyone have any idea what this goes to? There is a image attached for clarification Thanks!
     

    Attached Files:

    #1 AndChev, Jun 9, 2021
  2. thomassster

    thomassster Member

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    How many pins or metal contacts? The horn harness is around that area and there are 2 horns to accommodate for 2 different tones. Test your horn.
     
    #2 thomassster, Jun 10, 2021
  3. alanclarkeau

    alanclarkeau Senior Member

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    It may not connect to anything - I've had cars with stray connectors - in place for options. I had an A/C installed, I think in a Daihatsu?? about 1990, the installer said - "good, the wiring is all there".
     
    #3 alanclarkeau, Jun 10, 2021
    Elektroingenieur likes this.
  4. AndChev

    AndChev New Member

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    It has 6 pins it’s right between both horns which are each connected to two different 2 pin connectors. I’ve even went to Toyota and they couldn’t tell me what it is. At this point I think the only way to figure it out is to look at another Prius and compare.
     
    #4 AndChev, Jun 10, 2021
  5. Elektroingenieur

    Elektroingenieur Senior Member

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    It’s connector BA1, shown in the Electrical Wiring Diagram (more info) and described in this previous thread: Extra connector on engine harness | PriusChat

    One other thing from your photo, in case you weren’t aware: the white label on the bumper reinforcement and the bright-green cable tie, neither original from Toyota, suggest that the car has been damaged and repaired.
     
    #5 Elektroingenieur, Jun 10, 2021
    alanclarkeau and krmcg like this.
  6. ColoradoBoo

    ColoradoBoo Senior Member

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    My wife has your same car, 2017 Prius 2...has been a great car so far! We drove it to Maine and back from Colorado and spent $200 on gas, total!
    If you were to remove the cover underneath the dash in the front, you'll also find unused white connectors which is what you tap into for power if you buy the illuminated doorsills from Toyota. Very convenient.
     
    #6 ColoradoBoo, Aug 15, 2021
  7. Georgina Rudkus

    Georgina Rudkus Senior Member

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    It could be the connector to the sensor for the upgraded adaptive cruise control, which is embedded in the emblem in the higher trim models.
     
    #7 Georgina Rudkus, Aug 15, 2021
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