Found cut wires dangling under front bumper and horn no longer worked

Yeah you're on the right track One of the things you're holding in your hand plugs in in the bar that goes from the upper core support to the lower core supporter runs down the middle of the radiator plugs in right on the oval hole that opaque plastic plug you have that's the outdoor temperature sensor It's for your air conditioning and for your telling you what the temperature is and all that sort of thing. The other two slide on connector should go to your horn which should be about 14 in above where you just put that temperature sensor back did this car have an accident or how did these wires wind up with their opaque clips pulled off of their places where they go kind of weird.

 

Have you checked to see if you still have your catalytic converter?

 

Look at the photo where the wiring goes. Signals and temperature sensor.

TOYOTA-PRIUS by MAX2 posted Mar 26, 2025 at 1:07 PM

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Here in pic were missing center support mid radiator that those push on go in that metal bat to hold sensor mid radiator

 

The central pillar was on another car.
Photo for general understanding.

You can always check the features of your car yourself by unscrewing several fasteners.

 

Well I was just talking about for when he reaches his hand down there to put the little opaque oval shaped connector into the oval shaped hole for the sensor well the piece the pipe or the support would be there I'm just letting him know that in this picture the support is not there so when his mind goes hey where's that piece that the thing plugs into but yes I get the picture is as is got it perfect.

 

The wiring diagram shows the horn(s) are fed by a single black wire.

Posted via the PriusChat mobile app.

 

Yep the three wires brown white and black come off the center of the tab off the aluminum part of the inner bumper structure The white and the brown go down to the temp sensor and the black goes to the horn I had to rewire this nonsense on another car that got hit in the front end

 

The wiring harness going to the radiator is shown in the figure.

Position Of Parts by MAX2 posted Mar 27, 2025 at 9:24 AM

There are three conditional consumers on this harness.
- A6 Ambient Temp. Sensor
- H9 Horn (High)
- H10 Horn (Low)