A/C blows hot air and compressor does not turn on

Tiny
MARIEC2060
  • MEMBER
  • 2011 TOYOTA SIENNA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Van listed above is the Limited model. A/C blowing hot air and compressor not engaging. Not sure which relay is for the A/C compressor. It won't take Freon since the compressor won't engage. Not sure if it is the relay integration switch since I don't know how to check that. And I don't know how to jump the pressure switch since it has 3 slots. Pictures attached.
Appreciate your help.
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Sunday, September 29th, 2019 AT 10:50 AM

3 Replies

Tiny
KEN
  • ADMIN
Hello,

There is an air conditioner amplifier that runs the compressor along with 7 fuses. here are the wiring diagrams for the system so you can see how it works and a guide to help you test for power:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Tuesday, October 1st, 2019 AT 12:03 PM
Tiny
MARIEC2060
  • MEMBER
I took it to Toyota and they said that the fuses and relay are fine. They won't diagnose the problem for free. Any other suggestions?
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Thursday, October 3rd, 2019 AT 8:19 AM
Tiny
KEN
  • ADMIN
Does the system have pressure? Here is a guide and a video to help us:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

and

https://youtu.be/uZrQCGwXfek

Please run down these guides and report back.
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Thursday, October 3rd, 2019 AT 12:52 PM

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