A/C compressor stopped working?

2004 TOYOTA SIENNA

360,000 MILES • V6 • 2WD • AUTOMATIC

RENAV

MEMBER
9 POSTS

Mechanic friend checked pressure, which it still has (FYI, it tastes and smells gross!). Not sure if the relay is not working or if there is an issue with the compressor. We are both researching the internet and I came to my go to spot for car questions.

Jun 4, 2023 at 10:53 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Good to hear. The first thing we need to do is see if the compressor clutch is getting power with the system on.

This guide can help you test for power:

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

Here are the AC system wiring diagrams so you can see which fuses to check for power as well. Also, it will show which wire to check for the compressor and how the system works.

This guide may help as well:

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

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jun 5, 2023 at 1:32 PM