Light on but compressor is not engaging

Tiny
REDWOODRAV
  • 2003 TOYOTA RAV4
  • 4 CYL
  • 90,000 MILES

Light on but compressor is not engaging. What could be wrong?

When I press the A/C button, the light comes on steady. However, the compressor clutch does not engage, and obviously no cooling takes place.

I've checked the fuse in the fuse box under the hood, and no problem there. I'm not getting any trouble codes from the OBD II diagnostics.

Some of my research indicates a possible problem with the magnetic clutch relay, however I have not been able to find that relay's location in the car. It doesn't appear to be one of the ones in the fuse box under the hood.

Any help on the following would be appreciated

1. Thoughts on why the compressor clutch isn't engaging?
2. Location of the magnetic clutch relay?
3. Any other troubleshooting or investigation tips?

The a/c was working fine recently, so I don't believe it's a Freon problem. In addition, when I turn on the a/c, the compressor clutch doesn't engage and the compressor doesn't turn. I don't see how low Freon would keep the compressor from turning.

Thanks.

Do you
have the same problem?
Yes
No
Monday, April 4th, 2011 AT 6:03 AM

1 Reply

Tiny
2CARPROS KEN
  • ADMIN
  • 12,124 POSTS

Hello,

First check to see if the compressor is getting power here is some guides and some air conditioner wiring diagrams (below) to help you do some testing. If you do have power at the compressor then the unit is bad and needs to be replaced.

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

and

https://www.2carpros.com/articles/replace-air-conditioner-compressor

Here is the compressor for $150.00 from Amazon

https://www.amazon.com/gp/product/B00SLKCBBC/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=2carprcom-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00SLKCBBC&linkId=8b685f720507cdbe1756bfd87c2d0b86

and

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

Please run some tests and get back to us we are interested to see what it is.

Cheers, Ken

Was this
answer
helpful?
Yes
No
Monday, July 3rd, 2017 AT 3:14 PM

Please login or register to post a reply.

Recommended Guides