Where is the A/C compressor relay located?

JOHNLEHNE

MEMBER
2007 NISSAN MURANO
3.5L
6 CYL
4WD
AUTOMATIC
254,000 MILES

Hello, I am trying to find the location of the A/C relay for my vehicle listed above, any ideas? My compressor has been tested but the clutch is not engaging when on and the blower motor fan is working fine so I am thinking it is the relay.

Monday, August 2nd, 2021 AT 8:19 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

It's located in the IPDM (intelligent power distribution module) under the hood, front, passenger side. See pic 1 below.

Additionally, note there is a fuse that powers the relay. It is fuse 79. Check the fuse and confirm there is power to and from it. Here is a link to help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

As far as the relay, here is a link that explains how to test one.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I also attached the entire wiring schematic for the A/C system. There were two pages. I had to cut each one in half to make them readable for you. I did overlap them so you can follow from one to the next. I also highlighted the relay, fuse, and wires related to the relay.

I hope this helps. Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.

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Monday, August 2nd, 2021 AT 10:08 PM

JOHNLEHNE

MEMBER
2 POSTS

Hi Joe,

Thank you for your information, it is helpful. I am able to follow your schematic to a point I see where you have highlighted the relay but still having trouble identifying which relay is for the A/C compressor? The fuse is getting power and the fuse is good. I had also gotten some information that it is actually located inside of the IPDM unit and is non-serviceable? Can I send you a pic of the IPDM so you can point out which one it is? Thanks again for the help!

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Wednesday, August 4th, 2021 AT 6:13 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

I pulled up the manufacturer's schematic related to the relay. It is built into the IPDM and non-serviceable.

I attached the schematics below and highlighted the info.

I reread your original post. Are you sure the compressor clutch isn't bad? Have you checked to see if there is power to it? The compressor receives power via a yellow wire with a black tracer. Have you checked that?

Also, you mentioned the compressor was tested. Did they happen to tell you the high and low pressure readings?

Is the check engine light staying on when the engine is running because there are different things that will turn the compressor off if there is a fault. For example, if there is a misfire, it will shut the compressor down.

Let me know.

Joe

See pics below.

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