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Discussion Starter #1
Can anyone tell me where the fuse or the relay for the A/C compressor clutch is? I know where the two fuse/relay boxes are behind the battery, I just don't know which fuse/relay to pull to stop the compressor clutch from engaging.

My A/C has been in disuse for so long that it makes very loud noises and makes the whole car vibrate when it engages, and I would like to just disable it. This wouldn't normally be an issue in most circumstances, but because it engages automatically when I set the interior air to defrost my windshield, it makes driving during the wet and cold seasons a bit of a pain.

...Also, repairing/replacing the A/C compressor is kind of out of the question as I cannot afford to do so.
 

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Discussion Starter #3
Yeah. I just don't have any way to lift the darn car up so I can get under there and do that at the moment.
 

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Yeah. I just don't have any way to lift the darn car up so I can get under there and do that at the moment.
you don't have a jack in the car to change a tyre? use that and a couple of bits of wood to block it in case it slips off the jack

and the fuse box cover is labelled with fuse descriptions
 

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Discussion Starter #5 (Edited)
and the fuse box cover is labelled with fuse descriptions
Said fuse descriptions are "relay 1" "relay 2" etc. They do not actually say which piece corresponds to which part of the car.

you don't have a jack in the car to change a tyre? use that and a couple of bits of wood to block it in case it slips off the jack
Yeah, my tire jack is in the trunk....but that little thing isn't meant to be safe enough to crawl under a car with. Add a touch of claustrophobia to the mix, and the thought of that being the only thing holding up the car with me under it is terrifying beyond belief. :/
 

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if it looks like the one in this pic, relays are at the end as shown.

relay labelled as "1" in the pic is the compressor relay, Diagrams from a 2003.
 

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Discussion Starter #7
Well, the diagram you gave me doesn't correspond to my vehicle, but I went and tried anyway. I pulled every fuse and every relay in both relay/fuse boxes one by one and started up the car to test the defrost setting for the fan and the AC button. Nothing disabled it. Though there is a big 80A fuse I couldn't pull out (I figured if it's that difficult to pull out, I probably shouldn't try any harder).

I also took a look under the car and can't see anything without it being lifted up. The A/C compressor is behind the tire, as far as I can tell, and of course there's that lining that covers the bottom and wheel-well side of the engine compartment. I think there's just straight up nothing I can do to disable the darn thing with what I have.
 

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there should be an a/c button on the heater control panel, does that not work?

and one of the relays under the bonnet will control the compressor. the big 80a fuse is the main one for the car and is bolted in.
 

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there should be an a/c button on the heater control panel, does that not work?
I....what? What did I say that made you think that? No, the button works just fine. My issue this entire time has been wanting to make it so the AC compressor can get no power as it is clearly damaged.

and one of the relays under the bonnet will control the compressor.
Like I said, I pulled every single one out, one by one, and started up the car and tested each time. The compressor engaged every single time. None of the relays or fuses being pulled stopped it from engaging. I'm telling you this as a *fact* because I just did this a few hours ago.

I'm sorry, I know you're just trying to help. I'm super frustrated with the situation and how even simple trial-and-error testing hasn't resulted in anything useful.
 

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I....what? What did I say that made you think that? No, the button works just fine. My issue this entire time has been wanting to make it so the AC compressor can get no power as it is clearly damaged.


Like I said, I pulled every single one out, one by one, and started up the car and tested each time. The compressor engaged every single time. None of the relays or fuses being pulled stopped it from engaging. I'm telling you this as a *fact* because I just did this a few hours ago.

I'm sorry, I know you're just trying to help. I'm super frustrated with the situation and how even simple trial-and-error testing hasn't resulted in anything useful.
if you press the a/c button on the heater control panel so it is not illuminated, that disables the A/C compressor from activating when you select defrost, or turn the fan on in the car
 

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Discussion Starter #11
if you press the a/c button on the heater control panel so it is not illuminated, that disables the A/C compressor from activating when you select defrost, or turn the fan on in the car
The A/C compressor engages when I move the fan direction to defrost regardless of if the A/C button is pressed in or not. According to anyone I've ever asked, that is normal and standard behavior of the instruments.
 

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The A/C compressor engages when I move the fan direction to defrost regardless of if the A/C button is pressed in or not. According to anyone I've ever asked, that is normal and standard behavior of the instruments.
mine does the same, but pressing the a/c button disables the compressor in my car once i have selected defrost setting. Strange none of the relays under the hood stop the compressor, there has to be one there that does it. Would be a lot easier to just pull the wire off the compressor, its easy enough to get to, even driving the car across a deep gutter (one wheel on the kerb, one on the road) will give enough height, or go find someone with a decent jack for the 5 minutes its going to take to do the job.
 

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Discussion Starter #13
Would be a lot easier to just pull the wire off the compressor, its easy enough to get to, even driving the car across a deep gutter (one wheel on the kerb, one on the road) will give enough height, or go find someone with a decent jack for the 5 minutes its going to take to do the job.
Yeah, that's what I really want to do. I just don't have the knowledge to know what to pull. I can see two power cords near two different pulleys from up top (one is behind the air filter's tube and hard to reach, so if I pulled that and am wrong, I wouldn't be able to plug it back in), the other is down low near the front of the engine...but I also don't think that's the right power cord to pull.

If it's behind the wheel well like I think it is, the liner covering some of the underside of the engine compartment might make it hard to get to, even if I get up under it somehow.
 

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there will be a plug right at the compressor with 1 wire going into the clutch behind the compressor pulley, thats the one you need to disconnect.
 

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Are you sure the compressor is engaging? With your wheel turned towards the passenger side and the vehicle running you should be able to see the compressor pulley at the bottom front of the engine while laying on the ground. When you turn on the blower with the temperature set to cold with the AC button off the outside bit of that pulley should be stationary. When you do the same with the AC button on the outside pulley should be spinning. If it doesn't spin in either circumstance then it's not engaging at all. If it spins in both then that button isn't working. My ac compressor clutch failed and it taxed the engine without me realizing and eventually broke my serpentine belt when I had it running. You should be able to tell if this is happening if the power steering also seems weird when the AC is on.
 

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Are you sure the compressor is engaging? With your wheel turned towards the passenger side and the vehicle running you should be able to see the compressor pulley at the bottom front of the engine while laying on the ground. When you turn on the blower with the temperature set to cold with the AC button off the outside bit of that pulley should be stationary. When you do the same with the AC button on the outside pulley should be spinning. If it doesn't spin in either circumstance then it's not engaging at all. If it spins in both then that button isn't working. My ac compressor clutch failed and it taxed the engine without me realizing and eventually broke my serpentine belt when I had it running. You should be able to tell if this is happening if the power steering also seems weird when the AC is on.
hes sure, read his first post.
 

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Sorry bout that, I got caught up on the diagnosis steps. We can skip past all that in this case. I'll see about finding some better diagrams. According to my findings, the fuse for the 2003 should be a 60amp.
Screenshot_20191020-150512.png
The HTR bit if your fuse block is like this. Although if that is the case it is linked to your blower.
 
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