Where is the A/C compressor control relay located?
2000 TOYOTA SIENNA
197,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
RODNEY HALL2
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15 POSTS
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I'm having trouble finding the a/c compressor control relay. On the van listed above, it's not marked from what I can see.
Nov 12, 2022 at 5:38 PM
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STEVE W.
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15,113 POSTS
There isn't one. It is controlled through the A/C amplifier module. What is the issue, no A/C control? If yes take a jumper wire and test the clutch by applying battery voltage to the terminal the black wire with white stripe is on. That will activate the clutch. If it clicks, it's okay. Check the A/C fuse in the driver's side fuse box if you don't see the light come on with the A/C switch it may be blown. Beyond that you may want to check the system's refrigerant pressure as well. Low or no charge could also cause it to stop working.
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Nov 12, 2022 at 10:38 PM
RODNEY HALL2
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15 POSTS
Just blinks. i found the replacement part at two auto part stores. So, I thought it was one. Light comes on A/C works 30 seconds the blinks clutch disengaged.
Nov 13, 2022 at 3:24 AM
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RODNEY HALL2
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15 POSTS
Which terminal do I apply power to?
Nov 13, 2022 at 3:25 AM
RODNEY HALL2
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15 POSTS
I wanted to ask it just came to mind I have the peephole glass on A/C system. Is it supposed to be bubbling in the glass or does that mean I need to add more or is it too full? I don't have gauges but I am going to buy some just waiting to have funds.
Nov 13, 2022 at 3:32 AM
RODNEY HALL2
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15 POSTS
Manual controls.
Nov 13, 2022 at 4:32 AM
STEVE W.
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15,113 POSTS
The viewport should show fluid and a few bubbles, but you need the compressor running to see those. The terminal is on the clutch. There is one that grounds through the engine and the other is where you can apply power, if they used a 2-pin plug one should show ground, apply power to the one with the black wire with a white stripe.
Nov 13, 2022 at 9:23 AM
RODNEY HALL2
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15 POSTS
Okay, clutch does kick on for 30 seconds. I didn't know both front and back A/C has to be on and on high speed to charge since there is only one compressor. I found out from an attack mechanic that does HVAC on trains and cars.
Nov 13, 2022 at 9:34 AM
STEVE W.
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15,113 POSTS
Okay, if it is turning on it's likely a low charge. I would get a gauge set and check the pressures. With a low charge the compressor kicks on, pulls in the refrigerant and starts working, then there isn't enough for it to continue, and it shuts off due to the low pressure.
This may give you some help in that. I would do a good leak check as it's a 22-year-old system. https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
Nov 13, 2022 at 10:49 AM
STEVE W.
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15,113 POSTS
Just checking to see if you had any luck so far.
Nov 16, 2022 at 9:06 PM
RODNEY HALL2
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15 POSTS
No, waiting on money I will try to fill it and if not, I'm going to take to shop next spring.
Nov 17, 2022 at 4:48 AM
STEVE W.
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15,113 POSTS
Understood. With the price and wait times on parts I'm looking at horses. LOL
Nov 19, 2022 at 4:51 AM
RODNEY HALL2
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15 POSTS
I am at that also.
Nov 19, 2022 at 2:11 PM
JACOBANDNICKOLAS
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110,175 POSTS
Hi,
I noticed we haven't heard from you for a few days. Have you been able to make any progress? We are interested in knowing.
If you have a chance, let us know.
Take care and we hope you have a good Thanksgiving.
Joe
Nov 22, 2022 at 7:25 PM
RODNEY HALL2
MEMBER
15 POSTS
No progress. i don't have money until the third to get refrigerant needed.
Nov 23, 2022 at 3:09 AM
JACOBANDNICKOLAS
CERTIFIED EXPERT
110,175 POSTS
Hi,
No problem. We just like to make sure people get things working again.
Have a great Thanksgiving and when you have a chance, let us know how things turn out for you.