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Cant get 2002 Pontiac Sunfire Air to work from switch. App

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Can't get 2002 Pontiac Sunfire...
Can't get 2002 Pontiac Sunfire Air to work from switch. Appears to be a wiring/electrical problem?
Submitted: 7 years ago.Category: Pontiac
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Answered in 4 minutes by:
7/1/2010
Pontiac Mechanic: Brian Maxwell, Pontiac Technician replied 7 years ago
Brian Maxwell
Brian Maxwell, Pontiac Technician
Category: Pontiac
Satisfied Customers: 65
Experience: Many certifications for BCM,PCM,Ride control, and engine internel.
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Hello and Thank you for using justanswer my name isXXXXX you tried to jump over the low pressure switch? Its in the line where the small charge port is or on the accumulator(Can tube looking thing).
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Customer reply replied 7 years ago
yes, we can jump over the switch and get it the compressor to work. In fact, we even changed some kind of wiring pigtail thing...lol. My mechanic knows what that is. Hopefully this helps?
Pontiac Mechanic: Brian Maxwell, Pontiac Technician replied 7 years ago
Does the little ac light come on on the dash?
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Customer reply replied 7 years ago
Yes, he check the switch inside. It's getting power in and out of it. He said we're losing it somewhere between the inside switch and the compressor. He also mentioned that some kind of fan should come on when the switch is turned on but that's not coming on either.
Pontiac Mechanic: Brian Maxwell, Pontiac Technician replied 7 years ago
Have you checked all the fuses not just the ac fuse all of them, If its not a fuse than theres a Brake in the wire somewere between the control head and the low pressues switch. Im going to leave this question open for the other Experts one of them may know right off hand what it could be. Thank You
Brian
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Customer reply replied 7 years ago
Thanks, XXXXX XXXXX've check all fuses.
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago
Amedee
Amedee, Pontiac Technician
Category: Pontiac
Satisfied Customers: 27,113
Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
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Hello!

 

New Expert here!

 

Are we missing a signal from the computer to active the relay?

 

Do you need a wiring diagram?

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Customer reply replied 7 years ago
If i understood my mechanic correctly, that signal is there.
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago

Ok.. if you are getting a signal to the relay top active, then the relay should be sending a signal sending out power to the compressor... let me get you a wiring diagram.

 

 

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Customer reply replied 7 years ago
i have a diagram for the relay and one for the switches.
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago

Ok.. good... here is the diagram I have... lets be sure we are on the same page...If you are in fact getting a signal to active the relay, then you should have power coming out of the relay on the dark green wire.

 

graphic

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Customer reply replied 7 years ago
yes, this is the diagram i have
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago
Ok.. good... so are we getting power this dark green wire coming out of the relay?
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Customer reply replied 7 years ago
Yes, that is my understanding
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago
Ok.. so do we have power ot the AC compressor?
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Customer reply replied 7 years ago
no power at the compressor
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago
Ok.. so what we are going to need to do it go to the starter relay and check for power on this green wire. IF there is power on this green wire coming out of the relay and no power ot the AC compressor, then this wire is simply open or broke somewhere between the AC relay and AC compressor.
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Customer reply replied 7 years ago
we'll check this and i'll get back with you. Thanks,
Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago

I hope this helps! Please don't forget to hit the "accept" button if you have found my answer helpful. You can always accept my answer now, and repost back again later on if you have any more questions. If you want to discuss it some more just hit "reply", it's free to do so otherwise don't forget to hit "accept" and leave positive feedback if you found my answer helpful.

 

REGARDS

 

AMEDEE

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Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago

Hello!

 

I am just checking up on you. Did you have any further questions?

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Customer reply replied 7 years ago

Right now i'm waiting on my mechanic to trace down the a/c wires. He is very busy, so it may be up to a week before he has a chance to check the wiring.

 

Don't worry, i haven't forgotten.

 

Thanks,

 

Pontiac Mechanic: Amedee, Pontiac Technician replied 7 years ago
Ok... you can always accept my answer now and we can still continue to have our conversation if needed. Bonus and positive feedback and appreciated!
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Amedee
Amedee
Amedee, Pontiac Technician
Category: Pontiac
Satisfied Customers: 27,113
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Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector

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