AC clutch will not engage

Tiny
SEBASTIAN_PERSONAL
  • MEMBER
  • 2008 CHRYSLER PACIFICA
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
I was planning to replace a new serpentine belt and a AC condenser today. So I replace a new serpentine belt due to the damage of the original belt that broke and shredded. After I replaced a new belt. It sounds like there was a clicking sound that just recently started right after I installed the new belt. Before trying to attempt replacing a condenser. I have noticed that the clutch is not engaging when recharging through the low pressure system with an AC dye/Freon rechargeable. My goal is to make sure to find the exact location of the leak before taking it apart. I tried to bypass manually through the relay and found unsuccessful with that procedure. I cannot seem to engage the AC clutch. Is there another way for me to diagnose if the clutch and the AC compressor is still good or defected?
Thursday, June 7th, 2018 AT 12:03 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

You can run a wire from the battery to the AC compressor to see if it engages.

I attached a wire diagram for you to view. At the relay, test for two powers with the key on. If there is power, then you need to check the pressure switches. They send a signal to the PCM to ground the control side of the relay.

Roy

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

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon
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Thursday, June 7th, 2018 AT 7:05 AM
Tiny
SEBASTIAN_PERSONAL
  • MEMBER
  • 77 POSTS
Is there a possibility you could direct me the location of the pressure switch? I am more a visual learner such as photos and images. Diagram is a bit complicated for me since I am no expert and only know the basics. Would love to expand and learned more. Thanks for your help.
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Thursday, June 7th, 2018 AT 2:07 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,665 POSTS
Hello,

Happy to help. It looks like the sensor is by the passengers side strut tower. Here is a diagrams that helps you see the locations.

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Sunday, June 10th, 2018 AT 12:21 PM

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