Ac not working, no power going to low pressure switch

2007 FORD F-150
110,000 MILES • V8 • 2WD • AUTOMATIC
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JEFFJ
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  • 36 POSTS
ac not working, no power going to low pressure switch. fuse seems to be good. can put power to compressor side of low pressure switch and it functions properly by all switches
Apr 9, 2011 at 1:28 AM
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CJ MEDEVAC
  • CAR REPAIR CONTRIBUTOR
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Hello,


Fuse # 14 supplies power to the cycling switch I would check it for power here is a guide and the air conditioner wiring diagrams so you can see how the system works and the fuse locations as well.

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

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Apr 15, 2021 at 2:33 PM
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DOCFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 18,828 POSTS
Use a meter on fuse see if there is power to and across fuse.

This guide can help as well.

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

Please run down this guide and report back.

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Apr 15, 2021 at 2:33 PM
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JEFFJ
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Thanks cj medevac the wiring diagram did the trick!!!
The problem was somehow about 7 inches from the low pressure switch, the blue and pink striped wire was broken internally!!!! I traced it down per the schematic. Made nice solder repair and customer is back chill n. Thanks guys maybe this lesson will help someone in the future!!!
Jeffj
Opelousas, la
Apr 15, 2021 at 2:33 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.