A/C not working, could it be bad wiring?

2004 FORD RANGER

200,000 MILES • 3.0L • V6 • AUTOMATIC

JOSUE RODRIGUEZ2

MEMBER
23 POSTS

I believe it could be a bad wiring issue somewhere, but I unfortunately don't know how the system is wired. I checked out the relay and believe it's good, I think I might have a bad connection going to the relay as in the fuse box, but I don't know the exact wiring. Any help would be appreciated, thanks.

Sep 9, 2024 at 11:50 AM

STRAILER

✓Experienced Mechanic
55,233 POSTS

Sure, I can help you fix it, I would start by turning the system on and then check for power at the compressor clutch feed wire wht/gry.

Here is a guide to help:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Also jump the low-pressure switch to see if the system comes on because you may be low on refrigerant. Please go over this guide as well:

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

There are a hand full of fuses that need to be checked as well, here are the A/C system wiring diagrams so you can see how the system works and which fuses to check. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Sep 10, 2024 at 2:58 AM

STRAILER

✓Experienced Mechanic
55,233 POSTS

Anything with this problem? What happened?

Apr 29, 2025 at 4:57 AM

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