A/C clutch on off, not staying on?

JAMIE CRIDER

MEMBER
2012 FORD FUSION
3.0L
V6
2WD
AUTOMATIC
165,000 MILES

A/C pressure is good, not high or low. Radiator fan is good but not coming on when A/C is on. I unplugged high pressure switch and cooling fans come on, so I know fans are good. I'm thinking of a faulty low-pressure switch. I thought maybe the fan relay was not working right but I didn't see a cooling fan relay. Please help!

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,940 POSTS

A faulty low-pressure switch is your best bet, but we should run a CAN scan to see what comes up because it could be ab bd HVAC controller. you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon. here is a video to show you how. Also, let's check the fuses that run the system for power. This guide can help, and I have included the A/C system wiring diagrams so you can see which fuses to test and how the system works.

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

and to check the fuses,

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

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