No AC Compressor Kicking In
Thread Starter
Junior Member
Joined: Dec 2021
Posts: 1
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No AC Compressor Kicking In
So I just got a 2018 F150 XLT 5.0.
The heat is working fine, I can change it from defrost, top vents or foot vents just fine as well.
We took a trip to FL this weekend and discovered no AC. The air is warm or Hot depending on the temp settings.
I have checked the 10AMP fuse for the AC Clutch and it's fine, however I did notice the compressor does not engage. Does someone have a wiring diagram of this or can point out any other fuses that it may be? I'm wanting to check that before jumping to the relay or the compressor itself.
Also does forscan have the ability to see if the Compressor ON command is being sent?
Thanks for any and all help in advance!
The heat is working fine, I can change it from defrost, top vents or foot vents just fine as well.
We took a trip to FL this weekend and discovered no AC. The air is warm or Hot depending on the temp settings.
I have checked the 10AMP fuse for the AC Clutch and it's fine, however I did notice the compressor does not engage. Does someone have a wiring diagram of this or can point out any other fuses that it may be? I'm wanting to check that before jumping to the relay or the compressor itself.
Also does forscan have the ability to see if the Compressor ON command is being sent?
Thanks for any and all help in advance!
5 Year Member
Joined: Aug 2018
Posts: 9,083
Likes: 3,206
From: Kentucky
First thing I would check would be the refrigerant pressure sensor reading. If it's too high or low the compressor will not be commanded. FORScan is your friend in finding out what sensors and switches are saying.
