Motor Vehicle Maintenance & Repair When I call for AC on the dash the clutch on the compressor doesn't engage. I disconnected the clip that connects the wire to the clutch and checked for voltage and there was none. People say that means I "need a new computer". But that seems drastic. Is there some fuse that can be blown? There are several things that can keep the compressor from engaging the heater-A/C mode control switch the low pressure cycling clutch switch high pressure cut-off switch Powertrain Control Module (PCM). One of the most common problems is a low refrigerant charge, the low pressure switch prevents the AC clutch from engaging when the system is low on refrigerant. Definitely check the fuses before replacing anything else. The video shows a page in the owner's manual that indicates that a fuse connects to the "A/C Controller" titled "MIRR HTD". It is a 10 Amp fuse. Here is an image from the same video. (The panel is being held sideways).

Another fuse is under the hood on the drivers side titled "A/C Clutch". Look at the lower left corner of the image. Those are the only two fuses that I could find. You should check them both and any others that might be related, such as the blower fuse, just in case before you move on to more expensive repairs.Cause - Improper plug-in procedure and/or the DC-In pins of the External Power Supply have become recessed 1. If the PC will not turn on but the External Power Supply's LED is lit (green or blue), first ensure the unit is being plugged in correctly. The safest way to plug in the PC is to plug the DC end of the External Power Supply into the unit, followed by the AC end from the wall into the External Power Supply. 2. If this process is being followed and the unit still will not turn on and/or the machine is turning off at random, check to ensure the 4 pins on the DC end of the External Power Supply do not seem recessed. For normal operation these pins should be almost to the top of the connector, but just barely below it (PSU FIX2.