low freon
An air conditioner clutch will not engage without voltage. If it doesn't engage, the compressor will not turn.
See if hot wire hot with switch on.
It's either low on charge, has bad wiring, needs a new pressure switch or needs a new clutch.
The clutch pedal.
it might not have any hydrolic fluid in the clutch master cylinder to engage the cluth or your clutch might me shot and just won't engage at all meaning you need a new one (was there a smell in the car right before you couldn't use clutch? that might of been the clutch burning up). don't quote me on all that I'm just telling you what you can check.
Gear? That is what a clutch does. The clutch assembly which consists of the clutch disc and the pressure plate that applies the pressure to engage the clutch. The clutch on the front of an air conditioner pump is magnetic and engages metal to metal without a clutch disc between them.
If the clutch won't engage, the clutch disc or pressure plate has probably broke apart. If the clutch won't disengage, the clutch hydraulic fluid reservoir is empty because of a leak in the system.
In a word; no. However, the A/C compressor's clutch relies on your car's battery to properly engage, so one could say there is "a relationship".
Is to disengage and engage
bad clutch cable, or not enough oil on the clutch plates.
you need to bleed your clutch fluid
thats the relay to engage the a/c compressor clutch