AC compressor not turning on?

[The motor guy]

So today I noticed my ac wasn't working and it appears the ac compressor isn't cycling. Any ideas? I'm not too familiar with ac, but I know the compressor won't turn on if the system is low on Freon. I'm assuming it could have a leak anywhere? This is on my truck.

 

[Chris142]

Check for 12volts at the coil.I relace more than I can count due to failed coils on those trucks.

 

[The motor guy]

Originally Posted By: Chris142
Check for 12volts at the coil.I relace more than I can count due to failed coils on those trucks.


Do I need one of those clamp meters to check? I only have the probe style.

 

[Chris142]

Unplug the connection at the compressor. Start the truck,turn on the account and services what voltage your meter says is there. Should be near battery voltage 13.v so.

 

[Chris142]

Stupid spell check

 

[The motor guy]

As far as checking for voltage is concerned, is one prong going to be the negative and the other the positive?

 

[SHOZ]

If it has two prongs. Some only have the 12+ and use the compressor body for ground.

If it does have 12+, plug it in and with the engine running and AC on use a stick to push in on the center of the clutch. Of course be careful of the belts. If it kicks in then the clutch gap is off.