My A/C seemed to have stopped working (again), and this time it's because the clutch won't kick in for some electrical reasons (instead of a refrigerant leak or a burnt fuse).

I'm pretty sure my relay is new... so what else could cause my A/C clutch to not turn on?

The thermoswitch? The logicon? How can I test these without taking my interior apart?

 

Check your room fuse.

Check your pressure.

 

As I said, already did both. My clock and my cigarette lighter are working, so the fuse is good, and I've still got good pressure in the system. NTM that I jumpered the pressure switch and the clutch still wouldn't come on. But I hit the clutch with some juice straight from the battery and it turned on just fine, so it's an electrical issue of some sort (somewhere between the compressor wire and the logicon).

 

The FSM says my relay is bad because I've got voltage on the YELLOW/RED wire. Glad it's a cheap part instead of a major PITA to check... even if it's a part I already bought.

 

I found my old relay, installed it, and it works again. Stupid crappy replacement parts.