626 Air Conditioning won't work - compressor has no power, why?

[michaelmiller85]

I just moved to southern Alabama and am needing to get my air conditioning fixed. I also need a wiring diagram for this thing. I have a 91 Mazda 626 dx, 5spd. With the air conditioning switch turned on, the light comes on and the engine RPM increase.

This is what I have figured:
- A/C fuse has power
- A/C Relay has power and works
- The additional cooling fan isn't getting power with a/c switch on
- Compressor is not getting power with a/c switch on
- I do know the fan and compressor work, after using small jumper wires to energize the compressor clutch and for the fan.

I'm lost, not sure what else to do.

Michael

 

[scord401]

I know this i an old thread but I'm having the same problem. I have no power to the pressure switch which in turn will not give power to the relay to power the compressor. Did you ever figure it out? I belive I have a break in a wire between the pjb and the relay...