HELP with Toyota SR5 7/1993 AC

[bills86e]

My ac went warm and I noticed the Compressor Clutch was not engaging. I
removed the glove box, found the fuses & relays on right panel, removed the
10mm screw and pulled the assy off and found nothing wrong. I suspect a low
pressure switch as culpret and need help locating/accessing it to replace it.
Any help or info?

I seem out of my realm :
http://www.pnw4runners.com/pdf/AC_HEATE.PDF

Remove system and check on Bench?

TODAY............
I disconnected the single wire,black with white stripe compressor clutch wire connector between engine and the battery corner. With key on I had power, and when I started engine, two seconds pass and power quits.
Then I jumpered to compressor when running and system got cold, gauges read correct hi & low ect.

Why is sytem power shutting down/off?

 

[bills86e]

Anyone have info?

 

[bills86e]

I was going to give up , take to dealer. A last thought was how I'd look like a fool if the dealer found dry connections and charged me a grand to fix/diagnose. I unplugged the right sidewall white fuse holder, ecm/eec below that, all other electrical connectors in the open glove box area, and individually cleaned & applied di-electrical grease to all and reconnected as I went. One last attempt to start & look at the clutch. Give-Up Time!

WHEN I STARTED HER UP THE AC CLUTCH ENGAGED PROPERLY!!!!!! Whew!

This case is now closed, exactly what connector was oxidized is UNK.

ITS STILL WORKING!

Thank You, dielectrical grea$e.

 

[bills86e]

It stopped working again, today I found the root cause. It was the AMPLIFIER! I went to the junkyard to take apart the unit behind the glove box to see if I could figure how to not break it. I removed the 3 10mm screwsand the 10mm nut and tugged the plastic face. I then was able to lift the aplifier circuit board out after unplugging and unclipping the top small cover. 10 buc$. I plugged the CB into the connector when I got home and my system now turns on. Did same loosening to mine after learning how to get it out of the plastic facia box. I found my CB was all rusty/corroded. I drilled two small holes in the plastic box bottom so any new water (my winsheild cracked, so later on I replaced it) will drain. I applied di-electrical grease on the entire card and installed it. SOLVED
That cracked WS allowed water inside the cabin, and ruined the circuit board (amplifier).

 

[bills86e]

13 months later..........Still COLD!!!!

 

[fourwd1]

Thanks for the update !
Glad it's still working