Here is what I have:
1992 4Runner
22R-E
5 Speed manual
What is wrong:
Air Conditioning doesn't work, but did the last time I drove the truck 2 months ago.
What's changed since then: Started cleaning the truck to sell it. Simlple Greened the engine, powerwashed. Compressor clutch does not engage.
What I've done so far: Visual inspection of engine bay. Checked all electrical and vaccum connections visually. Everything looks good. Check a/c switch on dash, LED doesn't work and never did. Took switch out, when I turn it on I have continuity on the two terminals I should. I have power up to the switch. Check CDS 1 and 2 relay, good. Checked fuses under driverside dash, good. Check engine bay fuses, good. Applied 12v+ power to compressor clutch magnet, clicks and engages.
At this point I'm not sure which direction to go. I was told by a friend that if the freon is low (pressure) that the system won't work. But this doesn't make sense, since the system needs to turn on the compressor to make pressure first, which it isn't doing. I'm not sure if I have a loose connection some where I'm missing, or a bad relay that is hidden I don't know about, bad A/C amplifier, or bad pressure switch.
I'm looking for the trouble shooting part of the Toyota manual on the board/online, or someone that has advice of what to look for or which direction to trouble shoot, the circuit. I have a copy of the circuit from the Toyota electrical book from the dealer, but it is hard to read, there are a lot of loops in the circuit where things are getting power from two places and fuses shown that I don't actually see on the truck where I have looked.
Thanks for the help, I'm really stumped right now, and at a dead end.
1992 4Runner
22R-E
5 Speed manual
What is wrong:
Air Conditioning doesn't work, but did the last time I drove the truck 2 months ago.
What's changed since then: Started cleaning the truck to sell it. Simlple Greened the engine, powerwashed. Compressor clutch does not engage.
What I've done so far: Visual inspection of engine bay. Checked all electrical and vaccum connections visually. Everything looks good. Check a/c switch on dash, LED doesn't work and never did. Took switch out, when I turn it on I have continuity on the two terminals I should. I have power up to the switch. Check CDS 1 and 2 relay, good. Checked fuses under driverside dash, good. Check engine bay fuses, good. Applied 12v+ power to compressor clutch magnet, clicks and engages.
At this point I'm not sure which direction to go. I was told by a friend that if the freon is low (pressure) that the system won't work. But this doesn't make sense, since the system needs to turn on the compressor to make pressure first, which it isn't doing. I'm not sure if I have a loose connection some where I'm missing, or a bad relay that is hidden I don't know about, bad A/C amplifier, or bad pressure switch.
I'm looking for the trouble shooting part of the Toyota manual on the board/online, or someone that has advice of what to look for or which direction to trouble shoot, the circuit. I have a copy of the circuit from the Toyota electrical book from the dealer, but it is hard to read, there are a lot of loops in the circuit where things are getting power from two places and fuses shown that I don't actually see on the truck where I have looked.
Thanks for the help, I'm really stumped right now, and at a dead end.
