A/C not working, clutch not engaging Options

[celicamike]

Hey guys, I'm hoping you can help me with this problem. I noticed that my A/C wasn't working, and discovered that the magnetic clutch does not engage when I press the button inside the cabin, even though the light comes on. So I got my digital voltmeter out and checked the wire going to the compressor. There is no voltage going to the compressor with the A/C button on or off, so I suspect a fuse or wiring problem. Do you know where the fuse is for this circuit? Have any of you experienced this problem before? I appreciate any help. Thanks

[trdproven]

Timing would be a problem if the ac clutch only engages sometimes like it gets warm when the idle doesn't kick in the clutch but I dont think that is the case here. I can think of the actual AC switch could be bad. BUUTTTTTT, From my experience I've seen the transistor as the culprit usually < this controls your fan switch which engages your ac. Way to know also is that your high settings on your fan stop working so you use medium and then low until it eventually doesn't work. I'm pretty confident that your transistor is bad. You can also idle your car and open your hood and listen for the clicks from the AC clutch but I doubt you can hear this if you can't even get the switch to work at all. If all toyotas are right, the transistor is under the dash of the passenger side, its pretty small. In general check your AC switch, fuses, transistor (could be burnt or seperated just like a fuse), and besides that we can get deeper into discussion later after you check them.