A/C Compressor Magnetic Clutch Shorted?

[bhg4life]

I'm trying to get my A/C set up after my 1JZ swap and everything seems to be fine except for the compressor magnetic clutch. I connected everything up as in this guide: http://supraforums.com/forum/showthread.php?t=219596&page=1. The A/C relay line does switch to 12v as its supposed to.

I tried it out and blew the A/C fuse. When I threw my multimeter on the lines to the magnetic clutch they read 0 ohms. I checked my 7M TSRM and the same diagnostic procedure for that says it should read 3 ohms.

Questions:
1) Am I doing this diagnostic procedure wrong?
2) If not, is it supposed to read this value?
3) If it is shorted, what kind of thing can cause this prior to me tearing everything out to get to it?

Thanks for any replies.

 

[tissimo]

I dont feel like looking through the thread to figure out what you connected. What did you connect. You simply need to connect the 7m Compressor clutch wire to Pin 9 on EA2 iirc (dont have the wiring in front of me)

 

[bhg4life]

That's what I did. The wiring looks fine, but the mag clutch doesn't engage even when you do it direct. The resistance from Pin 9 to ground is 0 ohms. When I connect it all up and engage the A/C the fuse blows.

Thx

I dont feel like looking through the thread to figure out what you connected. What did you connect. You simply need to connect the 7m Compressor clutch wire to Pin 9 on EA2 iirc (dont have the wiring in front of me)

 

[90T04]

You are exactly right, if you have a 0 ohms resistance across your coil its shorted!

Nothing you did would have caused it to short out, unless maybe it got physically hit or smashed, but then the pulley would be bent too...

 

[bhg4life]

Oh well, I guess I'll have to tear it all out and find out whats going on. The pulley doesn't wobble or anything and is runnong on the serp belt.

I have my 7M compressor still. Any parts like the clutch that are transferrable?

You are exactly right, if you have a 0 ohms resistance across your coil its shorted!

Nothing you did would have caused it to short out, unless maybe it got physically hit or smashed, but then the pulley would be bent too...