TommiM

iTrader: (19)

You say nothing powers up? Remove the a/c control panel and look at your connections on the back. check the wires on the connections and make sure they arent damaged/burnt/loose. You may have a ground issue. You say all your fuses are good, is power going through those fuses? If you have a test light you can check for that.

jameelrose

iTrader: (1)

trust me dude.. inspect the top right fuse holder slot real throughly.

jeremy52048

iTrader: (6)

thanks guys it was that dam 2nd the top right fuse! it had power and everything for some reason.. I removed it put it back in and I hear the air kick on!

jameelrose

iTrader: (1)

yup.... i had that exact.. problem.. the contacts are slightly burned right? the problem will come back... also the OEM fuses are sooooo cheap quality wise. put something better in there and slightly ben the contacts to its a tight fit. I tore apart my entire dash, stressing my self out trying to figure out what was wrong. I stuck a tester in the fuse and it tested fine, so i thought all was well.

richdegrave

iTrader: (1)

Was your heat working and all just the three buttons not working like the recirc button rear defrost and ac I am having the same problem everything else works except those buttons I am a little lost

jeremy52048

iTrader: (6)

no none of the 3 options work at ALL , the button would not light up at all, no air would work.
What exactly does not work ??

jeremy52048

iTrader: (6)

crazy thing is my ACD options all had turned on so i was ****ting my pants! i removed the 2nd fuse on the top right , put it back in and everything was back to normal , my acd option went back to tarmac

quickline23

iTrader: (11)

glad u figured it out its suppose to be a hot one this week

richdegrave

iTrader: (1)

Was that the fuse under the dash the 2nd right at the top green one

jeremy52048

iTrader: (6)

yeah thanks guys ! and yes it was the the 2nd the left of the top right green 30 fuse...
The two 7.5s

richdegrave

iTrader: (1)

Thanks I'll check it out for sure

sloow hatch

well my ac works when it wants 2, . .but all my buttons do work?

richdegrave

iTrader: (1)

My electric board with the 3 buttons went bad I got a used one off a buddy and put it in now back in business

project95gsx

Air conditioning issue Evo 8. The AC LED doesn't come on. The compressor relay works. I unplugged the ECU connector C121, turned the ignition on, and grounded pin 8 (pink). The clutch engaged, I rotated the clutch by hand and it hooked. I ohmed out the dual pressure switch, 2 ohms (closed, fine). I ohmed out the wires that say "OK".

What voltage should I expect to find on pins 4 and 5 on the AC ECU? Furthermore, what actually tells that LED to come on?

More info: the blend door does fine and the recirc LED comes on (like it's supposed to) at max cool on the hot/cold knob (still no AC LED). There's 4.7Kohms of resistance at the 2 air temp sensors.

Armyevo2003

iTrader: (2)

Well my AC doesn't work either and in the process of figuring it out. Bad refrigerant a plenty and the high pressure switch works as the radiator fan kicks on, the green light stays on and the blower blows hot air. I'm trying not to figure out why the clutch on the compressor won't kick in