996NICK

Re: 91 944S2 A/C Climate Control System

How do I bypass the a/c switch to turn the compressor on. I would like to install a secondary switch that act's like the a/c switch on the climate control. The A/C compressor cluctch is not turning on even though all related parts check out. I have freon, hoses are good, pressure switch is good, relay is good, compressor is good and climate control panel is new.

I belive there to be a wiring issue between the climate control and the fuse box It's hot and humid out and I am trying to debug my a/c or climate control issues, so I need to bypass the climate control with a seperate a/c switch to turn on and off the a/c compressor.

Nick

931guru

There is a connector on the AC compressor. Apply 12 vDC to that wire and the clutch should engage.

cie_lab

There is a switch just by the drier under the headlight. Pull the two plugs off and jump them with a piece of wire or a paper clip. If your clutch does not come on then yeah, you've got an open circuit.

edit: oh yeah, you'll still need to turn on the switch at the dash.

Bri Bro

2nd that. It should takes less then five amps so it can be wired directly, but you need to fuse it.

BKiller

There is also a freeze protection on the box under the dash that can kill the signal to pull the relay open.

996NICK

Where is this freeze protection under the dash?

Nick

cwigg66

Anyone ever find an answer to this.. I don't have 12V from the AC button on the dash, so I am thinking either a bad relay or bad switch. Anyone dealt with this before?