I have a 2004 Volkswagon Passat with the 1.8T engine. The air conditioner is not working. I have checked the line pressure(s) and have around 75 psig on both the suction and discharge lines (appears the pressure has equalized across the compressor). I have checked voltage at the compressor connection and there is voltage going to the compressor. I have also checked continuity and the ground is good as well. I cannot locate a suction pressure switch to see if it is bad or not. Also, I have found the relay panel but cannot tell which relay controls the a/c. Any help would be appreciated. The clutch will not cycle at all. I have read that some models only have one wire going to the compressor and the compressor is grounded to the vehicle. To check for continuity they said to place one lead of the meter to the center of the compressor and the other lead to a good ground. I did this and had a good ground. The blower comes on but just blows ambient temperature air. See less