Air Conditioning Pressure Sensor
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2002 Mercury Sable, 2002 Mercury Mountaineer, 2002 Mercury Grand Marquis, 2002 Mercury Cougar, and 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Air Conditioning Pressure (A/C pressure) sensor is located in high pressure (discharge) side of A/C system. A/C pressure sensor provides a voltage signal to PCM that is proportional to A/C pressure. See Fig 1. PCM uses this information for A/C clutch control, fan control and idle speed control.