For 1990-2009 cars

The A/C pressure sensor is mounted on the discharge line of the A/C compressor hose assembly. The sensor's output to the powertrain control module is variable and is dependent upon pressure inside the line. A higher pressure results in a higher voltage output.

A/C pressure is constantly monitored in order to disengage the A/C clutch in case of the following aberrant pressures:

• | If the pressures are above 2968 kPa (430 psi).

• | If the pressures are below 255 kPa (35 psi).