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Refrigerant Pressure Sensor

WARNING: This page is about a different car, the 1996 Chevrolet Caprice. However, it is still accessible from the selected car via links, so may be relevant.

The refrigerant pressure sensor is attached to compressor and condenser hose. It senses high side pressures and sends a signal to PCM. PCM uses signal to control cooling fan operation. If high side pressure exceeds 429 psi (30.1 kg/cm2 ), PCM will disable compressor.

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