Pressure Relieve Valve On A/C Compressor, Checking

CAUTION:

There is a risk of frostbite through refrigerant. The pressure relief valve drains refrigerant when the engine is running and the refrigerant circuit pressure is too high.

Frostbite on the skin and other parts of the body is possible.

- Wear protective gloves.

- Wear protective eyewear.

- Turn the engine off.

Function: Protects the refrigerant circuit against excessive pressure
The pressure relief valve has operated when refrigerant oil is found nearby.

Check the pressure relief valve -1- on vehicles with A/C compressors by Denso and 6/10-cylinder engine.

Fig 1: Identifying Pressure Relief Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Check pressure relief valve -arrow- on vehicles with A/C compressor by Denso.

Fig 2: Identifying Pressure Relief Valve

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.