Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Heating, ventilation, air conditioning system | Air conditioning system with refrigerant R134a | Technical data | Checking pressures on vehicles | Checking systems with an expansion valve and reservoir (with internally regulated air conditioner compressor)

Checking systems with an expansion valve and reservoir (with internally regulated air conditioner compressor)

Note

t	Connecting air conditioner service station → Chapter.

t	Observe the test prerequisites → Chapter.

–	Raise engine speed to 2,000 rpm.

–	Observe manifold gauge.

Note

The switch pressures and the versions of switches in the refrigerant circuit are vehicle-specific.

Pressures must be measured at the service connections; the fitting locations of these connections are vehicle-specific.

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