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Home >> Audi >> 2020 >> S4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Air Conditioning (Refrigerant R134A Servicing) (1 Of 2)) >> 87 Air Conditioning >> Pressures, Checking >> Checking Pressures On Vehicles With Expansion Valve And Receiver/Dryer (With Internally Regulated Compressor) >> General Information

General Information

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Connect the A/C service station. Refer to A/C SERVICE STATION, CONNECTING .

Observe the test requirements. Refer to PRESSURES, CHECKING .

-- With the ignition switched off, check the pressure in the refrigerant circuit (using the service station). Refer to REFRIGERANT CIRCUIT, CHECKING PRESSURE WITH SERVICE STATION .

The pressures with the ignition turned off meet the specifications.

-- Start the engine.

-- Bring the engine speed up to 2000 RPM.

-- Observe the pressure gauge of the service station.

NOTE:

The switch pressures and design of refrigerant circuit switches are vehicle-specific.

Pressures must be measured at service connections; component locations of these connections are vehicle-specific. Refer to Refrigerant Circuit .

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