Mechanically-Driven A/C Compressor, Condenser, Service Connections, Expansion Valve, Condensation Water Drain

Fig 1: A/C Components Location (Components Outside Of Passenger Compartment - 2 Of 4)

Courtesy of AUDI OF AMERICA, LLC

Condenser
- With integrated receiver/dryer
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
Dryer Cartridge
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
A/C Compressor Regulator Valve -N280-
- To check, use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to the appropriate Wiring Diagram.
- Only for vehicles with a high-voltage system
  NOTE:
  Certain malfunctions at the A/C Compressor Regulator Valve -N280- (for example, a stuck valve or a short circuit in the coil) can lead to a complaint regarding the A/C compressor (A/C system is not cooling, the evaporator ices over, etc.). If the A/C Compressor Regulator Valve -N280- (and not the A/C compressor itself) is the cause, the A/C compressor can be serviced by replacing the A/C Compressor Regulator Valve -N280-. Refer to Refrigerant Circuit Components, Replacing or COMPONENTS, REPLACING .
  
  The A/C Compressor Regulator Valve -N280- is not available as a replacement part for all A/C compressors. If the A/C Compressor Regulator Valve -N280- is not available as an individual A/C compressor part (different versions), then the entire A/C compressor must be replaced if there is a complaint. Refer to the Parts Information.
A/C Compressor
- Mechanically driven, not on vehicles with a high-voltage system
- Allocation. Refer to the Parts Information.
- Overview. Refer to OVERVIEW - A/C COMPRESSOR POWER UNIT .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to Parts Information.
  NOTE:
  For vehicles with a 5-cylinder engine (Audi RS3), depending on the engine one or two ribbed belts are attached to the A/C compressor. Therefore a belt pulley with a single or double belt guide is on the A/C compressor. Refer to RIBBED BELT, REMOVING AND INSTALLING .
High Pressure Side Service Connection
- For measuring, discharging and charging
  CAUTION:
  Danger due to refrigerant coming out under pressure when there is a faulty valve in the refrigerant circuit.
  
  Danger of frost bite to skin and other parts of the body.
  - Only remove when the refrigerant circuit is empty; the connection is without a valve. Refer to A/C SYSTEM, GENERAL INFORMATION or GENERAL DESCRIPTION - REFRIGERANT CIRCUIT COMPONENTS .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to SERVICE CONNECTION DIFFERENCES, DEPENDING ON REFRIGERANT (R134A OR R1234YF) or Parts Information.
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
Refrigerant Circuit Pressure Sensor -G805-
- To check, use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function. Refer to the appropriate Wiring Diagram.
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
- Removing and Installing. Refer to Refrigerant Circuit Pressure Sensor -G805-, REMOVING AND INSTALLING .
  NOTE:
  Not always installed on vehicles with a high-voltage system Additional (and on the A3 e-tron Installed Differently) Components on Vehicles with a High-Voltage System (A3 e-tron). .
Low Pressure Side Service Connection
- For measuring and discharging
  CAUTION:
  Danger due to refrigerant coming out under pressure when there is a faulty valve in the refrigerant circuit.
  
  Danger of frost bite to skin and other parts of the body.
  - Only remove when the refrigerant circuit is empty; the connection is without a valve. Refer to A/C SYSTEM, GENERAL INFORMATION or GENERAL DESCRIPTION - REFRIGERANT CIRCUIT COMPONENTS .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to SERVICE CONNECTION DIFFERENCES, DEPENDING ON REFRIGERANT (R134A OR R1234YF) or Parts Information.
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
Condensation Water Drain
- Checking using the Vehicle Diagnostic Tester CONDENSATION DRAIN HOSE, CHECKING .
- Removing and Installing. Refer to CONDENSATION WATER DRAIN HOSE, REMOVING AND INSTALLING .
Expansion Valve
- Overview. Refer to OVERVIEW - CONDENSER, A/C COMPRESSOR, REFRIGERANT LINES AND EXPANSION VALVE .
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to Parts Information.