Components Outside Passenger Compartment
Components Outside Passenger Compartment
Component Group 1
1 Coolant Fan 2 (V177)
• Different versions of the Coolant Fan (V7) and coolant fan 2 are installed depending on vehicle equipment.
• The request to switch the coolant fans on is transmitted by the Climatronic Control Module (J255) via the databus to the respective Engine Control Module (ECM). The respective ECM then activates the coolant fan and coolant fan 2 directly or via the coolant fan control module.
• For checking the radiator fan activation by the Climatronic control module refer to vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding".
• The respective ECM switches the coolant fan and coolant fan 2 (directly or via the coolant fan control module) continuously without stages to the desired output (depending on engine type). Check using vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding" and.
2 Cowl Panel Trim Seal
3 Cowl Panel Trim
4 Water Drain
• Removing, installing, checking and cleaning, refer to => [ Water Drain Hose ] Water Drain Hose.
5 Air Intake Unit
• For allocating air intake unit components, refer to => [ Air Intake Components ] Air Intake Components.
• Removing and installing, refer to => [ Air Intake Unit ] Air Intake Unit.
• For disassembling and assembling, refer to => [ Air Intake Unit ] Air Intake Unit.
• The following components are installed or removed in the air intake unit:
• Recirculation Door Motor (V113)
• Fresh Air Intake Duct Temperature Sensor (G89) (is not activated)
• Air Flow Door Motor (V71)
• Fresh Air Blower (V2)
• Fresh Air Blower Control Module (J126)
• Air intake unit water drain hose
6 Coolant pump (V50)
• Check functions, refer to => [ Heat Output, Checking ] Heat Output, Checking and Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.
• For checking the coolant pump activation by the Climatronic control module refer to Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.
• Removing and installing, refer to => [ Coolant Pump ] Coolant Pump.
7 Heat Regulating Valve Unit
• Consists of the Left Heat Regulating Valve (N175) and Right Heat Regulating Valve (N176).
• Check functions, refer to => [ Heat Output, Checking ] Heat Output, Checking and Vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.
• For checking the activation of the heat regulating valves by the Climatronic control module refer to Vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding" function.
• Removing and installing, refer to => [ Left and Right Heat Regulating Valves ] Service and Repair.
8 Forced Air Extractor
• Installed on the left and right B-pillars under the sill panel trim panel.
• The vent frame sealing lips must move freely and close automatically.
• To ensure proper passenger compartment ventilation, the air ducts must not be blocked by the trim behind the seats.
• Checking, refer to => [ Passenger Compartment Forced Air Extraction, Checking ] Testing and Inspection.
• Removing and installing, refer to => [ Passenger Compartment Forced Air Extraction ] Service and Repair.
9 Hood
10 Fresh Air Intake Grille
• Prevents foreign objects (such as leaves) from entering the A/C unit intake shroud.
• Make sure it is seated properly.
• Removing and installing, refer to => [ Fresh Air Intake Grille ] Fresh Air Intake Grille.
11 Coolant Fan (V7)
• Different versions of the coolant fan and coolant fan 2 - 1 - are installed depending on vehicle equipment level.
• Additional information on function and activation => - item 1 -.
Component Group 2
1 Condenser 2
• Right side of vehicle.
• May only be removed when refrigerant circuit has been discharged; bring vehicle to a workshop that has the necessary tools and in which the work can be performed accordingly by qualified personnel.
• Refrigerant lines, disconnecting and reconnecting, refer to => [ Refrigerant Lines, Disconnecting from Condenser and Connecting ] Refrigerant Circuit.
• Removing and installing, refer to => [ Condensers, Left and Right ] Refrigerant Circuit.
2 Outside Air Temperature Sensor (G17)
• The outside air temperature sensor measured value is evaluated by the Instrument Panel Control Module (J285) and transferred to the Climatronic control module via the Comfort CAN bus system.
• For checking the signal, refer to vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding"vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.
3 Union In Refrigerant Pipe (With Restrictor)
• The threaded connection may only be open when refrigerant circuit is empty; bring vehicle to a workshop that has the necessary tools and in which the work can be performed accordingly by qualified personnel.
• Restrictor, removing and installing, refer to => [ Restrictor ] Refrigerant Circuit.
4 High Pressure Side Service Connection
• On the left front of the engine in the direction of travel.
• Cap with seal, always install.
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.
5 Heated Rear Window (Z1)
• The command to heat the rear window is sent by the Climatronic control module via the Comfort CAN bus system. For checking the rear window defroster activation by the Vehicle Electrical System Control Module (J519) refer to vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding" (of Vehicle Electrical System Control Module).
• Notes on function of heated rear window, refer to => [ Heated Rear Window, Checking ] Testing and Inspection.
6 Label
• Indicates the type of refrigerant and capacity.
• The label is attached to the rear cross-member.
7 Low Pressure Side Service Connection
• Under the left engine compartment trim.
• Cap with seal, always install.
CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.
• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.
8 Reservoir
• Can only be removed when the refrigerant circuit is empty. Transfer the vehicle to a workshop that has the necessary tools and qualified personnel to perform the work.
• Removing and installing, refer to => [ Reservoir ] Refrigerant Circuit.
9 A/C Compressor
• For replacing the A/C compressor drive unit, refer to => [ A/C Compressor Drive Unit ] Description and Operation.
• Refrigerant Line, V8 engine, disconnecting from compressor and connecting, refer to => [ Refrigerant Lines, Disconnecting from Compressor and Connecting ] Refrigerant Circuit. Vehicles with V10 engine, refer to => [ Refrigerant Lines, Disconnecting from Compressor and Connecting ] Refrigerant Circuit.
• Compressor, V8 engine, removing and installing, refer to => [ Compressor ] Compressors. Vehicles with V10 engine, refer to => [ Compressor ] Compressors.
10 A/C Compressor Regulator Valve (N280)
• Installed inside the A/C compressor.
• Check activation and function, refer to => [ A/C Compressor Regulator Valve, Checking Switch-On Signal ] A/C Compressor Regulator Valve, Checking Switch-on Signal and vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.
11 Condenser 1
• Left side of vehicle.
• May only be removed when refrigerant circuit has been discharged; bring vehicle to a workshop that has the necessary tools and in which the work can be performed accordingly by qualified personnel.
• Refrigerant lines, disconnecting and reconnecting, refer to => [ Refrigerant Lines, Disconnecting from Condenser and Connecting ] Refrigerant Circuit.
• Removing and installing, refer to => [ Condensers, Left and Right ] Refrigerant Circuit.
12 A/C Pressure/Temperature Sensor (G395)
• Function, removing and installing, refer to => [ A/C Pressure/Temperature Sensor ] Service and Repair.
• For checking the measured values refer to vehicle diagnosis, testing and information system VAS 5051/ under "Guided Fault Finding".