Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2009TT S QUATTRO, 2D COUPEREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING (COUPE)
2009 Audi TT S Quattro, 2D Coupe
Air Conditioning (Coupe)
2009 Audi TT S Quattro, 2D CoupeSECTION Air Conditioning (Coupe)
- 87 Air Conditioning
- General Information
- A/C Compressor Belt Pulley, Replacement
- A/C System Control And Regulation Components Outside Passenger Compartment
- A/C System Control And Regulation Components Inside Passenger Compartment
- A/C System, Operating After Filling Refrigerant Circuit
- A/C And Refrigerant Safety Precautions
- A/C Air Distribution Housing Defroster Outlet Door
- Adapter Cable For Activating Control Motors
- Checking Electrical Components
- CLIMATRONIC Control Module -J255-
- Contact Corrosion
- Dryer Cartridge
- Dust And Pollen Filter With Activated Charcoal Insert
- Evaporator, Cleaning With Ultrasound A/C Cleaner
- Fresh Air Blower Control Module -J126- And Fresh Air Blower -V2-
- Painting Vehicles With A/C
- Performing Guided Fault Finding
- Refrigerant Circuit, Draining
- Refrigerant Circuit, Repairs
- Refrigerant Circuit, Servicing
- Refrigerant Safety Precautions
- Refrigerant Circuit O-Rings
- Refrigerant R134A
- Description And Operation
- Air Routing And Distribution In Passenger Compartment
- A/C Unit Components
- Refrigerant Circuit Components Overview
- Belt Pulley, DENSO A/C Compressor, Version 1
- Belt Pulley, DENSO A/C Compressor, Version 2
- Components Outside Of Passenger Compartment, Group 1
- Components Outside Of Passenger Compartment, Group 2
- A/C Components Inside Passenger Compartment, Left Side
- A/C Components Inside Passenger Compartment, Right Side
- Air Flow Door Motor -V71-, Function
- Refrigerant Circuit, Servicing
- Air Intake And Outlet Openings
- Air Guide In Evaporator Housing
- Air Guide In Air Distribution Housing
- High Pressure Sensor -G65- Signal
- Specifications
- Diagnosis And Testing
- A/C Compressor Regulator Valve -N280-, Checking Switch-On Signal
- A/C Unit, Checking Cooling Output
- Causes Of Odor
- Components Actuated By A/C System, Electrical Test
- Condensation Water Drain Hose, Checking
- Heating Performance Of A/C System, Checking
- Heated Seats, Checking
- High Pressure Sensor -G65-, Checking Pressure Signal
- Passenger Compartment Forced Air Extraction, Checking
- Plenum Chamber Water Drain, Checking And Cleaning
- Rear Window Defogger, Checking
- Wiring And Component Testing With Test Box VAG 1598A
- Removal And Installation
- A/C Compressor, Removing From Bracket - Engine Code(S): BPY, CCTA, CDMA & CETA
- A/C Compressor, Removing From Bracket - Engine Code(S): CEPB
- A/C Unit
- Air Intake Grille
- Air Intake Housing With Recirculating And Air Flow/Fresh Air Door
- Belt Pulleys
- CLIMATRONIC Control Module -J255-
- Door Motors
- Dust And Pollen Filter
- Fresh Air Blower Control Module -J126-
- Fresh Air Blower Control Module -J126- And Fresh Air Blower -V2-
- Fresh Air Intake Cover
- Front Upper Body Outlet Temperature Sensors -G385 - / -G386-
- Heater Core
- High Pressure Sensor -G65-
- Instrument Panel Vents
- Interior Temperature Sensor Fan -V42-
- Refrigerant Circuit Components
- A/C Compressor Refrigerant Lines
- A/C Compressor
- Condenser - Engine Code(S): BPY, CCTA, CDMA & CETA
- Condenser - Engine Code(S): CEPB
- Dryer Cartridge On Condenser
- Dryer Cartridge On MODINE Condenser
- Dryer Cartridge, On DENSO Condenser
- Evaporator
- Expansion Valve
- Fluid Reservoir
- Refrigerant Lines, Disconnecting And Connecting From Condenser
- Refrigerant Lines, Disconnecting And Connecting From Expansion Valve
- Sunlight Photo Sensor -G107-
- Temperature Sensors
- Disassembly And Assembly
- Special Tools
- General Information
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.