A3 Mk1: Heating, ventilation, air conditioning system
Also for this vehicle: A3 (8PA) L4-2.0L DSL Turbo (CBEA) (2011), A3 (8PA) L4-2.0L Turbo (CCTA) (2011), A3 L4-2.0L DSL Turbo (CBEA) (2010), A3 L4-2.0L Turbo (BPY) (2006), A3 L4-2.0L Turbo (CBFA) (2008), A3 L4-2.0L Turbo (CCTA) (2010), A3 Mk2, A3 Quattro (8PA) L4-2.0L Turbo (CCTA) (2011), A3 Quattro L4-2.0L Turbo (CBFA) (2009), A3 Quattro L4-2.0L Turbo (CCTA) (2010), A3 Quattro V6-3.2L (BUB) (2008), A3 Quattro V6-3.2L (CBRA) (2009).
Steering & suspension
Body & interior
Engine
Transmission
General
Heating & A/C
Choose Sections to see everything in a chapter, or a chapter title to start at its first page.
- 06Heating, ventilation, air conditioning systemHeating, ventilation, air conditioning system: Sections
Heating, air conditioner100 pages
Self diagnosis, V.A.G Inspection Service27 pages
Air conditioner self-diagnosis6 pages
- Connecting vehicle diagnosis, measurement and information system VAS 5051 or fault reader V.A.G 1551 and selecting function
- Interrogating fault memory
- Fault table
- Final control diagnosis
- Basic setting
- Erasing fault memory, ending output
Encoding operating and display unit3 pages
Perform electrical check at radiator fan control unit -J2934 pages
- Electrical check of rear window heating
Heating29 pages
Servicing heating23 pages
- Dash panel vents and air ducts
- Removing and installing centre dash-panel vents
- Making an auxiliary tool for dismantling the dash panel vents
- Removing and installing "left" and "right" dash panel vent
- Removing and installing windscreen defroster vent
- Checking vent frame
- Removing and installing air duct to defroster vent
- Heating, heater control and air ducts
- Removing and installing heater control
- Detaching and fitting Bowden cables from/on heater control
- Connection diagram for Bowden cables to the heater control
- Connection diagram for Bowden cables on the heater control
- Removing, installing and adjusting Bowden cables from/on the heater control
- Replacing the bulb for heater control
- Removing and installing fresh air blower -V2
- Removing and installing series resistor -N24 for fresh air blower
- Removing and installing positioning motor for fresh/recirculated air flap -V154
- Checking the function of the positioning motor for fresh/recirculated air flap -V154 and switch -E159
- Removing and installing footwell vent
- Removing and installing dust and pollen filter
- Connection diagram for vacuum hoses for actuating the refrigerant shut-off valve
- Notes on heater in vehicles with map-controlled heating
Servicing electrical additional heater - Vehicles with TDI engine2 pages
Air conditioner44 pages
- Safety precautions when working on cars with air conditioners and when handling refrigerant
Notes on general repairs2 pages
Repairing refrigerant circuit5 pages
- Air conditioner pressure switch -F129
- Remove and install High-pressure sensor -G65
- O-ring seals for refrigerant circuit
- Detach and re-attach compressor from/to bracket (4 cyl. petrol engine)
- Detach and re-attach compressor from/to bracket (4 cyl. petrol engine)
Repairing the air conditioner magnetic clutch -N253 pages
Components for the control and regulation of the air conditioner (in the engine compartment)5 pages
Components for air conditioner control and regulation (in the passenger compartment)15 pages
- Removing and installing operating and display unit -E87
- Removing and installing blower control unit -J126
- Removing and installing footwell vent temperature sender -G192
- Removing and installing centre vent temperature sensor -G191
- Removing and installing fresh air blower -V2
- Removing and installing sunlight penetration photosensor -G107
- Removing and installing footwell vent
- Removing and installing footwell/defroster flap positioning motor -V85
- Removing and installing temperature flap positioning motor - Remove and install -V68
- Removing and installing central flap positioning motor -V70
- Removing and installing dash panel temperature sensor -G56
- Removing and installing dash panel temperature sensor blower -V42
- Removing and installing fresh air intake temperature sensor -G89
- Removing and installing air flow flap positioning motor -V71
- Checking air conditioner refrigeration capacity
Servicing electrical additional heater - Vehicles with TDI engine 06.94 ä2 pages
Removing and installing air conditioner (complete)2 pages
Dismantle and assemble air conditioner (version 1)2 pages
Dismantle and assemble air conditioner (version 2)4 pages
Air conditioner with refrigerant R134a › Air conditioner201 pages
Warning instructions when working on vehicles with high-voltage system3 pages
General information on air conditioning systems42 pages
- General notes
- Introduction
- Safety measures for vehicles with start/stop system
- Other reference material
Principles of air conditioning systems4 pages
- General work safety
- Product properties
- Handling refrigerant
- Handling pressure vessels
- Safety regulations for working with extraction and charging systems
- Safety measures for working on vehicles with air conditioning system and for handling refrigerant R134a
- Before using air conditioner after system has been re-charged
General information on refrigerant circuit47 pages
- Components of refrigerant circuit
Layout of components of refrigerant circuit and their influence on high-pressure and low-pressure sides16 pages
- Mechanically driven air conditioner compressor
- Electrically driven air conditioner compressor for vehicles with a high-voltage system
- Condenser
- Evaporator
- Reservoir
- Restrictor
- Receiver
- Expansion valve
- Expansion valve with refrigerant shut-off valve 2 for hybrid batteryN517
- Refrigerant shut-off valve 1 for hybrid batteryN516
- Refrigerant line with internal heat exchanger
- Quick-release couplings on refrigerant line
- O-rings
- Pipes and hoses of refrigerant circuit
- High-pressure safety valve
Design of refrigerant circuit3 pages
- Refrigerant circuit with electrically driven air conditioner compressor (with and without battery cooling module)
Connections for quick-release coupling in refrigerant circuit3 pages
Switches and senders in refrigerant circuit and related connections11 pages
- High-pressure switch for air conditioning systemF23
- High-pressure switch for magnetic clutchF118
- Low-pressure switch for air conditioning systemF73
- Connections with valve for refrigerant circuit switches
- Air conditioning system pressure switchF129
- High-pressure senderG65 and pressure sender for refrigerant circuitG805
- Refrigerant pressure and temperature senderG395
- Air conditioner compressor regulating valveN280
- Air conditioning system compressor speed senderG111
- Refrigerant temperature senderG454
Electrical components not installed in refrigerant circuit2 pages
Pressures and temperatures in refrigerant circuit3 pages
Tests and measurements performed with pressure gauge2 pages
Air conditioner service and recycling units3 pages
- Repair notes for refrigerant circuit
Laws and regulations4 pages
Refrigerant circuit22 pages
- Important repair notes for air conditioning systems
- Converting refrigerant circuits from refrigerant R12 to refrigerant R134a
Working with the air conditioner service station9 pages
- Important notes for working with the air conditioner service station
- Connecting air conditioner service station for measuring and testing
- Discharging refrigerant circuit with air conditioner service station
- Evacuating refrigerant circuit with air conditioner service station
- Charging refrigerant circuit with air conditioner service station
- Starting up air conditioner after charging
- Pouring refrigerant into reservoir (charging cylinder or storage vessel) of air conditioner service station
- Discharging air conditioner service station
Blowing out refrigerant circuit with compressed air and nitrogen2 pages
Flushing (cleaning) refrigerant circuit with refrigerant R134a4 pages
Tracing leaks in refrigerant circuit4 pages
Problems with refrigerant circuit4 pages
Connecting air conditioner service station6 pages
- Connecting air conditioner service station on vehicles with a connection on the low and high-pressure end of the refrigerant cir
Connecting air conditioner service station on vehicles with no connection on the low-pressure end of the refrigerant circuit4 pages
Checking pressures15 pages
Checking pressures in refrigerant circuit with air conditioner service station (with ignition switched off)4 pages
Checking pressures on vehicles with a restrictor and reservoir (with internally regulated air conditioner compressor)2 pages
Checking pressures on vehicles with an expansion valve and receiver (with internally regulated air conditioner compressor)2 pages
Checking pressures on vehicles with restrictor, reservoir and air conditioner compressor regulating valveN280 (with externally r2 pages
Checking pressures on vehicles with expansion valve, receiver and air conditioner compressor regulating valveN280 (with external2 pages
Checking pressures on vehicles with an electrically driven air conditioner compressor (vehicles with a high-voltage system)2 pages
Renewing components of refrigerant circuit8 pages
Renewing components7 pages
- Leaking or damaged components (except air conditioner compressor, reservoir or receiver)
- Leaking or damaged components (except air conditioner compressor, reservoir or receiver)
- Renewing air conditioner compressor without the need for refrigerant circuit cleaning
- Renewing air conditioner compressor on account of leakage or internal damage
- Renewing receiver or reservoir and restrictor after cleaning refrigerant circuit
- Renewing receiver or reservoir without the need for refrigerant circuit cleaning
- Renewing dryer cartridge/desiccant bag without the need for refrigerant circuit cleaning
Capacities for refrigerant R134a, refrigerant oil and approved refrigerant oils43 pages
Capacities for refrigerant R134a20 pages
- Capacities for Audi A1 (8X_) 2011 ?
- Capacities for Audi A2 (8Z_) 2001 ?
- Capacities for Audi A3 (8L_) 1997 ? and Audi TT (8N_) 1999 ?
- Capacities for Audi A3 (8P_) 2004 ?, Audi Q3 (8U_) 2012 ?
- Capacities for Audi TT (8J_) 2007 ?
- Capacities for Audi 80 (8A_/8C_), Audi Coupé (8B_), Audi Cabriolet (8G_) ? 2002
- Capacities for Audi A4 (8D_) 1995 ?
- Capacities for Audi A4 (8E_) 2001 ?, Audi A4 Cabriolet (8H_) 2003 ?
- Capacities for Audi A4 (8K_) 2008 ?, Audi A5 Coupé and Sportback (8T_) 2008 ?, Audi Q5 (8R_) 2008 ?, Audi A5 Cabriolet (8F_) 200
- Capacities for Audi 100 / Audi A6 (4A_) ? 1998
- Capacities for Audi A6 (4B_) 1998 ? and Audi allroad (4B_) ? 2005
- Capacities for Audi A6 (4F_) 2005 ?
- Capacities for Audi A6 (4G_) 2011 ?, Audi A7 (4G_) 2011 ?, Audi A6 hybrid (4G_) 2012 ?
- Capacities for Audi V8 (4C_) ? 1994
- Capacities for Audi A8 (4D_) 1994 ?
- Capacities for Audi A8 (4E_) 2003 ?
- Capacities for Audi A8 (4H_) 2010 ?, Audi A8 hybrid (4H_) 2012 ?
- Capacities for Audi Q7 (4L_) 2006 ?
- Capacities for Audi R8 (42_) 2008 ?
Approved refrigerant oils and refrigerant oil capacities22 pages
- Approved refrigerant oils
- Refrigerant oil capacities
- Capacities for Audi A1 (8X_) 2011 ?
- Capacities for Audi A2 (8Z_) 2001 ?
- Capacities for Audi A3 (8L_) 1997 ? and Audi TT (8N_) 1999 ?
- Capacities for Audi A3 (8P_) 2004 ?, Audi Q3 (8U_) 2012 ?
- Capacities for Audi TT (8J_) 2007 ?
- Capacities for Audi 80 (8A_/8C_), Audi Coupé (8B_), Audi Cabriolet (8G_) ? 2002
- Capacities for Audi A4 (8D_) 1995 ?
- Capacities for Audi A4 (8E_) 2001 ?, Audi A4 Cabriolet (8H_) 2003 ?
- Capacities for Audi A4 (8K_) 2008 ?, Audi A5 Coupé and Sportback (8T_) 2008 ?, Audi Q5 (8R_) 2008 ?, Audi A5 Cabriolet (8F_) 200
- Capacities for Audi 100 / Audi A6 (4A_) ? 1998
- Capacities for Audi A6 (4B_) 1998 ? and Audi allroad ? 2005
- Capacities for Audi A6 (4F_) 2005 ?
- Capacities for Audi A6 (4G_) 2011 ?, Audi A7 (4G_) 2011 ?, Audi A6 hybrid (4G_) 2012 ?
- Capacities for Audi V8 (4C_) ? 1994
- Capacities for Audi A8 (4D_) 1994 ?
- Capacities for Audi A8 (4E_) 2003 ?
- Capacities for Audi A8 (4H_) 2010 ?, Audi A8 hybrid (4H_) 2012 ?
- Capacities for Audi Q7 (4L_) 2006 ?
- Capacities for Audi R8 (42_) 2008 ?
Test equipment and tools7 pages
List of testers, tools and materials4 pages
- Tools and materials available from regional sales centre or importer
- Commercially available tools and materials
- Improvised tools