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Air conditioning 2003 A8
Audi Air conditioning 2003 A8 User Manual
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Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Workshop Manual
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Air conditioning
Edition 09.2010
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Table of Contents
Default Chapter
1
Air Conditioning
1
Table of Contents
3
1 Safety Precautions When Working on Vehicles Fitted with an Air Conditioner and for Handling Refrigerant
7
Air Conditioning System
7
Safety Precautions
7
Draining Refrigerant Circuit
8
Working on Refrigerant Circuit
8
Further Information
9
Painting Work on Vehicles Fitted with an Air Conditioner
9
Note on Vehicles with Auxiliary Heater (Poor Heating Output)
10
2 Notes on General Repairs
10
Notes on Air Conditioner Self-Diagnosis
11
Electrical Checking of Air Conditioner Components
12
General View of Components
14
3 Servicing Refrigerant Circuit
14
Checking Pressure Signal from High-Pressure Sender G65
16
Removing and Installing Air Conditioner High-Pressure Sender G65
16
O-Rings for Refrigerant Circuit
19
Detaching Compressor from Holder/Attaching on Vehicles with 6-Cyl. Engine, 8-Cyl. MPI Engine
20
Or 8-Cyl. Diesel Engine
20
Checking Activation Signal for Air Conditioner Compressor Regulating Valve N280
22
4 Replacing Compressor Pulley
25
Replacing Pulley
25
Detaching Pulley from Compressor/Re-Attaching
26
Replacing Pulley
27
Detaching Pulley from Compressor/Re-Attaching
29
5 Components for Control and Regulation of Air Conditioner Not Located in Passenger Compartment
32
Components Not Located in Passenger Compartment
33
Dust and Pollen Filter with Activated Charcoal Filter Element
37
Removing and Installing Dust and Pollen Filter
37
Cleaning Air Conditioner Evaporator
38
Removing and Installing Air Quality Sensor G238
41
Mode of Operation of Air Quality Sensor G238
42
Checking Air Quality Sensor G238
43
Checking and Cleaning Plenum Chamber Water Drain
47
Checking Vent Frame
47
Removing and Installing Intake Housing with Air Flow Flap
48
Permitted Unless Authorised by AUDI AG. AUDI AG Does Not Guarantee or Accept any Liability
51
Removing and Installing Air Flow Flap Control Motor V71 with Potentiometer G113
51
Preparing Adapter Cables for Control Motor Actuation
53
Removing and Installing Air Recirculation Flap Control Motor V113
53
Removing and Installing Fresh Air Intake Duct Temperature Sensor G89
53
With Respect to the Correctness of Information in this Document. Copyright by AUDI AG
53
Removing and Installing Cover with Air Recirculation Flap
58
Removing and Installing Fresh Air Blower V2
60
Removing and Installing Fresh Air Blower Control Unit J126
61
Removing and Installing Pump Valve Unit
61
Operation of Solar Roof
66
6 Heated Windscreen
69
Operation of Heated Windscreen
69
Checking of Heated Rear Window Z1
71
7 Electrical Checking of Components Actuated by the Air Conditioner
71
Checking of Heated Seats and Seat Ventilation
72
Checking Fuel-Driven Supplementary Heater
74
Checking Actuation of Heated Windscreen Z2
75
Checking Electric Supplementary Heater for Rear Footwell
75
8 Components for Control and Regulation of Air Conditioner Located in Passenger Compartment
76
Components Located in Passenger Compartment
77
Removing and Installing Left Centre Vent Control Motor V110
82
Removing and Installing Centre Vent Temperature Sender G191
85
Removing and Installing Right Centre Vent Control Motor V111
85
Removing and Installing Front Operating and Display Unit, Climatronic Control Unit J255
86
Removing and Installing Sunlight Penetration Photosensor G107
86
Removing and Installing Temperature Sensor Blower V42
86
Removing and Installing Rear Left Footwell Heater Element Z42 / Rear Right Footwell Heater Element Z43
89
Removing and Installing Rear Left Centre Console Temperature Sensor G311 and Rear Right Centre Console Temperature Sensor G312
90
Removing and Installing Rear Left Vent Warm Air and Cold Air Flap Control Motor V220
91
Removing and Installing Rear Climatronic Operating and Display Unit E265
93
Removing and Installing Rear Right Vent Warm Air and Cold Air Flap Control Motor V221
93
Removing, Checking and Installing Condensation Drain Hose
96
Air Conditioning Unit Components Located in Passenger Compartment
98
Removing and Installing Defroster Flap Control Motor V107
99
Removing and Installing Centre Vent Control Motor V102
101
Removing and Installing Front Left Defroster and Chest Vent Shut-Off Flap Control Motor V200
103
Removing and Installing Front Right Defroster and Chest Vent Shut-Off Flap Control Motor V199
105
Removing and Installing Left Footwell Flap Control Motor V108
107
Removing and Installing Right Footwell Flap Control Motor V109
109
Removing and Installing Temperature Flap Control Motor V68
111
Removing and Installing Left Vent Temperature Sender G150
112
Removing and Installing Right Vent Temperature Sender G151
112
Protected by Copyright. Copying for Private or Commercial Purposes, in Part or in Whole, Is Not
113
Removing and Installing Evaporator Output Temperature Sender G263
113
Removing and Installing Rear Left Vent Control Motor V218 and Rear Right Vent Control Motor V219
114
Preparation for Heat Exchanger Removal
117
9 Removing and Installing Heat Exchanger of Air Conditioning Unit
117
Removing and Installing Right (Front Passenger Side) Heat Exchanger
118
Removing and Installing Left (Driver Side) Heat Exchanger
122
Air Intake and Air Routing in Air Conditioning Unit
124
10 Block Diagram of Air Distribution System
124
Air Routing and Air Distribution in Passenger Compartment
126
11 Checking Cooling Output of Air Conditioner
128
Prerequisites for Checking Cooling Output
128
Checking Cooling Output
129
Measures to be Taken if Readout Does Not Match Specification
134
Measures to be Taken in the Event of Temperature Increase Downstream of Evaporator
136
12 Checking Heat Output of Air Conditioner and Operation of Pump Valve Unit
138
Checking Operation of Pump Valve Unit
138
13 Servicing Refrigerant Circuit
141
Detaching Refrigerant Lines at Compressor/Attaching
144
Removing and Installing Compressor (Basic Information)
146
Removing and Installing Compressor (on Vehicles with 8-Cyl. FSI Engine)
147
Detaching Compressor from Holder/Removing and Installing
155
Engine)
155
Removing and Installing Compressor (on Vehicles with 10-Cyl. Engine, Audi S8)
159
Checking/Replacing Compressor Drive Unit
167
Unfastening and Tightening Compressor Drive Shaft
168
Detaching Drive Plate with Overload Safeguard/Attaching
169
Removing and Installing Compressor Drive Shaft
169
Checking Concentricity of Drive Plate with Overload Safeguard/Adjusting
170
Unscrewing Drive Plate from Compressor/Screwing on
170
Removing and Installing Drive Plate with Rolling Bearing
171
Detaching Refrigerant Lines from Condenser/Re-Attaching
172
Removing and Installing Condenser
173
Removing and Installing Restrictor
174
Removing and Installing Reservoir
175
Detaching Refrigerant Lines at Evaporator Connection/Attaching
177
Removing and Installing Evaporator
179
Capacities
181
Starting up Air Conditioner after Charging Refrigerant Circuit
183
Removing
185
14 Removing and Installing Air Conditioning Unit
185
Installing
186
15 Dismantling and Assembling Air Conditioning Unit
189
Removing and Installing Covers in Plenum Chamber, Fresh Air Blower and Evaporator
189
Dismantling and Assembling Bottom Part of Housing and Air Distribution Housing
193
Dismantling and Assembling Air Distribution Housing
194
4
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Audi Air conditioning 2003 A8 Specifications
General
Brand
Audi
Model
Air conditioning 2003 A8
Category
Air Conditioner
Language
English
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