Audi Air conditioning 2003 A8 Workshop Manual page 4

Audi A8 2003 ➤
Air conditioning - Edition 09.2010
7.4 Checking electric supplementary heater for rear footwell . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5 Checking actuation of heated windscreen Z2
8 Components for control and regulation of air conditioner located in passenger
compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 Components located in passenger compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Removing and installing left centre vent control motor V110
8.3 Removing and installing right centre vent control motor V111
8.4 Removing and installing centre vent temperature sender G191
8.5 Removing and installing sunlight penetration photosensor G107
8.6 Removing and installing temperature sensor blower V42
8.7 Removing and installing front operating and display unit, Climatronic control unit J255
8.8 Removing and installing rear left footwell heater element Z42 / rear right footwell heater
element Z43
8.9 Removing and installing rear left centre console temperature sensor G311 and rear right
centre console temperature sensor G312
8.10 Removing and installing rear left vent warm air and cold air flap control motor V220
8.11 Removing and installing rear right vent warm air and cold air flap control motor V221
8.12 Removing and installing rear Climatronic operating and display unit E265
8.13 Removing, checking and installing condensation drain hose . . . . . . . . . . . . . . . . . . . . . . . .
8.14 Air conditioning unit components located in passenger compartment
8.15 Removing and installing defroster flap control motor V107
8.16 Removing and installing centre vent control motor V102
8.17 Removing and installing front left defroster and chest vent shut-off flap control motor V200
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8.18 Removing and installing front right defroster and chest vent shut-off flap control motor V199
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8.19 Removing and installing left footwell flap control motor V108
8.20 Removing and installing right footwell flap control motor V109
8.21 Removing and installing temperature flap control motor V68
8.22 Removing and installing left vent temperature sender G150
8.23 Removing and installing right vent temperature sender G151
8.24 Removing and installing evaporator output temperature sender G263
8.25 Removing and installing rear left vent control motor V218 and rear right vent control motor
V219 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
9 Removing and installing heat exchanger of air conditioning unit . . . . . . . . . . . . . . . . . . . . 111
9.1 Preparation for heat exchanger removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
9.2 Removing and installing right (front passenger side) heat exchanger . . . . . . . . . . . . . . . . 112
9.3 Removing and installing left (driver side) heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . 116
10 Block diagram of air distribution system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
10.1 Air intake and air routing in air conditioning unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
10.2 Air routing and air distribution in passenger compartment . . . . . . . . . . . . . . . . . . . . . . . . . . 120
11 Checking cooling output of air conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
11.1 Prerequisites for checking cooling output
11.2 Checking cooling output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
11.3 Measures to be taken if readout does not match specification . . . . . . . . . . . . . . . . . . . . . . 128
11.4 Measures to be taken in the event of temperature increase downstream of evaporator . .
12 Checking heat output of air conditioner and operation of pump valve unit . . . . . . . . . . . . . . 132
12.1 Checking operation of pump valve unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
13 Servicing refrigerant circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
13.1 Servicing refrigerant circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
13.2 Detaching refrigerant lines at compressor/attaching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
13.3 Removing and installing compressor (basic information)
13.4 Removing and installing compressor (on vehicles with 8-cyl. FSI engine)
13.5 Detaching compressor from holder/removing and installing (on vehicles with 12-cyl.
engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
13.6 Removing and installing compressor (on vehicles with 10-cyl. engine, Audi S8) . . . . . . . . 153
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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.
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