Audi Q7 2007 Repair Manual page 156

Audi Q7 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 04.2013
♦ On vehicles with "Basic" version A/C system, the control motor is moved only to its two end positions over
the activation period by the Climatronic Control Module - J255- front A/C control head, it is not possible to
detect malfunctions because of a missing potentiometer.
❑ Removing and Installing. Refer to
⇒ "9.32 Recirculation Door Motor V113 , Removing and Installing", page 166
19 - Fresh Air Intake Duct Temperature Sensor - G89-
❑ Only installed on vehicles with a "Comfort" version A/C system
❑ Removing and Installing. Refer to
⇒ "9.33 Fresh Air Intake Duct Temperature Sensor G89 , Removing and Installing", page 167
❑ For checking, use the Vehicle Diagnostic Tester via the "Guided Fault Finding" function.
20 - Condensation drain
❑ Condensation water drain valve, checking; condensation water drain hose, removing and installing. Refer
to ⇒ "9.37 Front Condensation Water Drain Hose, Checking, Removing and Installing", page 171
21 - Dust and Pollen Filter (with Activated Charcoal Filter Element)
❑ Follow the replacement intervals. Refer to the Maintenance Tables.
❑ With activated charcoal filter element. Refer to
⇒ "9.36 Dust and Pollen Filter with Activated Charcoal Filter Unit", page 170
❑ Removing and Installing. Refer to
Note
An Air Quality Sensor - J255- is also
installed on vehicles with a Clima‐
tronic Control Module - G238- front
A/C control head "Comfort" version.
Refer to
⇒ "5.5 Air Quality Sensor G238
Functionality", page 58
22 - Evaporator
❑ May only be removed when refrigerant circuit has been discharged. Bring the vehicle to a workshop that
has the necessary tools and in which the work can be performed accordingly by qualified personnel.
Refer to ⇒ Refrigerant R134a Servicing; Rep. Gr. 87 ; A/C System General Information (Refrigerant
R134a, Servicing; A/C System, General Information).
❑ To remove the evaporator, the A/C unit must be removed and disassembled. Refer to
⇒ "17.3 Front A/C Unit Evaporator, Removing and Installing", page 306
⇒ "18 Front A/C Unit, Disassembling and Assembling", page 307
❑ For cleaning the A/C system evaporator with Ultrasound A/C Cleaner - VAS6189- , refer to
⇒ "10.3 Front (and Rear) A/C System Evaporator, Cleaning, Using Ultrasound A/C Cleaner VAS6189A
", page 200 .
23 - Heat Exchanger in the Front A/C unit
❑ For removing and installing with the A/C unit installed, refer to
⇒ "9.18 Front Heater Core, Removing and Installing, A/C Unit Installed", page 134
❑ For removing and installing with the A/C unit removed, refer to
⇒ "17.2 Heater Core, Removing and Installing, with Front A/C Unit Removed", page 303
24 - Right Front Seat Temperature Sensor - G345- and Right Front Heated Seat - Z46-
❑ Seat heater (and seat ventilation) is not installed on all vehicles (optional equipment, introduction of seat
ventilation as a running change from MY 2010)
❑ The activation of seat heater and seat ventilation are displayed in measured value block of the Climatronic
Control Module - J255- front A/C control head. For checking, use the Vehicle Diagnostic Tester via the
"Guided Fault Finding" function.
❑ For servicing the seat heater (and seat ventilation), refer to ⇒ Body Interior; Rep. Gr. 74 .
❑ In vehicles with seat occupied sensor system, the seat heaters (and seat ventilation) for front passenger
seat and rear seats may be switched off after approximately 10 minutes, without an indicating display in
this measuring value block, if the control module in question (for example, Airbag Control Module - J234- )
detects the seat is unoccupied. Use the Vehicle Diagnostic Tester via the "Guided Fault Finding" function.
150
Rep. Gr.87 - Air Conditioning
⇒ "9.35 Dust and Pollen Filter, Removing and Installing", page 169
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and
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with respect to the correctness of information in this document. Copyright by AUDI AG.
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and the Parts Catalog.
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