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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.
2.8 A/C Components Inside Passenger Compartment, Left Side
1 - Left Front Seat Tempera‐
ture Sensor -G344- and Left
Front Heated Seat -Z45-
❑ Seat heater is not instal‐
led in all vehicles (op‐
tional equipment).
❑ Activation of seat heater
is displayed in Clima‐
tronic control module -
J255- , checking use
Vehicle diagnosis, test‐
ing and information sys‐
tem -VAS5051B- in the
"Guided Fault Finding".
❑ Seat heating, servicing,
refer to ⇒ Body Interior;
Rep. Gr. 74 ; Removal
and Installation .
2 - Accelerator Mechanism
❑ The kick-down switch-
off for the A/C compres‐
sor by Climatronic con‐
trol module -J255- (via
the Compressor Regu‐
lator Valve -N280- ) is
performed by request
from the engine control
module (data is ex‐
changed over the CAN-
Bus system). You can
read the current activa‐
tion status for the Com‐
pressor Regulator Valve
on the measured values
block for the A/C system
of the Climatronic con‐
trol module -J255- using
Vehicle diagnosis, test‐
ing and information sys‐
tem -VAS5051B- in the "Guided Fault Finding".
3 - Diagnostic Connection
❑ Perform On Board Diagnostic (OBD) on A/C system using Vehicle diagnosis, testing and information
system -VAS5051B- in the "Guided Fault Finding".
4 - Left Front Upper Body Outlet Temperature Sensor -G385- ( Right Front Upper Body Outlet Temperature
Sensor -G386- )
❑ Removing and installing, refer to
⇒ “5.13 Front Upper Body Outlet Temperature Sensors G385 / G386 “, page 143 .
❑ This temperature sensor is always installed on the driver's side. The Left Front Upper Body Outlet Tem‐
perature Sensor -G385- is installed in the air guide channel leading to the left instrument panel vent.
5 - Defroster Vent/Left Side Window
❑ Removing and installing, refer to⇒ Body Interior; Rep. Gr. 70 ; Removal and Installation .
6 - Instrument Panel Vent, Left
❑ Removing and installing instrument panel vents, refer to ⇒ “5.16 Instrument Panel Vents“, page 152 and
⇒ Body Interior; Rep. Gr. 70 ; Removal and Installation .
7 - Instrument Cluster Control Module -J285-
❑ With Outside Air Temperature Display -G106- .
❑ The Instrument Cluster Control Module evaluates the measured value of the Outside Air Temperature
Sensor -G17- and then transmits it via the Comfort databus to the Climatronic control module -J255- .
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
2. Description and Operation 59
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