Audi TT - Page 131

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– Remove Air Flow Door Motor -A- from air intake shroud.
– Mark connector to Air Flow Door Motor and remove it.
Note
♦ The connection between the airflow door motor gears and the
gears on the back pressure door is designed so the airflow
door motor can be removed easily only in the “fresh air oper‐
ation“ position.
♦ If motor is found in a different position and can no longer be
moved, motor cannot be simply pulled off, rather it must be
loosened first with great force from mounting points -B-, en‐
sure that toothed gear -C- is not damaged when doing this.
Installing
Note
♦ The airflow door motor is delivered as a replacement part in
“fresh air operation“ position. It can only be placed on the back
pressure door toothed gear when toothed gear -A- contacts
stop -B-. If an airflow door motor was removed in a different
position or activated in the removed state, it cannot be instal‐
led.
♦ If the gear -A- on the airflow door motor is not in -B- “fresh air
operation“, then connect motor via accompanying connector
to the vehicle wiring harness. Then switch on ignition and se‐
lect “Defrost“ operating mode on the Climatronic control mod‐
ule -J255- A/C (heater) control head (positioning motor moves
to “fresh air operation“ stop -B-).
♦ If positioning motor terminals 5 and 6 are connected to via a
5 A fuse to a 12 volt battery, e.g. with an adapter cable
⇒ “1.7 Adapter Cable for Activating Control Motors“, page 30
or line from the Connector Test Kit -V.A.G 1594 C- , it moves
to stop in one direction. The direction of rotation is changed by
exchanging the “positive“ and “negative“.
– Activate the motor until the toothed gear -A- reaches stop
“fresh air mode“ -B-.
– Switch off ignition if necessary.
– Before installing control motor, check back pressure door
bearing in air intake shroud and position of toothed gear -C-
(back pressure door is open, fresh air mode).
– Connect airflow door motor -V71- to vehicle wiring harness
(make sure connectors are allocated correctly).
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
5. Removal and Installation 127