Removing and installing air distribution flap control motor V428 with potentiometer G645 — AUDI

Removing and installing
air distribution flap control motor
V428
with potentiometer
G645
Heater unit and manually controlled air conditioner
Removing
Remove steering wheel
Rep. gr.
48
Steering wheel; Removing and installing steering wheel
.
Remove dash panel insert
Electrical system
Rep. gr.
90
Dash panel insert; Removing and installing dash panel insert
.
If fitted: Remove
entry and start authorisation control unit
J518
Electrical system
Rep. gr.
94
Entry and start authorisation; Overview - entry and and start authorisation system
.
Note
Right-hand drive vehicles: Remove dash panel
General body repairs, interior
Rep. gr.
70
Dash panel; Removing and installing dash panel
.
Remove footwell vent (driver side)
Chapter
.
Remove bolts
arrows
.
Note
The bolts are accessible from underneath behind the central tube.
Use a magnetic screwdriver to remove the bolts, or have a second mechanic hold a magnet over the bolt through the opening for the instrument cluster. If the bolt drops down, it will fall into the wiring duct pan where you cannot reach it (the dash panel would have to be removed to take out the bolt).
Detach
air distribution flap control motor
V428
item 4
and take control motor out between heater/air conditioning unit and central tube
3
through opening
2
for instrument cluster.
Unplug electrical connector
1
.
Installing
Installation is carried out in the reverse order; note the following:
Tightening torque
Chapter
“
Exploded view - heater and air conditioning unit
”
Note
Check operation of flaps and hinge mechanism before installing.
Make sure levers and shafts are seated correctly in actuator sockets.
The actuator socket in the control motor can only be fitted onto the actuating arm
2
in one position.
The actuator socket in the control motor must be opposite the actuating arm as shown.
Note
If the actuator socket and actuating arm are not opposite one another, the socket in the control motor must be turned. Observe notes
Chapter
.
Position control motor on air distribution housing. The actuating arm must engage
arrow
in actuator socket
1
.
There must not be any play in the connection between the control motor and actuating arm.
Note
The control motor is not positioned correctly on the housing if the bolts cannot be fitted.
Route electrical wiring harness so that it cannot come into contact with moving components (e.g. control motor lever).
To check operation of control motor, connect an adapter cable
Chapter
, or use a test lead from
adapter set
V.A.G 1594C
to connect contacts
“5”
and
“6”
of control motor to a 12 V battery via a 5 A fuse.
Note
Turn control motor until it reaches a convenient position for installation. The direction of rotation can be reversed by interchanging positive and negative.
Interrogate event memory and erase any entries displayed; then perform
“Basic setting”
Vehicle diagnostic tester
(
“Guided Fault Finding”
).
As a final step, check operation of heater/air conditioner.