Checking air recirculation flap control motor V113 - automatically controlled air conditioner — AUDI

Checking
air recirculation flap control motor
V113
- automatically controlled air conditioner
Note
Depending on the operating unit (
Climatronic control unit
J255
), the
air recirculation flap control motor
V113
on vehicles manufactured in 2010 may also be displayed as the
fresh air/air recirculation, air flow flap control motor
V425
or
fresh air and air recirculation flap control motor
V154
Vehicle diagnostic tester
,
“Guided Fault Finding”
.
Procedure
Remove glove box
General body repairs, interior
Rep. gr.
68
Shelves / trim panels; Removing and installing glove box
.
Switch on ignition.
Note
Operation of control motor is displayed in
“Read measured values”
function
Vehicle diagnostic tester
,
“Guided Fault Finding”
.
Set the rotary fresh air blower switch
3
to speed
“3”
.
Set the rotary air distribution switch
5
to
“Dash panel vents”
.
Fresh air/air recirculation button
4
not pressed.
Fresh air mode - lamp in button is off.
Air is drawn in from plenum chamber via fresh air intake.
Press the fresh air/air recirculation button.
Air recirculation mode - lamp in button is on.
Air is drawn in from area behind glove box (air recirculation mode).
Press the
“Defrost”
button
2
.
Lamp in button is on.
The lamp in the fresh-air/air recirculation button goes out, the fresh-air/air recirculation flap moves to the
“fresh-air mode”
position.
Note
If operation is not OK, check electronics in
Climatronic control unit
J255
and activation of air recirculation flap control motor
V113
Vehicle diagnostic tester
,
“Guided Fault Finding”
.
At present, the
“air recirculation mode”
function is cancelled automatically after switching the ignition on again.
If operation of fresh air/air recirculation flap is OK and windows mist up, check the following:
Dust and pollen filter for contamination
Chapter
Forced ventilation vents for passenger compartment
Chapter
Ingress of water into passenger compartment
Chapter
Fresh-air intake from plenum chamber and plenum chamber water drain
Chapter
Seals between individual components of fresh air intake and vehicle for damage and leaks
Activation of
air conditioner compressor regulating valve
N280
and operation of air conditioner
Chapter
“
Checking cooling output
”
Note
Under certain operating conditions, residual moisture in the refrigerant circuit may lead to the formation of ice at
N280
(and at the expansion valve). Such ice formation impedes the control of the air conditioner compressor. The evaporator is cooled down too much and ices up. Icing-up of the evaporator may be the cause of the windows misting up.