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Condensation water hose, removing, checking
– Remove left and right center console trim and front center
console. Refer to⇒ Body Interior; Rep. Gr. 68 ; Removal and
Installation .
– Carefully fold back the carpet near the condensate drain hose
just enough until the drain is visible. Refer to⇒ Body Interior;
Rep. Gr. 68 ; Removal and Installation .
– Make sure the condensation water drain -B- is routed correctly
and is not block with dirt or constricted.
– Cover area beneath opening -D- for condensation water drain
-C-) with absorbent paper (so that any water present does not
flow under carpet).
– Remove condensation water drain -B-.
– Check condensation water drain of A/C unit -A- for soiling (e.g.
using a piece of wire).
– Check the distance between the insulation mat installed in the
center tunnel and the end of the drain hose -B - for the con‐
densation water -C- above the opening -D- in the floor panel.
There must be enough distance so that the water can drain
out of the hose -C-.
Installing
Installation is carried out in the reverse order while observing the
following.
– Install the condensation water drain -B- so that it is not twisted
or pinched.
– When installing the carpet, take special care that it does not
compress the condensation water drain -B-.
4.6
Heating Performance Of A/C System,
Checking
⇒ “4.6.1 Heating Performance, General Information“, page 93
⇒ “4.6.2 Heat Output Test Requirements“, page 94
⇒ “4.6.3 Heating Performance, Checking“, page 94
4.6.1
Heating Performance, General Informa‐
tion
Special tools and workshop equipment required
♦ Diagnostic operation system -VAS 5051 A- (or Vehicle Diag‐
nosis and Service System -VAS 5052- ).
Note
If coolant circuit is not completely bled after filling, air may accu‐
mulate in heater core of A/C unit, thus reducing heating perform‐
ance of A/C system, additional noises may occur or customer may
complain of different air temperatures flowing out of vents at driv‐
er's side and front passenger's side at the same setting.
Corrective action:
– Perform long road test at increased engine speed (at least 10
minutes, engine speed greater than 2500 RPM). Select a low
gear during the test to prevent excessive vehicle speed.
Audi TT 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 01.2011
4. Diagnosis and Testing
93
