Removing And Installing Fresh Air Blower Control Unit J126; Removing And Installing Pump Valve Unit - Audi Air conditioning 2003 A8 Workshop Manual

played ⇒ "Guided fault-finding" function of vehicle diagnostic,
testing and information system VAS 5051.
5.17 Removing and installing fresh air blower
control unit -J126-
5.17.1 Removing
– Remove the plenum chamber cover on the left and right.
– Remove the dust and pollen filter
– Remove the body brace with the reinforcement to the scuttle
panel trim ⇒ Running gear; Rep. gr. 40 .
– Remove the intake housing with air flow flap
WARNING
The heat sink may be hot.
– Screw out the bolts -A- and -B-.
Note
Use can be made for removing the bolt -B- of a 1/4 inch socket
♦
wrench attachment for example.
Should it not be possible to remove the bolt -B- with the cover
♦
with air recirculation flap in position, the cover must be taken
out as well ⇒ page 52
– Unplug the connectors -C- and -D- from the fresh air blower
control unit -J126- .
Caution
Do not grasp hold of the impellers of the fresh air blower -V2- .
Applying force to the impellers or moving the balancing weights
attached to the impellers could cause imbalance and thus op‐
erating problems.
– Remove the fresh air blower control unit -J126- .
5.17.2 Installing
Install in reverse order.
– Interrogate the fault memory of the front operating and display
unit, Climatronic control unit -J255- and erase any faults dis‐
played ⇒ "Guided fault-finding" function of vehicle diagnostic,
testing and information system VAS 5051.
5.18

Removing and installing pump valve unit

In the event of a problem with „poor heat output", check the fol‐
lowing before removing the pump valve unit:
– Connection to coolant circuit (proper connection of supply and
return to engine) ⇒ Engine, mechanics; Rep. gr. 19 .
– Wiring to pump for possible interchange („+" and „-").⇒ Current
flow diagrams, Electrical fault finding and Fitting locations
⇒ page 31
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5. Components for control and regulation of air conditioner not located in passenger compartment
Air conditioning - Edition 09.2010
.
⇒ page 42 .
Audi A8 2003 ➤
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