Audi Q7 2007 Repair Manual page 210

Audi Q7 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 04.2013
Note
From MY 2014, a Coolant Shut-
♦
Off Valve - N82- is installed on
certain engines without the op‐
tional "parking heater".
The coolant shut-off valve -N82-
♦
is activated by the Climatronic
Control Module - J255- front A/C
control head (via the Engine
Coolant Shut-Off Valve Relay -
J541- ), when no heat is desired
in the passenger compartment.
Refer to Wiring diagrams, Trou‐
bleshooting & Component loca‐
tions and use the Vehicle Diag‐
nostic Tester via the "Guided
Fault Finding" function.
The Heater Coolant Shut-Off
♦
Valve - N82- is activated by the
Auxiliary Heater Control Module
- N279- when requested by the
climatronic control module -
J255- on vehicles with the op‐
tional "parking heater" and a
motor on which a coolant shut-off
valve -J255- would be activated
(observe the parking heater
adaptation). Refer to the Vehicle
Diagnostic Tester via the "Gui‐
ded Fault Finding" function.
4 - Coolant Supply to Heater Core in Rear A/C Unit
❑ For incorporation of A/C system into coolant circuit, refer to
⇒ "6 Incorporation of the A/C System in Vehicle Coolant Circuit", page 66
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
5 - Coolant Return From the Heat Exchanger in the Rear A/C Unit
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
❑ For incorporation of A/C system into coolant circuit, refer to
⇒ "6 Incorporation of the A/C System in Vehicle Coolant Circuit", page 66
6 - Coolant Return to Engine
❑ For incorporation of A/C system into coolant circuit, refer to
⇒ "6 Incorporation of the A/C System in Vehicle Coolant Circuit", page 66
❑ Incorporation of A/C system into engine cooling circuit. Refer to ⇒ Engine Mechanical; Rep. Gr. 19 ;
Coolant System; Coolant Hose Connection Diagram .
7 - Bracket for Coolant and Refrigerant Lines
8 - Connection Points in Refrigerant Lines
❑ For loosening and assembling connection points of refrigerant lines, refer to
⇒ "15.8 Connection Points of Refrigerant Lines, Loosening and Assembling ", page 262
9 - Pass-Through for Coolant Hoses and Refrigerant Lines
❑ Removing and Installing. Refer to
⇒ "19.2 Coolant Hose and Refrigerant Line Pass-Through to Rear Wheel Housing, Removing and In‐
stalling", page 322
❑ Check that coolant hoses are installed correctly.
❑ Refrigerant line, disconnecting and reconnecting. Refer to
⇒ "19.2 Coolant Hose and Refrigerant Line Pass-Through to Rear Wheel Housing, Removing and In‐
stalling", page 322
204
Rep. Gr.87 - Air Conditioning
with respect to the correctness of information in this document. Copyright by AUDI AG.
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