Introduction
The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the c
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - Solid
Refrigerant R134a Physical Data
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as ref
Special tools and workshop equipment
required
Torque Wrench 1331 5-50Nm -VAG1331-
Torque Wrench 1332 40-200Nm -VAG1332-
Engine and Gearbox Jack -VAS6931-
Gearbox Support -T40173-
Locating Pins -T40327-, not shown
Procedure
WARNING
There is a risk of an accident due to an unsecured
Fresh Air Door Motor -V438-, Removing and Installing
Note
Therefore, perform the basic setting for the A/C system
after installation of the adjustment motor. Refer to Vehicle
Diagnostic Tester in the "Guided Fault Finding" function.
Using the "output diagnostic test mode" and "basic set