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
Component Location Overview - Electrical Components
1 - AWD Control Module -J492-
Component location. Refer to
→ Fig. " AWD Control Module -J492- in the A4".
Additional work after replacing the control module. Refer to
→ Chapter "AWD Control Module -J492-, Additional Wor
WARNING
Risk of injury. Follow all warning messages and
safety precautions. Refer to
→ Chapter "Warnings and Safety Precautions".
In order to prevent damage to the Battery -A- or
vehicle, observe the battery type information. Refer to
→ Chapter "Battery Types".
WAR