Volkswagen Golf / Golf GTI / Jetta. Manual — part 969

87-91

7 - A/C

pressure
switch -
F129-* or
high
pressure
sensor -
G65-*

15 Nm

(11 ft lb)

Tightening

torque 8
Nm (71
in.lb)

Always

replace
O ring
(note
Part
No.).

-F129-

checking

Page

87-100

-G65-

checking

Page

87-102

-F129-

and -
G65-
can also
be
checked
using
VAS
5051 in
mode
"Guided
Fault
Finding".

-G65-
monitored
by On
Board

A/C refrigerant system, servicing

13/2/2005

Diagnostic
of Engine
Control
Module
(ECM).

Function:

-F129-

switches
the
coolant
fan -V7-
to next
higher
speed
when
pressure
increases
in
refrigerant
circuit.

-F129-

switches off
A/C clutch
whenever
excessive
refrigerant
system
pressure is
present (e.g.:
insufficient air
flow over
condensor or
if system is
overcharged).

-F129-

switches
off A/C
clutch
whenever
insufficient
refrigerant
system
pressure
is present
(e.g.:
refrigerant
has
leaked
out).

A/C refrigerant system, servicing

13/2/2005

-G65-

supplies
refrigerant
system
pressure
signal to
coolant
fan
control
module -
J293- and
ECM.

A/C refrigerant system, servicing

13/2/2005

87-92

8 - O-Ring

Always replace

10.8 mm; 1.8

mm

9 - Schrader valve

10 - Threaded plate

11 - O-ring

Always replace

10.8 mm; 1.8

mm

12 - Expansion

valve

Located in right

side of engine
compartment

Hole for

refrigerant
lines at
bulkhead must
be must be
sealed against
splash water

Function

Page 87-82

Removing/assembly

Page 87-107

A/C refrigerant system, servicing

13/2/2005