Volkswagen Golf / Golf GTI / Jetta. Manual — part 484

47-78

Switch to measuring range:

Resistance measurement (

)

Test

step

Contact

Item tested

Test

conditions

Specification Measures for

deviations from
specification

1

1 +

ground

Resistance of -
V192- brake
system va-cuum
pump

Ignition

switched
off

5.0 to 5.3

Electrical

Wiring Diagrams,
Troubleshooting
& Component
Locations binder

- Check wiring
using wiring
diagram

2

2 + pin

22

Communication
signal of engine
control module to
-V192- brake
system vacuum
pump

Ignition

switched
off

0.0 to 0.1

Electrical

Wiring Diagrams,
Troubleshooting
& Component
Locations binder

- Check wiring
using wiring
diagram

Brake booster/brake master cylinder for vehicles with ABS/EDL/ASR/ESP Mark...

47-79

Switch to measuring range:

Resistance measurement (

)

Test

step

Contact

Item tested

Test

conditions

Specification Measures for

deviations from
specification

3

5 + fuse

51

Resistance of
connection of
battery to -
V192- brake
system
vacuum pump

Ignition

switched
off

1.7 to 1.8

Electrical Wiring

Diagrams,
Troubleshooting &
Component
Locations binder

- Check wiring
using wiring
diagram

Brake booster/brake master cylinder for vehicles with ABS/EDL/ASR/ESP Mark...

47-80

Switch to measuring range:

Voltage measurement (20 V =)

Test

step

Contact

Item

tested

Test

conditions

Specification Measures for

deviations from
specification

4

5 + 1

Voltage
supply of
Battery to -
V192-
brake
system
vacuum
pump

Ignition

switched
off

12.0 to 12.81 V

(approx. battery

voltage)

Electrical Wiring

Diagrams,
Troubleshooting &
Component
Locations binder

- Check wiring
using wiring
diagram

Brake booster/brake master cylinder for vehicles with ABS/EDL/ASR/ESP Mark...

47-81

Brake master cylinder,
removing and
installing

Special tools and equipment

Removing

3094 Hose clamps

- Obtain radio code on vehicles

with coded radio.

- Disconnect battery.

- Lay out sufficient lint free clothes

in area of plenum chamber,
engine and transmission.

- Draw off as much brake fluid as

possible from brake fluid reservoir
using brake filler and bleeder unit
VAS 5234.

Brake master cylinder, removing and installing