fuse AUDI A4 1997 B5 / 1.G Brakes ESP Electrical Testing Workshop Manual

01-343

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified
value Corrective action
21 1 + 28
1 + 29 Voltage supply to ABS
control module -J104- via
terminal 15 Ignition
switched on. 10.5 to 14.5
V
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations - Check wiring from terminals 28
and 29 to Ground (GND).
- Check wiring from terminal 1 to
terminal 15 via fuse (10A).
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01-344

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective action
22 - Voltage supply of
solenoid valves via
ABS solenoid valve
relay -J106-.
Repair Manual, Brake System,
Repair Group 45
- Remove ABS solenoid valve relay -
J106-.


- Check voltage supply for ABS
solenoid valve relay -J106- at terminal
30 for open circuit or short circuit to
B+ or Ground (GND). 10.5 to
14.5 V
Electrical Wiring
Diagrams, Troubleshooting
& Component Locations - Check the relevant fuse,
25A, and repair the wiring
problem.

See continuation on next page
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01-346

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective action
23 - Voltage supply for
ABS return flow
pump relay -J105-
via terminal 30
Repair Manual, Brake System,
Repair Group 45
- Remove ABS return flow pump relay
-J105-.


- Check voltage supply for ABS return
flow pump relay -J105- at terminal 30
for open circuit or short circuit to
Ground (GND). 10.5 to
14.5 V
Electrical Wiring
Diagrams, Troubleshooting
& Component Locations - Check the relevant fuse,
60A, and repair wire
damage.
Pa
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pair&id=AUDI.B5.SU02.01.16

01-351

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work steps Specified
value Corrective action
25 51 + 28 ABS control module -J104- is
supplied with power at terminal 51
from terminal 30. The ABS control
module -J104- uses this voltage
supply as a voltage supply for the
hydraulic pump for traction control
-V156. - Check the wiring from ABS
control module -J104-
(terminal 51) to terminal 30 for
open circuit and short circuit to
Ground (GND). 10.5 to
14.5 V
Electrical Wiring
Diagrams,
Troubleshooting &
Component Locations - Check the relevant
fuse, 25A, and repair
the wiring problem.
Pa
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yp
e=re
pair&id=AUDI.B5.SU02.01.16

01-352

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work
steps Specified
value Corrective action
26 28 + 48 Function of brake
light switch -F- Ignition switched
off
- Check wire from terminal 28 to
Ground (GND).
Brake pedal not
depressed
- Operate brake
pedal. 0.0 to 1.0 V

10.0 to 14.5
V Electrical Wiring Diagrams,
Troubleshooting & Component
Locations
Repair Manual, Brake System,
Repair Group 45
- Check wiring from terminal 48 to
terminal 30 via fuse (10A).
- Adjust brake light switch -F-.

See continuation on next page
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01-353
Continuation: Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work
steps Specified
value Corrective action
26 28 + 42 Function of brake light
switch -F-(Brake test
switch)
Brake pedal not
depressed
- Operate brake
pedal. 10.0 to 14.5
V

0.0 to 1.0 V Electrical Wiring Diagrams,
Troubleshooting & Component
Locations
Repair Manual, Brake System,
Repair Group 45
- Check wiring from terminal 42 to
terminal 15 via fuse (10A).
- Adjust brake light switch -F-.
Pa
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pair&id=AUDI.B5.SU02.01.16

01-354

Voltage measurement; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified
value Corrective action
27 1 + 76 Function of parking
brake warning light
switch -F9- Ignition switched
on.
- Check wiring from terminal 1 to terminal
15 via fuse (10A).
Parking brake
not engaged
- Set parking brake0.0 to 1.0
V

10.0 to 14.5
V Electrical Wiring Diagrams,
Troubleshooting & Component Locations - Check wiring from terminal 76 to parking
brake warning light switch -F9- for open
circuit or short circuit to B+.

See continuation on next page
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pair&id=AUDI.B5.SU02.01.16