ABS AUDI A4 1999 B5 / 1.G Brakes ESP Electrical Testing Owner's Guide
[x] Cancel search | Manufacturer: AUDI, Model Year: 1999, Model line: A4, Model: AUDI A4 1999 B5 / 1.GPages: 65, PDF Size: 0.21 MB
Page 44 of 65
01-334
Function test: Red brake warning symbol
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective
action
18 - Function of red "brake
system malfunction"
symbol
Repair Manual, Brake System, Repair
Group 47
Brake fluid level is OK Function of ABS warning light -K47-
already checked in step 17. Multi-pin connector connected to ABS
control module -J104- and retainer
catch engaged. Switch on ignition
See continuation on next page
Pa
ge 44 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 45 of 65
01-335
Continuation: Function test: Red brake warning symbol
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified value
Corrective action
18 - Function of red
"brake system
malfunction"
symbol
- Connect VAG1551 scan tool
and select address word 03
- For vehicles with automatic
transmission and instrument
cluster with DIS, depress the
brake pedal and select a
driving gear. The ABS/EDL indicator lamp
and the red "brake system
malfunction" symbol light up.
If the traction control indicator
light is OK, it lights up as
well. Repair Manual,
Electrical Equipment, Repair Group 90; Instrument cluster
- Malfunction in
instrument cluster
Pa
ge 45 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 46 of 65
01-336
Function test: Traction control indicator light -K86-
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective
action
19 - Function of traction
control indicator light -
K86- DTC memory checked and no DTC
present in DTC memory of ABS control
module -J104-. Ignition switched off Multi-pin connector connected to ABS
control module -J104- and retainer catch
engaged.
See continuation on next page
Pa
ge 46 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 47 of 65
01-337
Continuation: Function test: Traction control indicator light -K86-
Test step
VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified value
Corrective action
19
Continuation: - Function of
traction
control
indicator light
-K86- - Switch on
ignition Traction control
indicator light -K86-
comes on for two
(2) seconds and
then goes out.
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations - If traction control indicator light does
not light up, check vehicle voltage and
wire from terminal 31 of ABS control
module -J104- to instrument cluster for
short circuit to B+ and open circuit.
- If traction control indicator lights
continuously, test wiring from terminal
31 of ABS control module -J104- to
instrument cluster for short circuit to
Ground (GND).
See continuation on next page
Pa
ge 47 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 48 of 65
01-338
Continuation: Function test: Traction control indicator light -K86-
Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified
value Corrective action
19 - Function of
traction control
indicator light -
K86-
Repair Manual, Electrical Equipment, Repair
Group 90; Instrument cluster
- Are voltage of electrical system OK and wiring
from terminal 31 of ABS control module -J104-
to instrument cluster intact? malfunction in
instrument cluster
Pa
ge 48 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 49 of 65
01-339
Function test: Traction control button; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective
action
20 - Function of
ASR/ESP button Ignition switched off Function of traction control indicator light -
K86- already checked in step 19. Multi-pin connector connected to ABS control
module -J104- and retainer catch engaged.
See continuation on next page
Pa
ge 49 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 50 of 65
01-340
Continuation: Function test: Traction control button; set measurement range on VAG1526: 20 V =
Test
step VAG
1598/20
sockets Test of
Test
requirements
- Additional work
steps Specified value
Corrective action
20 - Function of
ASR/ESP
button
- Switch on ignition
- Press ASR/ESP
button Traction control
indicator light -K86-
lights up - Switch off ignition.
- Detach multi-pin connector from
ABS control module -J104- and
remove.
- Press ASR/ESP
button again Traction control
indicator light -K86-
goes out - Connect VAG1598/20 test box.
See continuation on next page
Pa
ge 50 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 53 of 65
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).
Pa
ge 53 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 54 of 65
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
Pa
ge 54 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16
Page 55 of 65
01-345
Continuation: 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-
.
- Check wiring from ABS solenoid valve
relay -J106- (terminal 87) to ABS
hydraulic unit -N55- (terminal 10) for
open circuit or short circuit to B+ or
Ground (GND).
- Fix the wiring problem.
- If the power supply lines
are OK, replace the relay.
- If the original malfunction
"ABS solenoid valve relay -
J106-" is still not fixed,
replace the ABS hydraulic
unit.
Pa
ge 55 of 65 Electronic Stabilization Pro
gram
(ESP
), electrical testin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.16