brake AUDI A4 1998 B5 / 1.G Brakes ESP DTC Table User Guide

01-378

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
00778
Steering angle sensor -
G85-
no communication
Open circuit or loose contact in data-BUS
wires between steering angle sensor -G85-
and ABS control module (w/EDL) -J104- - Check fuses, wires and harness
connectors as well as voltage supply to the
control module: test step no. 13 page
01
-323

Check specified values of:

Steering angle sensor -G85-- Read measuring value block, function 08
page 01
-256
, display group number 004


Steering angle sensor -G85- malfunctioning
Repair Manual, Brake System, Repair
Group 45
- Replace steering angle sensor.

- Code the ABS control module (w/EDL) -
J104- page 01
-234

- Then perform zeroing procedure page 01
-243

Pa
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(ESP
) DTC table
11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-379

Printed output from
VAG1551 Scan Tool (ST) Possible cause
Corrective action
00778
Steering angle sensor -
G85-
Not adjusted or incorrectly
adjusted
Steering angle sensor -G85- is not sending
adjustment values or is sending incorrect
values - Zero the steering angle sensor page
01
-243

00778
Steering angle sensor -
G85-
Mechanical malfunction
The steering angle sensor -G85- is not
installed correctly.
Repair Manual, Brake System, Repair
Group 45
- Check installed position of the steering
angle sensor


Vehicle alignment is not OK
Repair Manual, Suspension, Wheels,
Steering, Repair Group 44; Vehicle alignment
- Perform vehicle alignment.


Steering wheel was removed and zeroing
was not performed afterward. - Then perform zeroing procedure page
01
-243

Pa
ge 25 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-380

Printed output from VAG1551
Scan Tool (ST) Possible cause
Corrective action
00778
Steering angle sensor -G85-
Implausible signal
The steering angle sensor -G85- is
not installed correctly. Zero position calibration is not OK
Repair Manual, Brake System, Repair Group
45
- Check installed position of steering angle
sensor -G85-

Vehicle alignment is not OK
Repair Manual, Suspension, Wheels, Steering,
Repair Group 44; Vehicle alignment
- Perform vehicle alignment.

- Then perform zeroing procedure page 01
-
243

00778
Steering angle sensor -G85-
malfunctioning
Steering angle sensor -G85- is
malfunctioning
Repair Manual, Brake System, Repair Group
45
- Replace steering angle sensor.

- Then perform zeroing procedure page 01
-
243

Pa
ge 26 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-387

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01314
Engine Control Module
(ECM)
Control difference
The Engine Control Module
(ECM) is not able to reduce
engine torque. - Replace the ABS/ESP control module -J104- after
conferring with the product department of your distributor
or with the responsible importer.
01316
Brake control module
Control difference It took longer than 5 seconds for
an ESP adjustment. - Replace the ABS/ESP control module -J104- after
conferring with the product department of your distributor
or with the responsible importer.
Pa
ge 33 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-388

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01418
Pilot valve -1- traction
control -N225-
Open circuit, short circuit to B+ or Ground (GND)
in wiring between ABS hydraulic unit -N55- and
ABS control module -J104-.
Pilot valve -1- traction control -N225-
malfunctioning.
Repair Manual, Brake System, Repair
Group 45
- Carry out "electrical test", step 5 page 01
-
318
.
- If the electrical test does not reveal any
malfunctions, check all wiring and connectors
for loose contacts.
- If the suggested steps do not lead to a
localization of the malfunction, replace the
ABS control module (w/EDL) -J104-.
01419
Pilot valve -2- traction
control -N226-
Open circuit, short circuit to B+ or Ground (GND)
in wiring between ABS hydraulic unit -N55- and
ABS control module -J104-.
Pilot valve -2- traction control -N226-
malfunctioning. - Carry out "electrical test", step 5 page 01
-
318
.
- If the electrical test does not reveal any
malfunctions, check all wiring and connectors
for loose contacts.
- If the suggested steps do not lead to a
localization of the malfunction, replace the
ABS control module (w/EDL) -J104-.
Pa
ge 34 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

Repair Manual, Brake System, Repair
Group 45

Pa
ge 35 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-389

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01420
High pressure switch
valve -1- traction
control -N227-
Open circuit, short circuit to B+ or Ground
(GND) in wiring between ABS hydraulic unit -
N55- and ABS control module -J104-.
High pressure switch valve -1- traction control -
N227- malfunctioning.
Repair Manual, Brake System, Repair
Group 45
- Carry out "electrical test", step 6 page
01
-318
.
- If the electrical test does not reveal any
malfunctions, check all wiring and
connectors for loose contacts.
- If the suggested steps do not lead to a
localization of the malfunction, replace the
ABS control module (w/EDL) -J104-.
01421
High pressure switch
valve -2- traction
control -N228-
Open circuit, short circuit to B+ or Ground
(GND) in wiring between ABS hydraulic unit -
N55- and ABS control module -J104-.
High pressure switch valve -2- traction control -
N228- malfunctioning. - Carry out "electrical test", step 6 page
01
-318
.
- If the electrical test does not reveal any
malfunctions, check all wiring and
connectors for loose contacts.
- If the suggested steps do not lead to a
localization of the malfunction, replace the
ABS control module (w/EDL) -J104-.
Pa
ge 36 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

Repair Manual, Brake System, Repair
Group 45

Pa
ge 37 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-391

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01422
Hydraulic pump for
traction control -V156-

Continuation:
Short circuit to Ground (GND) in
hydraulic pump for traction
control -V156-.
Repair Manual, Brake System, Repair Group 45
- If you do not find a problem in wiring between hydraulic
pump for traction control -V156- and ABS control module -
J104-, replace hydraulic pump for traction control -V156-.


See continuation on
next page Note: Only replace the control
module as a last resort.
ABS control module -J104-
malfunctioning
Repair Manual, Brake System, Repair Group 45
- If the malfunction cannot be fixed, replace the ABS
control module -J104-. Pa
ge 39 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17

01-393

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01422
Hydraulic pump for
traction control -V156-
Short circuit to B+

Continuation:
Open circuit or short circuit to B+
in hydraulic pump for traction
control -V156-.
Repair Manual, Brake System, Repair Group 45
- If you do not find a problem in wiring between hydraulic
pump for traction control -V156- and ABS control module -
J104-, replace hydraulic pump for traction control -V156-.


See continuation on
next page Note: Only replace the control
module as a last resort.
ABS control module -J104-
malfunctioning
Repair Manual, Brake System, Repair Group 45
- If the malfunction cannot be fixed, replace the ABS
control module -J104-. Pa
ge 41 of 96 Electronic Stabilization Pro
gram
(ESP
) DTC table
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.17