2000 AUDI A4 brake

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

01-394

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01422
Continuation:
Hydraulic pump for
traction control -V156-
Open circuit/short
circuit to Ground
(GND)
Short circuit to Ground (GND) in wiring
between hydraulic pump for traction
control -V156- and ABS control module
-J104-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check wiring between hydraulic pump for traction
control -V156- and ABS control module -J104- for
short to Ground (GND).


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-.

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 42 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

01-395

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC WARNING!
This is only valid for control modules with no.: 4B0 907 389
01423
Sensor for transverse
acceleration -G200-
Sensor for transverse acceleration -
G200- not installed correctly.
Repair Manual, Brake System, Repair Group 45
- Check the installation position of the sensor for
transverse acceleration -G200-.






See continuation on
next page
There is an open circuit in one of the
supply wires for the sensor for
transverse acceleration -G200-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) between sensor for
transverse acceleration -G200 (terminal 1) and ABS
control module -J104- (terminal 19).
- Check voltage supply between sensor for
transverse acceleration -G200 (terminal 3) and -
J104- ABS control module (terminal 75).
Pa
ge 43 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

01-396

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC WARNING!
This is only valid for control modules with no.: 4B0 907 389
01423
Sensor for transverse
acceleration -G200-

Continuation:
Open circuit in signal line to sensor for
transverse acceleration -G200-.
Short circuit to B+ or Ground (GND) in
signal line to sensor for transverse
acceleration -G200-. Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check signal line between sensor for transverse
acceleration -G200 (terminal 2) and ABS control
module -J104- (terminal 18).


Sensor for transverse acceleration -
G200- malfunctioning.
Repair Manual, Brake System, Repair Group 45

- If none of the causes listed are causing the
malfunction, replace sensor for transverse
acceleration -G200-.


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 44 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

01-397

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC WARNING!
This is only valid for control modules with no.: 8D0 907 389, 8D0 907 389A, 8D0 907 389D
and 8D0 907 389E.
01423
Sensor for transverse
acceleration -G200-
Sensor for transverse acceleration -
G200- not installed correctly.
Repair Manual, Brake System, Repair Group 45
- Check the installation position of the sensor for
transverse acceleration -G200-.






See continuation on
next page
There is an open circuit in one of the
supply wires for the sensor for
transverse acceleration -G200-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) between sensor for
transverse acceleration -G200 (terminal 1) and ABS
control module -J104- (terminal 69).
- Check voltage supply between sensor for
transverse acceleration -G200 (terminal 3) and -
J104- ABS control module (terminal 67).
Pa
ge 45 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