1999 AUDI A4 brake sensor

01-425

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01464 If this malfunction is recognized by On Board Diagnostic (OBD), then the voltage supply of
sender 1 for brake booster -G201- was not distinguished from the voltage supply for the sensor
for transverse acceleration -G200-. Check both components and their wiring.
Brake pressure
sensor/lateral
acceleration sensor
Voltage supply

Continuation:
One of the two sensors is
malfunctioning. If you do not find any malfunctions in the voltage supply
lines, then:
Repair Manual, Brake System, Repair Group 45
- Erase DTC memory page 01
-15
- End Output page 01
-16
.
- Ignition off
- Disconnect one sensor and then the other.
- Replace the sensor for which the DTC is no longer
recognized after the ignition is switched on.

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 77 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

01-431

Printed output from VAG1551
Scan Tool (ST) Possible cause
Corrective action
DTC
01542
Sender for rotation rate -G202-
Implausible signal

Continuation: (Second)
Sender for rotation rate -G202-
malfunctioning. If none of the causes fit:
Repair Manual, Brake System, Repair Group
45
- Erase DTC memory page 01
-15
- End Output page 01
-16
.
- Road test vehicle page 01
-250
- If malfunction occurs again, replace yaw
sensor -G202-.


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 83 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

01-434

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.
01542
Sender for rotation rate -
G202-
Implausible signal

Continuation: (Second)
The combined sensor for rotation rate
and transverse acceleration is
malfunctioning. If none of the causes fit:
Repair Manual, Brake System, Repair
Group 45
- Erase DTC memory page 01
-15
- End Output page 01
-16
.
- Road test vehicle page 01
-250
- If malfunction occurs again, replace
combined sensor for rotation rate and
transverse acceleration.


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 86 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

01-436

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
01542
Sender for rotation rate -
G202-
Implausible signal

Continuation:
Fourth:
The zero position of steering angle sensor -G85- is within the specified range, and the zero
position of sensor for transverse acceleration -G200- is within the specified range:

- Check the sender for rotation rate -G202- by selecting the "Read measuring value block"
function 08 page 01
-256
, display group 5,


The yaw sensor -G202- is loose.
Repair Manual, Brake System, Repair Group 45

- Check bolts for yaw sensor -G202-.



See continuation on next
Open circuit in signal wire of sender
for rotation rate -G202-.
Short circuit to B+ or Ground (GND)
in signal wire to sender for rotation
rate -G202-. Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check signal line between yaw sensor -G202-
(terminal 3) and ABS control module -J104-
(terminal 79).
Pa
ge 88 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

01-438

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
01542
Sender for rotation rate -G202-
Implausible signal

Continuation: (Fourth)
Sender for rotation rate -G202-
malfunctioning. If none of the causes fit:
Repair Manual, Brake System, Repair Group
45
- Erase DTC memory page 01
-15
- End Output page 01
-16
.
- Road test vehicle page 01
-250
- If malfunction occurs again, replace yaw
sensor -G202-.


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 91 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

01-439

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.
01542
Sender for rotation rate -
G202-
Implausible signal

Continuation:
Fourth:
The zero position of steering angle sensor -G85- is within the specified range, and the zero
position of the combined sensor for rotation rate and transverse acceleration is within the
specified range:

- Check the combined sensor for rotation rate and transverse acceleration by selecting "Read
measuring value block" function 08 page 01
-256
, display group 5


See continuation on next
page
The combined sensor for rotation rate and
transverse acceleration is loose.
Repair Manual, Brake System, Repair
Group 45
- Check bolts for combined sensor for
rotation rate and transverse acceleration.
Pa
ge 92 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