ABS AUDI A4 1998 B5 / 1.G Brakes ESP DTC Table Repair Manual

01-420

Printed output from
VAG1551 Scan Tool
(ST) Possible cause
Corrective action
DTC
01435
Continuation:
Sender 1 for brake booster
-G201-
Failure in electrical circuit
Open circuit in signal wire of sender
1 for brake booster -G201-.
Short circuit to B+ or Ground (GND)
in signal wire to sender 1 for brake
booster -G201-. Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check signal line between sensor for brake
pressure -G201- (terminal 2) and ABS control
module -J104- (terminal 68).






See continuation on next
page
Open circuit in one of the voltage
supply wires to sensor for brake
pressure -G201-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) between sensor for brake
pressure -G201- (terminal 1) and ABS control
module -J104- (terminal 67).
- Check voltage supply between sensor for brake
pressure -G201- (terminal 3) and ABS control
module -J104- (terminal 69).
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01-421

Printed output from
VAG1551 Scan Tool (ST) Possible cause
Corrective action
DTC
01435
Sender 1 for brake booster
-G201-
Failure in electrical circuit

Continuation:
Sensor for brake pressure -
G201- malfunctioning.
Repair Manual, Brake System, Repair Group 45

Repair Manual, Brake System, Repair Group 47 - If none of the causes listed are causing the malfunction,
replace hydraulic pump for traction control V-156- and
sensor for brake pressure -G201-.
- Bleed brake system.


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
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01-423

Printed output from
VAG1551 Scan Tool (ST) Possible cause
Corrective action
DTC
01435
Continuation:
Sender 1 for brake booster
-G201-
- voltage supply
Voltage supply has a short circuit
to B+.
Voltage supply has a short circuit
to Ground (GND).
Open circuit in one of the voltage
supply wires to sensor for brake
pressure -G201-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) between sensor for brake
pressure -G201- (terminal 1) and ABS control module
-J104- (terminal 67).
- Check voltage supply between sensor for brake
pressure -G201- (terminal 3) and ABS control module
-J104- (terminal 69).
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01-424

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
Insufficient voltage supply for
sender 1 for brake booster -
G201-. - Check the voltage supply lines from the sensor for brake
pressure -G201- (terminal 3) to the ABS control module -J104-
(terminal 69) for a short circuit to Ground (GND) or B+.



See continuation on
next page Insufficient voltage supply to
sensor for transverse
acceleration -G200-. - Check the voltage supply lines from the sensor for transverse
acceleration -G200- (terminal 3) to the ABS control module -
J104- (terminal 75) for a short circuit to Ground (GND) or B+.
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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-.
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pair&id=AUDI.B5.SU02.01.17

01-427

Printed output
from VAG1551
Scan Tool (ST) Possible cause
Corrective action
DTC
01542
Sender for
rotation rate -
G202-
Implausible
signal The input signals received by ABS control module -J104- are analyzed by computing programs and
checked for plausibility. If the sender for rotation rate -G202- fails, the relevant computing program relies
primarily on the steering angle sensor -G85- and the sensor for transverse acceleration -G200-. If you
think there is a problem with the sender for rotation rate -G202-, check whether the steering angle
sensor -G85- and sensor for transverse acceleration -G200- are OK. These must also be checked.
- While driving straight ahead (v < 20 km/h), check the zero position of the steering angle sensor -G85-,
by selecting display group 5 in "Read measuring value block", function 08 page 01
-256
.
- Check the sensor for transverse acceleration -G200- as described in the instructions for "Read
measuring value block" function 08 page 01
-270
, display group 5.
See continuation
on next page There are four possibilities:
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01-429

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:
Second: (Also note the fourth possibility)
The zero position of steering angle sensor -G85- is within the specified range, and the zero
position of yaw sensor -G202- is not within the specified range:



See continuation on next
page
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).
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01-430

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: (Second)


See continuation on next
page
Open circuit in supply line
to yaw sensor -G202-.
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check Ground (GND) between yaw sensor -G202-
(terminal 1) and ABS control module -J104- (terminal 80).
- Check voltage supply between yaw sensor -G202-
(terminal 2) and ABS control module -J104- (terminal 34).
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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-.
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01-432

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: (Also note the fourth possibility)
The zero position of steering angle sensor -G85- is within the specified range, and the zero position
of the sensor for transverse acceleration -G200-, or the combined sensor for rotation rate and
transverse acceleration, is not within the specified range:


There is an open circuit in one of the signal
wires for the combined sensor for rotation
rate and transverse acceleration.
There is short circuit to B+ or Ground
(GND) in one of the signal wires for the
combined sensor for rotation rate and
transverse acceleration. Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check the signal wire for the combined sensor
for rotation rate and transverse acceleration,
terminal 4, to the ABS control module -J104-
(terminal 18).
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