ABS AUDI A4 1999 B5 / 1.G Brakes Basic Setting 04 Workshop Manual

01-242


Basic setting (scan tool
function 04)
Initiating "Basic Setting" function 04 does the
following for ESP:

The steering angle sensor -G85- is zeroed
using display group 001 page 01
-243

Before you can zero the sensor, you must have
successfully carried out the "Login Procedure"
function 11 using the VAG1551/1552 scan tool
and the ABS control module -J104- must be
coded page 01
-234
.

The hydraulic pump for traction control -
V156- is activated using display group 002
Activation of the hydraulic pump for traction
control -V156- does not require any preparations.
It is used to bleed the hydraulic system page
01
-248
.

The ESP driving test is activated using
display group 003
The ESP driving test is used to test the
plausibility of the signals from the sensor for
transverse acceleration, yaw sensor and
pressure sensor page 01
-250
.
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01-250

ESP driving and system test

The ESP driving test is used to test the
plausibility of the signals from the sensor for
transverse acceleration, yaw sensor, and
pressure sensor.

Road test vehicle
Some DTCs are only recognized by the On
Board Diagnostic (OBD)while the vehicle is
moving. You can check the entire system during
a road test. During road test, drive at a speed of
at least 60 km/h for 30 seconds. Check traffic
conditions and perform an ABS regulated braking
when appropriate. You will feel a pulsing in the
brake pedal indicating the system is active.

Note:
Once the ESP driving test has been initiated, it
cannot be aborted and must be performed
completely. After exiting the diagnostic, the
ABS/EDL and ASR/ESP lamps remain switched
on in order to indicate that the test is active and
that system function is not available yet.
Warning, ABS and ESP not functioning!
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01-251

WARNING!

While system is in diagnostic, the
ABS/ESP/EBD is not active. Driving the
vehicle after On Board Diagnostic (OBD) has
detected a malfunction presents the risk of
accident. The brake system will only be
partially functional. Because brake pressure
at the rear wheels is no longer regulated vie
Electronic Brake Distribution (EBD), the rear
wheels tend to brake excessively. This
causes the rear of the vehicle to break loose.

When the use of test equipment is required
during road tests, test equipment must
always be secured to the rear seat and
operated from there by a second person. If
test and measuring equipment is operated
from the passenger seat, the person seated
there could be injured in the event of an
accident involving deployment of the
passenger-side airbag.
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01-252

- Connect VAS5051 tester or VAG1551 scan tool
and select the address word 03 "Brake
Electronics" page 01
-4
Rapid data transfer
HELP
Select function XX

Indicated on display:
- Press buttons -0- and -4- to select function 04 "Basic Setting"
Rapid data transfer
Q
04 - Basic Settin
g

Indicated on display:
- Press -Q- button to confirm input.
Basic Setting
Q
Enter displa
y group number XXX

Indicated on display:
- Press buttons -0-, -0-, and -3-. Press -Q- button to confirm input.
System in basic setting
3
System test activated
OK

Indicated on display:
The ESP driving test is activated.
The ABS warning light -K47- and the traction control indicator light -
K86- go on.
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01-254

Make a right or left turn. Then reverse the
direction and continue driving until the
ABS/EDL lamp turns off.

Note:
While driving around the curves, a yaw rate of
around 10 /sec must be obtained. A curve with
a radius of 10 to 12 m and a speed of 15 to 20
km/h for around 4 sec. fulfills this requirement.

The ABS warning light -K47- must go out. This
completes the ESP driving test and the system
is OK.

If the ABS/ESP warning light -K47- remains lit,
the test is not OK (system locked). Check DTC
memory.
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If the ABS warning light -K47- does not go out,
the ESP driving test was not performed properly.

If the ABS warning light -K47- does not go out,
and the traction control indicator light -K86-
lights up again, there are malfunctions in the
system; Check DTC memory page 01
-356


Note:
If the ESP driving test was interrupted, e.g.: by
switching off the ignition, the entire test must be
repeated.
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01-258
Test table: display group 1
Notes:

Display fields 1 through 4 show the current wheel circumference speeds in km/h. These are calculated by the ABS control
module -J104- on the basis of the signals received from the wheel speed sensors. If one of the display fields shows no
reading, proceed as for DTCs 00283, 00285, 00287, 00290 "ABS Wheel Speed Sensor" DTC table page 01
-357
.
In order to check whether wheel speed sensors are properly allocated to each wheel, the vehicle must be raised. On
vehicles with manual transmission put the gear shift lever in neutral. On vehicles with automatic transmission move the
selector lever to position "N". Turn appropriate wheel by hand. Remaining drive wheels must be secured against turning.
When a vehicle is accelerated uniformly on a dry surface, the displayed value will increase continuously by whole
numbers; e.g. 6 km/h, 7 km/h, 8 km/h ... . The difference between displayed values 1-4 should not be more than 1 km/h
(error from out-of-round wheels). If the values jump, for instance from ...6km/h, 7 km/h, to 12 km/h...or if the difference
between the displayed values is greater than 1 km/h, then check the installation of the wheel speed sensors and rotors. Repair Manual, Brake System, Repair Group 45

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Test table: display group 1 Read measuring value block
1
Indicated on display
1 to 19
1)
km/h 1 to 19
1)
km/h
1 to 19
1)
km/h 1 to 19
1)
km/h


Rear right wheel circumference speed

Rear left wheel circumference speed

Front right wheel circumference speed
Front left wheel circumference speed 1) OBD is terminated by ABS control module -J104- if road speed exceeds 19 km/h (12 mph). 1 km/h is the minimum speed
that can be displayed (at 0 km/h, for example, the tester displays 1 km/h).
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On Board Diagnostic (OBD) will be terminated by the ABS control module -J104- if road speed exceeds 19 km/h.
The actual engine speed (MMI) is calculated by subtracting the dissipation torque from the engine torque.
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01-267
Test table: display group 4 Read measuring value block
4
Indicated on display
00:00 h
or
invalid Off/on
not
used not
used





EDL shut-off

Electronic Differential Lock (EDL) is deactivated at excessive brake temperature (only EDL).
Standing time (TIM):

The standing time (TIM) is used to calculate how much the brakes have cooled while the ignition is off. The ABS control
module -J104- receives the standing time signal from the instrument cluster.
- If nothing is displayed, press -C- button, select function 02 and check DTC memory. Repair the malfunction with the help
of the DTC table page 01
-356
.
Invalid:

Battery disconnected or completely discharged
Open circuit in wire from ABS control module (w/EDL) -J104- to instrument cluster
Note:
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