1996 AUDI A4 Brakes Basic Setting 04 Workshop Manual

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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01-259
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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01-260

Note:
The display group numbers can be selected in
sequence by pressing buttons <-1 and 3-> on the
VAG1551 scan tool, or the arrow buttons and
on the VAG1552 mobile scan tool or the arrow
buttons and on the screen of the VAS5051
tester.
- Press -C- button to input display group number
manually. Read measurin
g value block
Enter display group number XXX

Indicated on display:
- Press buttons -0-, -0- and -2-.
- Press -Q- button to confirm input.
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01-261
Test table: display group 2 Read measuring value block
2
Indicated on display

0 or
operated 0 or
operated
0 or
operated 0 or
operated


Traction control button
0 Traction control button not operated Traction control switch operated
- Check traction control button if there are deviations. Carry out "Electrical test", step 20.

Parking brake

0 Parking brake not engaged Parking brake engaged
- Check parking brake warning light switch -F9- if
there are deviations. Carry out "Electrical test", step
27.

Brake light switch:
0 Brake pedal not depressedBrake pedal depressed- Check brake light switch if there are deviations. DTC table page
01
-356
; DTC "Brake light switch -F-"; DTC 00526.
Brake test switch:

0 Brake pedal not
depressed Brake pedal depressed
- The brake test signal precedes the brake light signal. Check brake light switch if there
are deviations:DTC table page 01
-356
; DTC "Brake light switch -F-"; DTC 00526.
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01-262

Note:
The display group numbers can be selected in
sequence by pressing buttons <-1 and 3-> on the
VAG1551 scan tool, or the arrow buttons and
on the VAG1552 mobile scan tool or the arrow
buttons and on the screen of the VAS5051
tester.
- Press -C- button to input display group number
manually. Read measurin
g value block
Enter display group number XXX

Indicated on display:
- Press buttons -0-, -0- and -3-.
- Press -Q- button to confirm input.
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01-263

Note:
For display group 3 (005):

To read the display fields for engine speed and
current engine torque with the engine running,
communication between the scan tool and the
control module must be terminated via the "End
Output" function page 01
-16
. Start the
engine and reinitiate communication between
the scan tool and the control module.
Rapid data transfer
Q
08 - Read measurin
g value block

Indicated on display:
- Press buttons -0- and -8- to select "Read measuring value block"
function 08.
- Press -Q- button to confirm input.
Read measurin
g value block
Enter display group number XXX

Indicated on display:
- Press buttons -0-, -0- and -3-.
- Press -Q- button to confirm input.
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01-264
Test table: display group 3 Read measuring value
block 3
Indicated on display
60 to
8000
1 RPM 0 to
630
Nm
0 to
630
Nm 0 to 100
%


Throttle valve angle:
- 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
.

Dissipation torque:
- 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
.

Engine torque:
- 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
.
Engine speed:

Engine speed is displayed in increments of 60 RPM, starting at 60 RPM.
- 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
.
Notes:
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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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