1999 AUDI A4 ABS

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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On Board Diagnostic (OBD) will be terminated by the ABS control module -J104- if road speed exceeds 19 km/h.
Pa
ge 28 of 64 Basic settin
g (scan tool function 04
)
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yp
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pair&id=AUDI.B5.SU02.01.15

Specified value when driving straight ahead (steering wheel in straight-ahead position) 5 .
1)
1) If the steering angle sensor is OK, there will be an indication, even if the zeroing procedure was not performed.
Note:
On Board Diagnostic (OBD) will be terminated by the ABS control module -J104- if road speed exceeds 19 km/h.
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
.
Pa
ge 32 of 64 Basic settin
g (scan tool function 04
)
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pair&id=AUDI.B5.SU02.01.15

01-274
Test table: display group 6 Read measuring value
block 6
Indicated on display
0 volts to 18
volts
on
or
off
on
or
off 0 ...
131071


Workshop code:

The workshop code indicates the last workshop that executed the "Login Procedure" (function
11) under address word 03, "Brake electronics" page 01
-237
.
If no code is displayed, the "Login Procedure" under address word 03 "Brake Electronics" has
not been carried out yet.

Voltage at motor for ABS return flow pump:

off specified value, there is no voltage at the motor for the ABS return flow pump. on not permitted during "Read measuring value block", there is voltage at the motor for the ABS
return flow pump.
- Carry out "Electrical test", steps 12, 23 and 24.

ABS solenoid valve relay:

on specified value, relay was activated by ABS control module -J104- during ignition on. off not permitted during "Read measuring value block", the relay was not activated during "ignition on".
- Carry out "Electrical test", steps 11 and 22.
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Supply voltage for ABS control module -J104- at terminal 1:

Specification: 10.5 - 14.5 V
- If specified value is not obtained, carry out "Electrical test", step 21.
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pair&id=AUDI.B5.SU02.01.15

On Board Diagnostic (OBD) will be terminated by the ABS control module -J104- if road speed exceeds 19 km/h.
Pa
ge 41 of 64 Basic settin
g (scan tool function 04
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.SU02.01.15

01-280
Are you sure there are no electrical malfunctions
in the system? If you have made sure that there
are no electrical malfunctions in the system, you
will be able to identify any mechanical
malfunctions in the individual actuators if the
results of the output DTM are not as specified
here. Replace the relevant part.
With the Bosch 5.3 ABS/ESP the output
Diagnostic Test Mode (DTM) enables you to
check the electrically actuated hydraulic valves
and the pump motor in the hydraulic module. You
can also check that the brake lines going to the
four wheels are connected correctly.
Pa
ge 44 of 64 Basic settin
g (scan tool function 04
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.15