instrument cluster AUDI A4 1995 B5 / 1.G Brakes Output DTM 03 Workshop Manual

01-171

Terminal
Wire connection to component ...
10
Electrical connection to instrument cluster
Only for vehicles equipped with EDL. The time signals used to calculate standing time are transmitted via
this harness connector
11
K-wire 13
MMD signal (Masked Misfire Diagnostic)
For vehicles equipped with ASR, the SET signal (Specified Engine Torque) is also transmitted via this wiring
harness.
14
Brake light switch -F- 15
Voltage supply, terminal 15 16
Ground (GND) terminal 31 (ABS hydraulic pump -V64-) 17
Battery + (terminal 30) 18
Battery + (terminal 30) 19
Ground (GND) terminal 31 (ABS control module -J104-) 20
Traction control (ASR) indicator light activation
Only for vehicles equipped with ASR.
21
ABS/EDL warning light activation 23
Speed sensor output rear left
For vehicles with navigation system
Pa
ge 25 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-180

Function test: ABS/EDL warning light -K47-
Test step
VAG
1598
sockets Test of
Test
requirements
- Additional work
steps Specified value
Corrective action
8

Continuation: - Function of
ABS/EDL
warning light
-K47-. - Switch on
ignition ABS warning
light -K47- lights
up for two (2)
seconds and
then goes out.
Electrical Wiring Diagrams,
Troubleshooting & Component Locations - If ABS/EDL warning light does not come
on, check voltage of electrical system and
test wiring from terminal 21 of ABS control
module -J104- to instrument cluster for
short circuit to Ground (GND).
- The ABS/EDL warning lamp does not
switch off after 2 seconds. The red "brake
system malfunction" symbol lights up after
2 seconds. Check wire from terminal 21 of
ABS control module -J104- to instrument
cluster for short circuit to B+ and open
circuit.

Repair Manual, Electrical Equipment,
Repair Group 90.
- If vehicle voltage and wire from terminal
21 of ABS control module -J104- to
instrument cluster are OK there is a
malfunction in instrument cluster, LED or
bulb malfunctioning.
Pa
ge 35 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-182

Function test: Red brake warning symbol
Test step
VAG
1598/20
sockets Test of
Test requirements
- Additional work stepsSpecified value
Corrective action
9

Continuation: Function of red
"brake system
malfunction"
symbol - Connect VAG1551 scan
tool and select address
word 03
- For vehicles with
automatic transmission and
high-line instrument cluster,
depress the brake pedal
and select a driving gear. The ABS indicator lamp
and the red "brake system
malfunction" symbol light
up. If the traction control
indicator light is installed
and OK, it also lights up. Repair Manual,
Electrical Equipment, Repair Group 90; instrument cluster.

- Malfunction in
instrument cluster
Pa
ge 37 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-184

Function test: Traction control indicator light -K86-, only installed on vehicles equipped with ASR
Test step
VAG
1598
sockets Test of
Test
requirements
- Additional work
steps Specified value
Corrective action
10

Continuation: - Function of
traction
control
indicator light
-K86- - Switch on
ignition Traction control
indicator light -K86-
comes on for two
(2) seconds and
then goes out.
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations - If traction control indicator light does
not light up, check vehicle voltage and
wire from terminal 20 of ABS control
module -J104- to instrument cluster for
short circuit to B+ and open circuit.
- If traction control indicator lights
continuously, test wire from terminal 20
of ABS control module -J104- to
instrument cluster for short circuit to
Ground (GND).

Repair Manual, Electrical Equipment,
Repair Group 90; instrument cluster.
- If vehicle voltage and wire from
terminal 20 of ABS control module -
J104- to instrument cluster are OK
there is a malfunction in instrument
cluster, LED or bulb malfunctioning.
Pa
ge 39 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-188

DTC
Possible cause
Corrective action
Printed output from
VAG1551 Scan Tool (ST)

00000
No malfunction recognized!
If this display appears,
process is concluded. No
DTCs are stored in DTC
memory.
If corresponding warning
lamps light up anyway, check
the following points:
Voltage supply for ABS control module -
J104- below 10.0 volts at a vehicle speed
less than 6 km/h. Open circuit in activation wire for ABS
warning light -K47- between ABS control
module (w/EDL) -J104- and instrument
cluster combination processor -J218-. - See section "Overview of indicator lamp
functions" page 01
-120
.
If no malfunction can be found, and there is still
a problem, there may be a mechanical
malfunction (e.g. solenoid valve sticking). - Expand troubleshooting to include
output Diagnostic Test Mode (DTM)
page 01
-149
and the "Electrical test"
page 01
-166
.
Pa
ge 43 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-195

DTC
Possible cause
Corrective action
Printed output from
VAG1551 Scan Tool
(ST)

00529
Wheel speed information
missing


This malfunction only
occurs if vehicle is
equipped with ASR. Data is transferred between the ABS
control module -J104- and the Engine
Control Module (ECM) via a single wire. For more information, see the section "Systems
related to ASR" page 01
-42
and the table
"Control module versions" page 01
-134
.
See continuation on next
page


Open circuit or short circuit to B+ or
Ground (GND) in wire between ABS
control module -J104- and Engine
Control Module (ECM). Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Locate and repair open circuit or short circuit.


Engine Control Module (ECM)
malfunctioning. - If the tachometer in the instrument cluster is
malfunctioning and no malfunctions can be found
in the wiring, the Engine Control Module (ECM)
is malfunctioning.

ABS control module -J104-
malfunctioning - If the tachometer in the instrument cluster
functions properly and no malfunctions can be
found in the wiring, the ABS control module
Pa
ge 54 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13

01-206

DTC
Possible cause
Corrective action
Printed output from
VAG1551 Scan Tool
(ST)

01203
ABS / instrument cluster
electrical connection

Open circuit/short circuit
to Ground (GND)
Short circuit to Ground (GND) or open circuit in wire
between instrument cluster and hydraulic control
unit, terminal 10.
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations - Check the wire for short circuit to
Ground (GND) and for open circuit.
Pa
ge 66 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.13