light AUDI A4 2000 B5 / 1.G Brakes Output DTM 03 User Guide

01-183

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 stepsSpecified
value Corrective
action
10 - Function of traction
control indicator light -
K86- DTC memory checked and no DTC
present in DTC memory of ABS control
module -J104-. Ignition switched off Multi-pin connector connected to ABS
control module -J104- and retainer catch
engaged.
Test step 10: Continued on
next page.
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gnostic Test Mode
(DTM
) (function 03
)
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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
)
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01-185

Function test: Traction control button; set measurement range on VAG1526: 20 V =
Test
step VAG
1598
sockets Test of
Test requirements
- Additional work stepsSpecified value
Corrective action
11 - Function of
traction control
button Ignition switched off Function of traction control
indicator light -K86- was
already checked in step 10. Multi-pin connector connected
to ABS control module -J104-
and retainer catch engaged.
- Switch on ignition

- Press traction control buttonTraction control
indicator light -
K86- lights up - Switch off ignition.
- Detach multi-pin
connector from ABS control
module -J104- and remove.

- Press traction control button
again Traction control
indicator light -
K86- goes out. - Connect VAG1598 test
box using VAG1598/27
adapter.
Test step 11: Continued on next page.
Pa
ge 40 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
)
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01-194

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

00526
Brake light switch -F-
Open circuit

Both brake lights -M9- (left) and -
M10- (right) malfunctioning.
Wire from brake lights to control
module faulty.
ABS control module -J104-
malfunctioning
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Check brake light switch, "Read measuring value
block", display group 2 page 01
-140
.
- Locate and repair open circuit or short circuit.
- Replace bulbs.
Pa
ge 53 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
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01-197

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

00532
Voltage supply
Signal too small

Notes:

This malfunction affects the voltage supply
of the control module.
This DTC is only stored, if the malfunction
occurs at a vehicle speed above 6 km/h.
As soon as vehicle voltage is within the
valid voltage range again, the ABS/EDL or
ASR system is switched back on and the
warning lights turn off.
Open circuit or contact resistance
too high between voltage supply
from terminal 15 hydraulic control
unit, terminal 15. Voltage jumps in vehicle system.
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations
Electrical Wiring Diagrams,
Troubleshooting & Component
Locations
Repair Manual, Electrical
Equipment, Repair Group 27.
- Carry out "Electrical test", step
1 page 01
-166
.
- Locate and repair open circuit
in voltage supply. - Check Generator (GEN) and
Voltage Regulator (VR). - Check battery

Malfunction in hydraulic control unit- If no malfunctions can be
found in the voltage supply,
replace hydraulic control unit.
Pa
ge 57 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