ignition AUDI A4 1996 B5 / 1.G Brakes Output DTM 03 User Guide

01-181

Function test: Red brake warning symbol
Test
step VAG
1598
sockets Test of
Test requirements
- Additional work stepsSpecified
value Corrective
action
9 - Function of red "brake
system malfunction"
symbol
Repair Manual, Brake System, Repair
Group 47

Brake fluid level is OK Function of ABS warning light -K47-
already checked in step 8. Multi-pin connector connected to ABS
control module -J104- and retainer catch
engaged. Switch on ignition
Test step 9: Continued on
next page.
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(DTM
) (function 03
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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.
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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.
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ge 40 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
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01-186

Function test: Traction control button; set measurement range on VAG1526: 20 V =
Test step
VAG
1598
sockets Test of
Test requirements
- Additional work
steps Specified
value Corrective action
11 19 + 31 Function of
traction control
button Ignition switched
on.
Continuation:
- Traction control
button not pressed 0.0 -0.5 V

- Traction control
button pressed 10.0 - 14.5
V
Electrical Wiring Diagrams,
Troubleshooting & Component Locations
- Check wire from terminal 19 to Ground
(GND).
- Check wire from terminal 31 to traction
control button, terminal 6.
- Check voltage supply from terminal 5
of traction control button to terminal 15.
- If no malfunctions can be found using
the procedures in these steps, replace
the traction control button.
Pa
ge 41 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
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01-187
Diagnostic Trouble Code (DTC) table

Notes:

Fulfill test requirements page 01
-22
.
Connect the VAG1551 Scan Tool (ST) and select "Brake Electronics" via address word 03 page 01
-4 .
Check the control module version page 01
-128
and press the button.
Press buttons -0- and -2- to select "Check DTC Memory" function 02. Press -Q- button to confirm input.
Notes:
Each malfunction is assigned a 5-digit Diagnostic Trouble Code (DTC). The DTC is located in the left column of the DTC
table. If you have switched the printer on by pressing the "PRINT" button, the VAG1551 scan tool (ST) prints the message
identifying the malfunction and the DTC. Otherwise, DTCs are not displayed by the VAG1551 scan tool.
The contents of DTC memory remain stored until memory is erased, page 01
-15
.
Sporadically occurring malfunctions are identified via indication of "/SP" on the right-hand side of the display.
Static malfunctions that cannot be detected when the vehicle is stationary are also identified with "/SP" if the ignition has
been switched off and then on again.
The following DTC table includes all the DTCs that can be stored by the ABS control module -J104- and displayed and
printed out by the VAS5051 tester or VAG1551 scan tool. Malfunctions are listed by DTC number.
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gnostic Test Mode
(DTM
) (function 03
)
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01-193

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

00301
ABS return flow pump -V39 -
Malfunction in hydraulic
control unit - Erase DTC memory page 01
-15
- End Output page 01
-16
.
- Switch off ignition.
- Switch on ignition

- If malfunction occurs again, replace hydraulic
control unit.
Pa
ge 52 of 66 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
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yp
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