wiring AUDI A4 2000 B5 / 1.G Multi Functions Steering Wheel OBD Workshop Manual

01-84


Multi-function steering wheel,
On Board Diagnostic (OBD)

General notes


Technical features of the multi-function
steering wheel
The multi-function steering wheel enables the
radio to be operated from the steering wheel (the
most important functions) and contains an
extensive On Board Diagnostic (OBD).
The control module for the multi-function steering
wheel is equipped with a DTC memory. When
malfunctions occur in monitored components or
wiring, Diagnostic Trouble Codes (DTCs) are
stored in DTC memory with a description of the
malfunction type.
Pa
ge 1 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3

01-85

On Board Diagnostic (OBD), initiating
program


Additional information

Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder
Technical service handbook.
Parts catalog
Pa
ge 2 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3

01-88

Test requirements

Check fuse for function according to wiring
diagram.
Connect VAS5051 tester or VAG1551 scan tool
page 01
-108
.

Switch ignition on.

Notes:
If nothing is indicated on display, check voltage
supply for VAG 1551 scan tool according to
wiring diagram.
Additional instructions can be called up via the
HELP button on the scan tool.
The button is used for advancing through the
program sequence.

An incorrect entry can be canceled using the C
button.
Function 00 "Automatic test sequence" can be
performed in operating mode 1 "Rapid data
transfer". This automatically checks all control
Pa
ge 5 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3

01-90

4B0907487E Steerin
g whl. electronics D00

Indicated on display after approx. 5 seconds:
4B0907487 E: Part number of steering wheel electronics - radio
operation (see also parts catalog) Steering wheel electronics: component markingD00: Software version of control module
-
Press button.
Rapid data transfer
HELP
Control module does not answer

If one of these messages is displayed, carry out trouble shooting
procedures according to the wiring diagram.
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Rapid data transfer
HELP
Error in communication link

Rapid data transfer
HELP
K wire not switching to Ground

Rapid data transfer
HELP
K wire not switching to B+

Pa
ge 8 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3

01-95
Diagnostic Trouble Code (DTC) table

Notes:

The following list contains all malfunctions that can be recognized by the multi-function steering wheel and printed out by
the VAG1551 scan tool. The malfunctions are listed in order according to their 5-digit numbers.
DTC numbers appear only on the print-out.
Before replacing a component shown as faulty, check the wiring and connections to the component as well as the Ground
(GND) connections according to wiring diagram.
After repairs and function test of the system, DTC memory must always be checked again using the VAG1551 scan tool
and erased.
DTC memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is
identified as a static malfunction. If a malfunction does not occur again, it is registered as sporadic. "/SP" will appear at the
right of the scan tool display.
When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will
only register as static malfunctions if they still occur after testing.
Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed 30
km/h) are erased automatically.
The three digit malfunction type number appearing next to the DTC is a data code and can be ignored.
Pa
ge 13 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3

01-96

DTC
VAG1551 scan tool
display Possible cause
Corrective action
01426
Control unit in steering
wheel -E221

No communication
Implausible signal
Open circuit in wiring - no connection between
interface and steering wheel
Unintelligible messages on CAN-bus (interface and
buttons in steering wheel are connected via a CAN-
bus) Electrical Wiring Diagrams,
Troubleshooting & Component
Locations - Locate malfunction using wiring
diagram
- Repair open circuit
- Check wires between interface and
steering wheel
65535
Control module
malfunctioning

Faulty
Control module for multi-function steering wheel -
J453- faulty - Replace control module for multi-
function steering wheel -J453-
Pa
ge 14 of 25 Multi-function steerin
g wheel, On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.3