Audi A4. Body repair manual - part 63
Multi-function steering wheel, On Board Diagnostic (OBD)
DTC
Possible cause
Corrective action
VAG1551 scan tool
display
01426
Control unit in steering
Open circuit in wiring - no connection between
- Locate malfunction using wiring
wheel -E221
interface and steering wheel
diagram
No communication
Unintelligible messages on CAN-bus (interface and
Electrical Wiring Diagrams,
buttons in steering wheel are connected via a CAN-
Troubleshooting & Component
Implausible signal
bus)
Locations
- Repair open circuit
- Check wires between interface and
steering wheel
65535
Control module
Control module for multi-function steering wheel -
- Replace control module for multi-
malfunctioning
J453- faulty
function steering wheel -J453-
Faulty
Multi-function steering wheel, On Board Diagnostic (OBD)
Output Diagnostic Test Mode (DTM)
(scan tool function 03)
Notes:
Output Diagnostic Test Mode is only possible
when vehicle is stationary and engine is not
running!
If malfunctions are found during output
Diagnostic Test Mode, determine cause of
malfunction and repair if necessary.
In the function " output Diagnostic Test Mode
(DTM)" functions of the system are checked
Perform Output Diagnostic Test Mode
- Switch ignition on.
- Switch on radio.
- Press buttons -0- and -3-. This selects "output
Diagnostic Test Mode (DTM)", function 3.
Rapid data transfer
Q
Indicated on display
03 - Output Diagnostic Test Mode
- Press -Q- button to confirm input.
Multi-function steering wheel, On Board Diagnostic (OBD)
- Press the button.
Output Diagnostic Test Mode
Indicated on display
Radio louder
The radio volume is increased audibly.
- Press the button.
Output Diagnostic Test Mode
Indicated on display
Radio quieter
The radio volume is decreased audibly.
- Press the button.
Output Diagnostic Test Mode
Indicated on display
Search radio stations upward
The next station will be searched and displayed in combination center
display.
- Press the button.
Multi-function steering wheel, On Board Diagnostic (OBD)
Output Diagnostic Test Mode
Indicated on display
Search radio stations downward
The previous station will be adjusted again and will be displayed in
combination center display.
- Press the button.
Output Diagnostic Test Mode
Indicated on display
End
- Press the button.
- The tester returns to the "Select function" mode.
Rapid data transfer
HELP
Indicated on display
Select function XX
Multi-function steering wheel, On Board Diagnostic (OBD)
Erase DTC Memory (scan tool function
05)
Note:
If DTC memory cannot be erased, check DTC
memory again and repair malfunction.
Requirements
DTC memory checked page 01-93
All malfunctions repaired
After successful DTC memory check:
Rapid data transfer
HELP
Indicated on display
Select function XX
- Press buttons -0- and -5-. This selects "Erase DTC memory", function
05.
Multi-function steering wheel, On Board Diagnostic (OBD)
Rapid data transfer
Q
Indicated on display
05 Erase DTC Memory
- Confirm input using the -Q- button.
Rapid data transfer
Indicated on display
DTC Memory is erased!
DTC memory is erased.
- Press the button.
Rapid data transfer
HELP
Indicated on display
Select function XX
Notes:
Attention!
This message indicates an error in the test sequence.
DTC Memory was not interrogated
Rapid data transfer
This message indicates an error in the test sequence.
DTC Memory was not interrogated
Follow test sequence exactly: first check DTC memory, repair malfunction
(s) if necessary, then erase.
Multi-function steering wheel, On Board Diagnostic (OBD)
End Output (scan tool function 06)
- Press buttons -0- and -6-. This selects "End
Output", function 06.
Rapid data transfer
Q
Indicated on display
06 - End output
- Confirm input using the -Q- button.
Rapid data transfer
HELP
Indicated on display
Insert address word XX
- Switch ignition off.
- Disconnect harness connectors for the VAG1551 scan tool
Multi-function steering wheel, On Board Diagnostic (OBD)
Read Measuring Value Block (scan tool
function 08)
Initiating "Read Measuring Value Block"
Rapid data transfer
HELP
Indicated on display
Select function XX
- Press buttons -0- and -8- to select "Read Measuring Value Block"
function 08.
Rapid data transfer
Q
Indicated on display
08 - Read Measuring Value Block
- Confirm input using the -Q- button.
Read Measuring Value Block
Indicated on display
Input display group number XXX
- Input display group number (from table page 01-104 ) and press -Q-
button to confirm input.
The selected measuring value block is now displayed in standard form.
Multi-function steering wheel, On Board Diagnostic (OBD)
Display group overview
Display group
Indicated on display
number
001
1 = Lower button
2 = Louder button
3 = Memory downward
button
4 = Memory upward button
002
1 = Station buttons (preset)
backward
2 = Station buttons (preset)
forward
3 = Unassigned
4 = Unassigned
Multi-function steering wheel, On Board Diagnostic (OBD)
Measuring value block 001
Read Measuring Value Block 1
Indicated on display:
lower louder Memory backward Memory upward
Memory upward button
not operated
Memory upward
Memory downward button
not operated
Memory downward
Louder-button (increasing volume)
not operated
louder
Lower button (decreasing volume)
not operated
lower
Multi-function steering wheel, On Board Diagnostic (OBD)
Measuring value block 002
Read Measuring Value Block 2
Indicated on display:
activated
activated
Station buttons (preset) forward
not operated
operated
Station buttons (preset) backward
not operated
operated
Multi-function steering wheel, On Board Diagnostic (OBD)
Multi-function steering wheel button
assignment
Radio button assignment
1 - Radio: Forward search function; Cassette: Fast forward; CD: Title
forward
2 - Radio: Backward search function; Cassette: Rewind; CD: Title
backward
3 - Station buttons (preset) b backward
4 - Increase volume
5 - Decrease volume
6 - Station buttons (preset) forward
Cruise control On Board Diagnostic (OBD)
Cruise control On Board
Diagnostic (OBD)
Special tools, test equipment and auxiliary
items
VAS5051 Diagnostic Operation Center (DOC)
and/or VAG1551 Scan Tool (ST).
VAG1551/3 adapter cable