Performing zero compensation of steering angle sender G85 — AUDI

Performing zero compensation of
steering angle sender
G85
Perform zero compensation of steering angle sender after removing steering wheel, after performing adjustment on the running gear during wheel alignment and after renewing the
ABS with EDL control unit
J104
, the
steering angle sender
G85
or the steering column, or if zero compensation is required in fault tables.
Procedure
Requirement:
ABS with EDL control unit
J104
properly coded
Chapter
.
Start the engine.
Turn the steering wheel approx. 60° to left or right and back again until the front wheels are in straight-ahead position and the steering wheel is positioned horizontally (tolerance ± 4.5°).
Perform short road test on a level surface. Drive in a straight line and not faster than 20 km/h and observe the following points.
If the steering wheel is not horizontal:
Make the necessary adjustments by checking wheel alignment and fit steering wheel in correct position
Running gear, front-wheel drive and four-wheel drive
Rep. Gr.
44
, then perform zero compensation.
If the steering wheel is horizontal during the road test:
Bring the vehicle to a standstill - still keeping it in a straight line.
Do not change position of steering wheel!
Do not switch off ignition!
Connect
vehicle diagnostic, testing and information system
VAS 5051 A
Chapter
and select vehicle system
“03 - Brake electronics”
. When doing this the ignition must be switched on.
Indicated on
VAS 5051 A
:
From list
1
select diagnostic function
“11 - Login procedure”
or
“11 - Coding II”
.
Indicated on
VAS 5051 A
:
1
Enter code word
Use keypad
2
to enter code
“40168”
and confirm entry by touching
Q
key.
Note
If display on
VAS 5051 A
reads
“function unknown or function can not be performed at present”
the login procedure or coding II were not successful. Repeat login procedure or coding II.
Terminate function
“11 - Login procedure”
or
“11 - Coding II”
by touching
←
key.
Indicated on
VAS 5051 A
:
From list
1
, select function
“04 - Basic setting”
.
Indicated on
VAS 5051 A
:
1
Enter display group
Use keypad
2
to enter
“060”
for
“display group number 060”
and confirm by pressing the
Q
key.
The
ABS warning lamp
K47
flashes.
Indicated on
VAS 5051 A
:
A
Basic setting
B
Display group 60
1
Zero compensation OK
4
0.0°
Zero compensation of
steering angle sender
G85
is now completed.
Terminate function
“04 - Basic setting”
by pressing the
←
key.
Note
After you press function
“06 - End output”
, the
ABS warning lamp
K47
and the
traction control system warning lamp
K86
light up for approx. two seconds.
Possible fault messages:
Indicated on
VAS 5051 A
:
1
Zero compensation is not possible
4
12.3°
The determined value is outside the tolerance range for zero compensation.
Proceed as follows to rectify the fault:
Check zero position of
steering angle sender
G85
in measured value block 004
Anchor
.
Interrogate fault memory
Chapter
.
Erase fault memory
Chapter
.
Conclude the transfer of data with the function
“06 - End output”
.
Switch off ignition.
Switch ignition on again.
Perform zero compensation again.