Zero position compensation of steering angle sender -G85 — AUDI

Zero position compensation of steering angle sender must be performed with an accuracy of ± 5 degrees.

Zero position compensation for steering angle sender -G85 is necessary:

If control unit -J104, steering angle sender -G85 or the steering column are replaced.
After encoding control unit -J104,
If suspension geometry is adjusted when checking wheel alignment.
If there is a fault in the fault memory of control unit -J104 and the instructions in the fault table require the zero position compensation to be carried out.

Start the vehicle.
Turn steering wheel one turn to the right and one turn to the left.
Perform short test drive on even surface. Drive in a straight line on a level surface at a speed not higher than 20 km/h.
If the steering wheel is straight during the test drive then stop the vehicle from the forward drive.
Perform zero position compensation (refer to next page but one).

Ensure that the steering wheel is not moved again.
Do not switch off the ignition.

Or:

If test drive reveals steering wheel to be not properly centred make the necessary adjustments by checking wheel alignment => FWD and 4WD Running Gear; Repair group 44.
Perform zero position compensation (refer to next page).

Ensure that the steering wheel is not moved again.
Do not switch off the ignition.

Connect up vehicle diagnostic, testing and information system VAS 5051/fault reader V.A.G 1551 and select "Brake electronics" with address word 03 => Page
01-4
.

Rapid data transfer
HELP
Select function XX
Indicated on display:

Press 1 twice to select the function "Login procedure".

Rapid data transfer
Q
11 - Login procedure
Indicated on display:

Confirm input with Q key.

Login procedure
Q
Enter code number XXXXX
Indicated on display:

Enter code number 40168 and confirm entry with Q key.

Rapid data transfer
HELP
Select function XX
Indicated on display:

Press keys 0 and 4 to select function "Basic setting".

Rapid data transfer
Q
04 - Basic setting
Indicated on display:

Confirm input with Q key.

Basic setting
Q
Enter display group number XXX
Indicated on display:

Press keys 0, 0 and 1 and confirm entry by pressing Q.

Function unknown or cannot
⇒
be carried out at present.
If this display appears, this means the function "Login procedure" has not been performed successfully.

System in basic setting
1⇒
Steer. angle sender compens.
OK
Indicated on display:

Check zero position by way of function 08 "Read measured value block", => Page
01-204

Or:

System in basic setting
1⇒
Steer. angle sender compens.
not OK
Indicated on display:

Interrogate fault memory =>Page
01-296
Delete fault memory => Page
01-12
Switch ignition off.
Switch the ignition on.
Perform zero position compensation again.
Go back to the initial settings of the program by pressing the ⇒ key:

Rapid data transfer
HELP
Select function XX
Indicated on display:

Or:

System in basic setting
1⇒
Steer. angle sender compens.
Disabled
Indicated on display:

Steering wheel has not been given one turn to right and one turn to left.

Switch ignition off.
Switch the ignition on.
Perform zero position compensation again.
Go back to the initial settings of the program by pressing the ⇒ key:

Rapid data transfer
HELP
Select function XX
Indicated on display: