Audi A6 Typ 4G: Dynamic Steering

Overview - Dynamic Steering

1 - Active Steering Control Module -J792-

• The basic setting must be performed on the system if the Active Steering Control Module -J792- was replaced. Refer to → Chapter "Dynamic Steering Basic Setting".
• Removing and installing. Refer to → Chapter "Active Steering Control Module -J792-, Removing and Installing".

2 - Steering Column

• Removing and installing. Refer to → Chapter "Steering Column, Removing and Installing".

3 - Safety Lock for Active Steering

• Removing and installing. Refer to → Chapter "Active Steering Safety Lock (Locking Magnet), Removing and Installing".

4 - Actuator

• The actuator and steering column are one component and are replaced together.
• Must not be loosened or removed from the steering column.
• Perform a basic setting on the system if the actuator was replaced. Refer to → Chapter "Dynamic Steering Basic Setting".

Active Steering Control Module -J792-, Removing and Installing

Overview - Active Steering Control Module -J792-

1 - Nut, 2.5 Nm

2 - Bolt, 8 Nm

3 - Active Steering Control Module -J792-

4 - Connector, clipped to the wiring harness

5 - Ground (GND) Wire

6 - Bracket

Special tools and workshop equipment required

• Torque Wrench 1783 - 2-10Nm -VAG1783-
• Vehicle Diagnostic Tester

Removing

The Active Steering Control Module -J792- is located in the footwell in front of the driver seat.

- If the control module is being replaced, then select "replace" control module on the Vehicle Diagnostic Tester in Guided Functions.

- Loosen the driver seat and push it to the rear with the wires still connected. Refer to → Body Interior; Rep. Gr.72; Front Seats; Front Seat, Removing and Installing.

- Remove the floor mat.

- Remove the sill panel strip. Refer to → Body Interior; Rep. Gr.70; Passenger Compartment Trim; Sill Panel Strip, Removing and Installing.

- Remove the foot rest. Refer to → Body Interior; Rep. Gr.70; Passenger Compartment Trim; Foot Rest, Removing and Installing.

- Disengage the floor covering and push it to the side.

- Remove the Night Vision System Control Module -J853- E-box from the stud bolts, if equipped.

- Remove the nuts -6-.

- Remove the nuts -1- and remove the GND wire -2- from the threaded pin.

- Carefully disconnect the wiring harness clip connection -3- from the bracket -4-.

- Remove the bolts -5- from the control module -7- and remove the bracket -4-.

- Disconnect the wiring harness connector -3- from the control module -7-.

Installing

Install in reverse order of removal. Note the following:

Follow the sequence when installing the control module:

- Attach the bracket -4- to the control module -7- with the bolts -5-.

- Connect the wiring harness connectors -3- to the control module -7-.

- Carefully slide the wiring harness clip connection -3- into the bracket -4-.

- Insert the control module with the bracket.

- Connect the GND wire -2- to the threaded pin and tighten the nuts -1-.

- Tighten the nuts -6-.

- If equipped, place the Night Vision System Control Module -J853- E-box with the 2 pins into the seat crossmember and place the front retainer over the stud bolt.

- The basic setting must be performed on the system if the Active Steering Control Module -J792- was replaced. Refer to → Chapter "Dynamic Steering Basic Setting".

Tightening Specifications

• Active Steering Control Module -J792-.

Dynamic Steering Basic Setting

Special tools and workshop equipment required

• Steering Wheel Scales -VAS6458-
• Vehicle Diagnostic Tester
• Wheel Alignment Computer

There Are Two Choices for Performing a Basic Setting on the Dynamic Steering:

The "Quick Access"

This procedure should be selected for the following activities if only the basic setting will be performed.

• The Active Steering Control Module -J792- was replaced,
• The Steering Angle Sensor -G85- was calibrated,
• The steering column was replaced,
• The steering wheel is at an angle when driving straight.

The "Complete Alignment"

This procedure should be selected for the following activities if a basic setting and a suspension adjustment will be performed.

• The front axle toe was adjusted,
• The rear axle toe was adjusted,
• The vehicle suspension was changed, for example, changing from standard to sport suspension.

  Note

• Both procedures are programmed into the axle alignment computer.
• The respective procedure is performed automatically.
• It is only necessary to select the appropriate program for the procedure that will be performed.

  Note

Before starting the basic setting, the Steering Angle Sensor -G85- must be calibrated using the Steering Wheel Scales -VAS6458-.

Preparation Work for Calibrating and Adjusting Driver Assist Systems. Refer to → Chapter "Preparation Work for Calibrating and Adjusting Driver Assist Systems".

- Select the basic setting procedure for dynamic steering in the alignment computer.

- Install the quick clamps on all four wheels.

- Install the measurement sensors on the front and rear wheels.

- Perform wheel run-out compensation. Refer to → Chapter "Wheel Run-Out Compensation".

  Note

• Disregard the steering wheel position when doing this.
• Only the display on the alignment computer is valid.

Perform Any Subsequent Work Using the Vehicle Diagnostic Tester.

- Turn on the ignition.

- Touch Guided Fault Finding on the touch screen.

- Select the following in this order:

• Brand
• Type
• Model year
• Version
• Engine Code

- Confirm the entered data.

Wait until the Vehicle Diagnostic Tester has checked all the vehicle control module.

- Press the GO TO button and select "function/component selection".

- Select the program in Guided Functions.

Follow the instructions on the screen to perform the basic setting.

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