LASER SENSOR (Laser Distance Regulation Control Module -J1122-), ADJUSTING

There are two choices for calibrating/adjusting:

The "complete alignment"

This procedure should be selected for the following activities if a wheel alignment and calibration/adjustment should be performed.

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

The "quick access"

This procedure should be selected for the following activities if only the adjustment/calibration will be performed.

• The test plan in the Vehicle Diagnostic Tester requires a readjustment.
• The Laser Distance Regulation Control Module -J1122- was removed and installed or replaced.
• The front bumper was removed and installed or replaced.
• The front bumper was loosened or adjusted.
• There is damage on the front bumper.
• The Drivetrain Control Module -J775- was calibrated or replaced.

TIP:

• Both procedures are programmed in the wheel alignment computer. The respective procedure is performed automatically. It is only necessary to select the appropriate program for the procedure that will be performed.
• If only the laser sensor calibration/adjustment should be performed, select the "quick start" mode on the wheel alignment computer.
• The procedure in the "quick access" mode is described in the following.

Special tools and workshop equipment required 

• Wheel Alignment Computer approved by VW/Audi
• Vehicle Diagnostic Tester
• Wheel Alignment Computer - Camera :VAS 701 001/1 
• Setting Device - Basic Set :VAS 6430/1  or Setting Device - Basic Set :VAS 6430/1A 
  Fig 1: Identifying Setting Device VAS 6430

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• Calibration Board Laser Scanner :VAS 6430/12  , not illustrated
• Line Laser Mount :VAS 6430/12-1  , not illustrated
• Calibration Tool - Linear Laser :VAS 6350/3A 
  Fig 2: Identifying Linear Laser

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• Torx T20 Screwdriver :T10072 
  Fig 3: Identifying Socket Wrench T 10072

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TIP:

The following illustrations above show the Setting Device - Basic Set :VAS 6430  together with the Setting Device Basic Set - Base Frame :VAS 6430/7  .

Procedure 

As an example, the procedure is described for the Wheel Alignment Computer :VAS 701 001  .

• Note the test requirements. Refer to the appropriate service information .
• Follow the measurement preparations for calibrating/adjusting the driver assistance systems. Refer to the appropriate service information .

-- Check the laser sensors and retainers for damage, external influence and secure fit. Service any damaged components.

-- Remove any dirt that may be on the laser sensor lens.

-- Check the front bumper cover for damage, cracks and secure fit. Service any damaged components.

-- Vehicle with rear axle steering: drive the vehicle "straight" onto the alignment rack. Switch off the ignition when the vehicle has come to a stop.

-- Steer the rear axle steering into zero position. Refer to the appropriate service information .

• This is the only way to ensure that the rear axle steering is in the straight-ahead position.

-- Vehicle with air suspension: adjust to standard vehicle height and lock. Refer to Air Suspension .

-- Check the DTC memory for adaptive cruise control (ACC). Fix all displayed entries.

-- Move the wheels so that they are straight.

-- Install quick-action clamps on the wheels.

-- Attach the reflectors to the quick-action clamps.

-- Perform the wheel run-out compensation.

-- Select the laser ACC calibration button in the wheel alignment computer.

• The ACC Setting Device must not be moved on the calibration beam.

-- Attach the Calibration Board Laser Scanner :VAS 6430/12  centered on the Setting Device - Basic Set :VAS 6430  .

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-- Place the Camera :VAS 701 001/1  -5- for the ACC adjustment on the Mount :VAS 6430/12-1  -2- on the right side and tighten.

1. Setting Device - Basic Set :VAS 6430/1A 
2. Mount :VAS 6430/12-1 
3. Calibration Board Laser Scanner :VAS 6430/12 
4. Calibration Tool - Linear Laser :VAS 6350/3A 
5. Wheel Alignment Computer - Camera :VAS 701 001/1 

-- Position the Setting Device - Basic Set :VAS 6430  at distance -a- from the edge of the crossbar -black line- to the Audi rings.

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• Dimension -a- = 130 to 132.5 cm (51.18 to 52.17 in.)

-- Using the adjusting screws -1, 2, and 3- bring the bubble levels -A and B- on the rear side of the Calibration Board Laser Scanner :VAS 6430/12  into a level position.

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-- Switch on the Calibration Tool - Lineal Laser :VAS 6350/3A  and insert it in the Mounting :VAS 6430/12-1  so that the lineal laser beam exits horizontally.

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• The smooth, non-corrugated surface of the Calibration Tool - Lineal Laser :VAS 6350/3A  -arrow- that is shown in blue in the illustration above must face toward the horizontal arrow -1- on the Mounting :VAS 6430/12-1  .

-- Engage the Mounting :VAS 6430/12-1  with Calibration Tool - Lineal Laser :VAS 6350/3A  on the center of the Calibration Board - Laser Scanner :VAS 6430/12  .

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-- Adjust the Calibration Board - Laser Scanner :VAS 6430/12  using the crank -1- on the : VAS 6430  so that the lineal laser beam -3- meets the laser sensor lens -2- on the vehicle at the horizontal bend point on the lens.

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-- Remove the Mounting :VAS 6430/12-1  with Calibration Tool - Lineal Laser :VAS 6350/3A  on the center of the Calibration Board - Laser Scanner :VAS 6430/12  .

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-- Rotate the Calibration Tool - Linear Laser :VAS 6350/3A  90° so that the lineal laser beam exits vertically. Insert the Calibration Tool - Linear Laser :VAS 6350/3A  all the way back into the Mounting :VAS 6430/12-1  .

• The smooth, non-corrugated surface of the Calibration Tool - Lineal Laser :VAS 6350/3A  -arrow- must face toward the vertical arrow -2- on the Mounting :VAS 6430/12-1  .

-- Engage the Mounting :VAS 6430/12-1  with Calibration Tool - Lineal Laser : VAS 6350/3A  on the center of the Calibration Board - Laser Scanner :VAS 6430/12  again.

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-- Move the Setting Device - Basic Set :VAS 6430  to the side in the direction of -arrow- until the lineal laser beam -3- hits the vertical center of the Audi rings -2-.

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-- Turn the fine adjustment screw -1- until the display on the wheel alignment computer is within the tolerance range.

-- Check again:

• If the lineal laser beam from the Calibration Tool - Linear Laser :VAS 6350/3A  hits the vertical center of the Audi rings.
• If the lineal laser beam from the Calibration Tool - Linear Laser :VAS 6350/3A  hits at the horizontal bend point on the laser sensor lens.

• If the lineal laser beam from the Calibration Tool - Linear Laser :VAS 6350/3A  hits the vertical center of the Audi rings after adjusting it with the fine adjustment screw, the : VAS 6430  is set up (positioned) correctly.
• If the lineal laser beam does not hit the vertical center of the Audi rings, the Setting Device - Basic Set :VAS 6430  must be set up again.

• For the rest of the procedure, the Mounting :VAS 6430/12-1  with the Calibration Tool - Linear Laser :VAS 6350/3A  must be removed from the Setting Device - Basic Set :VAS 6430  .

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Diagnostic-capable systems
• 00CD - Laser Distance Regulation Control Module J1122
• 00CD - Laser Distance Regulation Control Module, functions
• 00CD - Calibrate control module

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

-- The Laser Distance Regulation Control Module -J1122- fine adjustment -2- is made using the screw -1- and the Torx T20 Screwdriver :T10072  .

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-- Switch the ignition off.

-- Disconnect the Vehicle Diagnostic Tester from the diagnostic connector.

-- Disconnect the battery charger. Refer to BATTERY A, CHARGING .