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

Special tools and workshop equipment required 

• Wheel Alignment Computer approved by VW/Audi
• Vehicle Diagnostic Tester
• Wheel Alignment Computer - Camera: VAS701001/1 
• Setting Device - Basic Set: VAS6430/1  or Setting Device - Basic Set: VAS6430/1A 
• Calibration Board Laser Scanner: VAS6430/12  , not illustrated
• Line Laser Mount: VAS6430/12-1  , not illustrated
• Calibration Tool - Linear Laser: VAS6350/3A 
• Torx T20 Screwdriver: T10072 

There are two options that can be selected for the calibration/adjustment:

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 guide"

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 calibration.
• 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 moved.
• There is damage to the front bumper.
• The Drivetrain Control Module -J775- was calibrated or replaced.

TIP:

• Both procedures are programmed in the wheel alignment computer. The procedure is automatically performed. The corresponding program for the procedure to be performed must be selected.
• 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 start" mode is described in the information that follows.

TIP:

The following illustrations show the Setting Device - Basic Set: VAS6430  together with the Setting Device Basic Set - Base Frame: VAS6430/7  .

Procedure 

As an example, the procedure is described for the Wheel Alignment Computer: VAS701001  .

• Note the test requirements. Refer to AXLE ALIGNMENT TEST REQUIREMENTS .
• Follow the measurement preparations for calibrating/adjusting the driver assistance systems. Refer to MEASUREMENT PREPARATIONS .

-- Check the laser sensors and retainers for damage, external influence and secure fit. Service 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 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 to the zero position. Refer to Rear Axle Steering .

• 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). Correct all displayed entries.

-- Move the wheels so that they are in a straight-ahead position.

-- Install quick-action clamps on the wheels.

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

-- Carry out wheel run-out compensation.

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

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

-- Attach the Calibration Board Laser Scanner: VAS6430/12  centered on the Setting Device - Basic Set: VAS6430  .

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-- Place the Camera: VAS701001/1  -5- for the ACC adjustment on the Mount: VAS6430/12-1  -2- on the right side and tighten.

1. Setting Device - Basic Set: VAS6430/1A 
2. Mount: VAS6430/12-1 
3. Calibration Board Laser Scanner: VAS6430/12 
4. Calibration Tool - Linear Laser: VAS6350/3A 
5. Wheel Alignment Computer - Camera: VAS701001/1 

-- Position the Setting Device - Basic Set: VAS6430  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

-- 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: VAS6430/12  into a level position.

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-- Switch on the Calibration Tool - Lineal Laser: VAS6350/3A  and insert it in the Mounting: VAS6430/12-1  so that the lineal laser beam exits horizontally.

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• The smooth, non-corrugated surface of the Calibration Tool - Lineal Laser: VAS6350/3A  -arrow- that is shown in blue in the illustration must face toward the horizontal arrow -1- on the Mounting: VAS6430/12-1  .

-- Engage the Mounting: VAS6430/12-1  with Calibration Tool - Lineal Laser: VAS6350/3A  on the center of the Calibration Board - Laser Scanner: VAS6430/12  .

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-- Adjust the Calibration Board - Laser Scanner: VAS6430/12  using the crank -1- on the : VAS6430  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: VAS6430/12-1  with Calibration Tool - Lineal Laser: VAS6350/3A  on the center of the Calibration Board - Laser Scanner: VAS6430/12  .

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-- Rotate the Calibration Tool - Linear Laser: VAS6350/3A  90° so that the lineal laser beam exits vertically. Insert the Calibration Tool - Linear Laser: VAS6350/3A  all the way back into the Mounting: VAS6430/12-1  .

• The smooth, non-corrugated surface of the Calibration Tool - Lineal Laser: VAS6350/3A  -arrow- must face toward the vertical arrow -2- on the Mounting: VAS6430/12-1  .

-- Engage the Mounting: VAS6430/12-1  with Calibration Tool - Lineal Laser: VAS6350/3A  on the center of the Calibration Board - Laser Scanner: VAS6430/12  again.

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-- Move the Setting Device - Basic Set: VAS6430  to the side -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: VAS6350/3A  hits the vertical center of the Audi rings.
• If the lineal laser beam from the Calibration Tool - Linear Laser: VAS6350/3A  hits at the horizontal bend point on the laser sensor lens.

• If the lineal laser beam from the Calibration Tool - Linear Laser: VAS6350/3A  hits the vertical center of the Audi rings after adjusting it with the fine adjustment screw, the : VAS6430  is set up (positioned) correctly.
• If the lineal laser beam does not hit the vertical center of the Audi rings, the : VAS6430  must be set up again.

• For the rest of the procedure, the Mounting: VAS6430/12-1  with the Calibration Tool - Linear Laser: VAS6350/3A  must be removed from the Setting Device - Basic Set: VAS6430  .

-- 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 off the ignition.

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

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