Adjustment Procedure Using ACC Setting Device (VAS 6430)
Adjustment Procedure Using ACC Setting Device (VAS 6430)
Special tools, testers and auxiliary items required
• ACC Adjustment Device (VAS 6430)
• Adjustment Tool (VAS 6190/2)
• Wheel alignment computer
• Before driving the vehicle onto the alignment stand, check whether there is a sufficiently large space between the vehicle and the (VAS 6430). The distance between the (VAS 6430) and the vehicle must be 120 cm ± 5 cm.
• If there is not sufficient space, drive vehicle backward on alignment stand in order to be able to use the corresponding space.
• Before performing the calibration procedure, check the position of the calibration mirror. The calibration mirror may need to be adapted before performing the calibration.
• The (VAS 6430) must be adapted before adjustment procedure. If this is done during the adjustment procedure, the pre-calibration on the (VAS 6430) must be repeated.
• Before beginning the adjustment, check the DTC memory and correct any malfunctions present.
The adjustment procedure is described here with the (VAS 6430).
•
If there was a previous axle alignment, the steps under "Calibration procedure without a previous axle alignment" should not performed.
Preparation work for calibrating and adjusting driver assist systems, refer to => [ Preparation Work for Calibrating and Adjusting Driver Assist Systems ] Service and Repair.
Calibration Procedure without a Previous Axle Alignment
- Connect battery charger.
- Select the ACC calibration button on the alignment computer.
- Mount the quick clamps to the rear wheels.
- Mount the measurement sensor to the rear wheels.
- Perform a wheel run-out compensation and the rear wheels.
• The (VAS 6430) must not be moved on the calibration beam.
Calibration Procedure with or without a Previous Axle Alignment
- Remove the right front air intake grille.
- Remove all dirt on the sensor lens.
- If necessary, remove the mirror installed at the center and install it all the way at the right near the vertical slits.
- Position (VAS 6430) at a distance - A - of 120 cm ± 5 cm from sensor lens to mirror surface.
- Install the front wheel measuring sensors - 1 - on the (VAS 6430).
- In area - A -, bring item - 2 - on rotary knob into alignment with marking on mirror (number 2 on rotary knob must face toward vehicle).
- Now align by sliding it sideways - arrows B - (VAS 6430) so that the laser beam is horizontally centered on the senor lens.
- Level the bubble levels - A - and - B - on the (VAS 6430) using the adjusting screws - 1 -, - 2 - and - 3 -.
- Adjust the mirror - 4 - using the crank - arrow - on the (VAS 6430) so the laser beam is vertically centered on the sensor lens.
- Adjust the same front axle individual toe settings using fine adjustment screw - 5 -.
- The difference between individual toe values must be less than 6' or they must be the same.
- Bring bubbles - 2 - on measurement sensor - 1 - into balance.
- Now using the laser beam - 3 - on the (VAS 6430) , check if the laser beam contacts sensor lens.
• If the laser beam still meets the sensor lens at this step after adjusting the same individual toe values, the (VAS 6430) is aligned correctly (positioned).
• If the laser beam does not meet the sensor lens, (VAS 6430) alignment must be performed again.
- Connect the vehicle diagnostic tester.
- Connect vehicle diagnostic tester to diagnostic connector.
- Switch vehicle diagnostic tester on.
Vehicle diagnostic tester is ready to operate when it displays operating modes in button fields.
- Switch on ignition.
- Touch Guided Fault Finding.
- Select in succession:
• Brand
• Type
• Model year
• Version
• Engine Code
- Confirm data entered.
Wait until the vehicle diagnostic tester has checked all available control modules in vehicle.
- Press the go to button and select "function/component selection".
Then
- Select the corresponding program in "Guided Functions".
Now follow instructions on screen to perform adjustment.
- Turn the (VAS 6190/2) in - direction of arrow A or B - and use the upper screw - 2 - and the lower screw - 1 - for precision adjustment in "Guided Fault Finding".
The ACC adjustment is only accepted if "actuator diagnosis ended" is displayed in vehicle diagnostic tester.
- Switch ignition off.
- Disconnect vehicle diagnostic tester connector from diagnostic connection.
- Disconnect battery charger.
- Install the air intake grille.