Heads Up Display Unit: Testing and Inspection

Windshield Projection Head Up Display Control Module (J898), Calibrating

Special tools, testers and auxiliary items required

• Head-up display calibration board Audi A6 (VAS 6657)

- The windshield projection head up display control module (J898) must be calibrated in "Guided Fault Finding" or "Guided Functions" using the Vehicle Diagnostic Tester:

• The windshield projection head up display control module was replaced.

• The windshield was removed and installed.

• The DTC "no or incorrect basic setting/adaptation" is stored in the DTC memory.

Procedure






- Move the vehicle onto a secure flat surface.

- Set the parking brake - the vehicle must not move during the measuring.

- Fold down the left and right sun visors, disengage them and move them to the side.

- Attach the (VAS 6657) calibration device to the center retainers - 1 and 2 - for the sun visors.

Procedure

- Connect the Vehicle Diagnostic Tester and in the "Guided Fault Finding" or "Guided Functions" mode, select the function windshield projection head up display control module (J898).

• After selecting calibrate "windshield projection control module", select the path "height calibration".

- Follow the instructions in the Vehicle Diagnostic Tester display.

- After calibrating the windshield projection control module successfully, end "calibration", turn off the ignition and disconnect the diagnostic connector.