Automatic Headlight Automatic Vertical Aim Control

Automatic Vertical Headlight Aim Control On Board Diagnostic (OBD), Initiating

Additional information
- Wiring Diagrams
- Technical Bulletins

Scan Tool (ST) and test equipment safety precautions

WARNING:
- Due to weight, size and need for manual operation of test instruments while vehicle is driven on public roads, instrument must be used only with a Driver operating the vehicle and an Instrument Operator operating the test equipment.
- Do not use Instrument with Driver only. Always use two persons to conduct test.
- Do not place Instrument on lap of Driver or front seat passenger because emergency stop may dislodge Instrument and cause airbag deployment with risk of injury to Instrument Operator.
- Use of Instrument in Audi TT Coup:
- Place Instrument in rear seating area and secure by available safety belt.
- Instrument Operator must be seated in the other rear seating position, after sliding front passenger seat and moving the seat back as far forward as possible. Do not activate the seat back release lever.
- Instrument Operator must wear safety belt.
- Use of Instrument in Audi TT Roadster:
- Use only Instrument VAG 1551 Scan Tool (ST) or VAS 5052 Vehicle Diagnostic and Service System. DO NOT USE VAS 5051.
- Before test, deactivate passenger's airbag using key operated switch in glove compartment.
- Instrument Operator must be seated on passenger seat with safety belt worn.
- Place Instrument in foot well in front of passenger seat in a manner allowing the Operator to use the Instrument in a safe manner.
- After completion of test, re-activate front passenger airbag.

CAUTION:
To prevent damage to electronic and electrical components, note the following:
- Always switch off the ignition before connecting or disconnecting test instruments.
- During some of the tests the control module may identify and record DTCs. The Diagnostic Trouble Code DTC) memory should therefore be checked and (if necessary) erased after completing the tests and any repair work that may be required.

Test requirements
- Check fuses using wiring diagram
- Connect VAG 1551/1552 Scan Tool, VAS 5051 Vehicle Diagnostic, Testing and Information System or VAS 5052 Vehicle Diagnostic and Service System.
- Ignition switched on

NOTE:
- If the display remains blank, check voltage supply of VAG 1551 according to wiring diagram.
- Additional operating instructions can be called up with the scan tool HELP button.
- The -> button serves to advance the program sequence.
- If an incorrect entry is made, press button C to escape.
- In the operating mode 1 "Rapid data transfer" the function 00 can be used to perform an "Automatic test sequence." This will check all control modules in the vehicle automatically.

- Switch on printer with the Print button (indicator lamp lights up).
- Press button -1- for "Rapid data transfer" mode.

Indicated on display:

Rapid data transfer HELP
Input address word XX

Automatic vertical headlight aim control address word: 55

- Press buttons -5- and -5- to enter "Head lamp vertical aim control system" address word

Indicated on display:

Rapid data transfer Q
55 - H. lamp. vert. aim ctrl.sys

- Press -Q- button to confirm input.

Indicated on display (example only): (after about 5 seconds)

4B0907357 Vertical Aim Control D003 ->
Coding 00009 WSC 06812

- Automatic vertical headlight aim control system control module identification: 4B0907357
- Software version: D003
- Control module coding: 00009
- WSC 06812: dealer number

- Press -> button.
- If one of these four messages is displayed, carry out troubleshooting procedures.

Indicated on display:

Rapid data transfer HELP
Error in communication link

Rapid data transfer HELP
K-wire not switching to Ground

Rapid data transfer HELP
K-wire not switching to B+

Rapid data transfer HELP
Select function XX

- Press HELP button to print list of possible functions.
- Press -> button to continue.

On Board Diagnostic (OBD) functions
The following functions are possible:
01 - Check control module version
02 - Check DTC Memory Check DTC Memory (Scan Tool Function 02)
03 - Output Diagnostic Test Mode Output Diagnostic Test Mode (DTM) (Function 03)
04 - Basic Setting Basic Setting (Function 04)
05 - Erase DTC Memory Erase DTC Memory (Scan Tool Function 05)
06 - End Output End Output (Function 06)
07 - Code Control Module
08 - Read Measuring Value Block Measuring Value Blocks (Function 08)