Automatic vertical headlight aim control On Board Diagnostic (OBD), initiating
Additional information
- Wiring Diagrams
- Technical Bulletins
Scan Tool (ST) and test equipment safety precautions
- 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.
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. Refer to VAG 1551/1552 Scan Tool (ST), VAS 5051 Vehicle Diagnostic Testing and Information System or VAS 5052 Vehicle Diagnostic and Service System, connecting and selecting functions
- Ignition switched on
- 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.
| Rapid data transfer HELP Input address word XX |
Indicated on display:
Automatic vertical headlight aim control address word: 55
- Press buttons -5- and -5- to enter "Head lamp vertical aim control system" address word 55.
| Rapid data transfer Q 55 - H. lamp. vert. aim ctrl.sys |
Indicated on display:
- Press -Q- button to confirm input.
| 4B0907357 Vertical Aim Control D003 → Coding 00009 WSC 06812 |
Indicated on display (example only): (after about 5 seconds)
- 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. Refer to Wiring Diagrams, Troubleshooting & Component Locations binder.
| 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 |
Indicated on display:
- 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. Refer to Diagnostic Trouble Code (DTC) Memory, checking (function 02)
03 - Output Diagnostic Test Mode. Refer to Output Diagnostic Test Mode (DTM) (function 03)
04 - Basic Setting. Refer to Basic Setting (function 04)
05 - Erase DTC Memory. Refer to Diagnostic Trouble Code (DTC) Memory, erasing (function 05)
06 - End Output. Refer to End Output (function 06)
07 - Code Control Module. Refer to Code Control Module (function 07)
08 - Read Measuring Value Block. Refer to Read Measuring Value Block (function 08)