Initiating & Checking Control Module Versions

Test Requirements

- Check fuses using wiring diagram
- Connect VAG 1551 /1552 Scan Tool or VAS 5051 Vehicle Diagnostic, Testing and Information 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 55.

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 (=> parts catalog microfiche)
- Software version: D003
- Control module coding: 00009
- WSC 06812: dealer number
- Press -> button.

Rapid data transfer HELP
Control Module does not answer

If one of these four messages is displayed, carry out troubleshooting procedures. Refer to Wiring Diagrams.

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+

Indicated on display:

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
03 - Output Diagnostic Test Mode
04 - Basic Setting
05 - Erase DTC Memory
06 - End Output
07 - Code Control Module
08 - Read Measuring Value Block