Volkswagen Workshop Service and Repair Manuals > Polo Mk3 > Vehicle electrics | Electrical system self-diagnosis | Self diagnosis, V.A.G Inspection Service | Self-diagnosis of automatic headlight range control | Performing self-diagnosis of automatic headlight range control

Reading fault memory > < Overview of available functions

Reading control unit version

Note

The following sequence is described for the fault reader -V.A.G 1551-, the sequence described in the chapter for the “vehicle diagnosis, testing and information system may also be used” → Chapter.

–	Connecting fault reader → Anchor.

–	Switch on ignition.

Indicated on display:

V.A.G - SELF-DIAGNOSIS              HELP

  1 - Rapid data transfer*

Indicated on display:

*) Appears alternately

–	Press key 1 for “Rapid data transfer” mode.

V.A.G - SELF-DIAGNOSIS              HELP

  2 - Flash code output*

Indicated on display:

–	Press key 5 twice. (Entering “55” selects the address word for “Headlight range control”).

Rapid data transfer                 HELP

Enter address word  XX

Indicated on display:

–	Confirm entry with Q key.

Rapid data transfer                    Q

55 Headlight range control

Indicated on display:

Rapid data transfer                    Q

Tester sends address word 55

Indicated on display:

t	Top line: Part No. of control unit → NoteSystem designation (Headlight range control), Version number → Note

t	Lower line: Code number

¹⁾	The part number and version number can deviate from the number indicated here on the display, e.g. due to part number amendment.

–	Press → key.

6N0907357 Headlight range contr. 0001 ->

Coding 00002                   WSC XXXXX

If the following display appears:

–	Press the HELP key to print out a list of possible fault causes.

–	After rectifying faults, enter address word 55 for headlight range control again and confirm with Q key.

Control unit not responding!        HELP

Indicated on display:

–	Press → key.

6N0907357 Headlight range contr. 0001 ->

Coding 00002                   WSC XXXXX

Indicated on display:

–	End output (function 06) → Chapter.

Rapid data transfer                 HELP

Select function XX

Vehicle electrics
Electrical system self-diagnosis / Self diagnosis, V.A.G Inspection Service
Self-diagnosis of automatic headlight range control / rforming_self-diagnosis_of_automatic_headlight_range_control/">Performing self-diagnosis of automatic headlight range control
Reading control unit version

Reading fault memory > < Overview of available functions