Audi Workshop Service and Repair Manuals > A3 Mk1 > Vehicle electrics | Radio, Telephone and Navigation System, Self-diagnosis | Self diagnosis, V.A.G Inspection Service | Self-diagnosis of navigation system Nav IV (BNS 4.0) as of week 04/01 | Final control diagnosis

Final control diagnosis procedure

–	Press keys 0 and 3 (03 is used to select “Final control diagnosis” function).

Indicated on display:

–	Confirm entry by pressing Q key.

Rapid data transfer                    Q

03 - Final control diagnosis

Indicated on display:

Loudspeaker is briefly energised (not audible).

–	Press → key.

Final control diagnosis               ->

Loudspeaker

Indicated on display:

Sound can be heard at loudspeaker for approx. three seconds.

–	Press → key.

Final control diagnosis               ->

Telephone/ navigation system loudspeaker R39

Indicated on display:

Dash panel insert displays the following test pattern:

Final control diagnosis               ->

Output Radio display/dash panel insert


DISPLAY TEST

Display switches between normal and inverse every 4 seconds.

–	Press → key.

Indicated on display:

–	Press → key.

This returns tester to basic function.

Final control diagnosis               ->

End

Indicated on display:

Rapid data transfer                HELP

Select function XX

Audi Workshop Service and Repair Manuals