Audi Workshop Service and Repair Manuals > A3 Mk1 > Vehicle electrics | Radio, Telephone and Navigation System, Self-diagnosis | Self diagnosis, V.A.G Inspection Service | Radio system self-diagnosis (as of MY 98) | Reading measured value block

List of display groups up to MY 01

Display group number	Indicated on display
001	1 = GALA (vehicle speed signal) level 2 = Voltage terminal 30 3 = Illumination dimming 4 = S-contact status
002	1 = Front loudspeaker 2 = Front loudspeaker status 3 = Rear loudspeaker 4 = Rear loudspeaker status
003	1 = Type of aerial 2 = Aerial 3 = Aerial status
004	1 = Active amplifier control output 3 = Telephone 4 = Telephone mute input status
005	1 = CD link 2 = CD link status
006	1 = Ext. display (dash panel insert) 2 = Status of ext. display

Audi Workshop Service and Repair Manuals