Downloaded from www.Manualslib.com manuals search engine 91-2
Before troubleshooting or servicing, technicians
must be familiar with the functions and operation
specifics of the applicable standard or optional
radio system. Always read the radio owner's
manual and review all radio, tape player and CD
player/changer functions.
Notes:
When retrofitting, repairing or
troubleshooting:
Electrical Wiring Diagrams, Troubleshooting &
Component Locations
Radio installation instructions
For detailed instructions (e.g. removing and
installing trim panels):
Repair Manual, Body Interior, Repair Group
70
Wherever possible, only genuine Audi parts
should be used. Only then can trouble-free
installation and optimal reception be
guaranteed.
All radio systems have anti-theft coding.
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Downloaded from www.Manualslib.com manuals search engine 91-51
2. Wiring not OK
Indicated on radio display:
"NO CDC"
- Check electrical connections at CD changer.
- Repeat wiring test and, if the wiring is not OK,
use wiring diagrams to check wiring.
Electrical Wiring Diagrams Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
