Radio, Telephone, Navigation, Trip Computer: Wiring Audi A6 C5 facelift

Checking wiring connection between radio and CD changer

1. Switch radio off.
2. Press and hold MODE button on "Concert" radio, or button No. 4 on "Symphony radio, and at same time switch radio on.
3. Release MODE/No. 4 button.

1. Wiring connection OK Indicated on radio display: "CONNECT" and "CD"
2. Wiring connection not OK

Indicated on radio display: "NO CDC"

1. Check electrical connections on CD changer.
2. Repeat wiring check and, if connection has still not been established, check wiring per wiring diagram. See appropriate System Wiring Diagram article.

Terminal assignments/harness connectors on Control module for navigation with CD mechanism -J401

Note. The following list refers to see scheme 73.

1. Connecting block with four multi-pin connections and a fuse
2. Black 20-pin multi-pin connection I
3. Brown 8-pin multi-pin connection II
4. Black 8-pin multi-pin connection III
5. Red 10-pin multi-pin connection IV
6. Antenna connection GPS; connecting socket for navigation antenna.
7. Securing bracket for antenna connection

Scheme 415

Terminal assignment of multi-pin harness connectors I, II, III, IV on control module for navigation with CD drive -J401

Note. Terminals which are not listed are vacant/unassigned.