18-Pin Connector

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Microphone 1, positive
Microphone 1, shield
Not Assigned
Right Rear Audio (+), only RCD 550
Left Rear Audio (+), only RCD 550
Right Front Audio (+), only RCD 550
Left Front Audio (+), only RCD 550
Not Assigned
CAN Bus Infotainment (CAN-High), only RCD 550
Microphone 1, negative
Not Assigned
Not Assigned
Right Rear Audio (-), only RCD 550
Left Rear Audio (-), only RCD 550
Right Front Audio (-), only RCD 550
Left Front Audio (-), only RCD 550
Ground/Ring break diagnosis (CAN-Bus Ground on RCD 550, Ring break diagnosis on RNS 850)
CAN Bus Infotainment (CAN-Low), only RCD 550