184002155 - E3510 RADIO - FUNCTIONAL DESCRIPTION (Connect)
Operational description
The radio P20 receives a direct power supply (7 of connector A) from the battery via the line for fuse F39 of the junction unit under the dashboard B2 .The radio P20 receives an ignition-operated (INT) power supply (pin 4 of connector A) via the line for fuse F49 of the junction unit under the dashboard B2 .Pins 1 and 3 of connector A receive the CAN line by which the radio P20 is connected to Body Computer M1 and the other system nodes. See E1050 CAN CONNECTION LINES. Pin 8 of connector A is earthed.The radio P20 is connected to the radio controls on the steering wheel in the steering wheel control unit M93 which is a CAN "node" See E1050 CAN CONNECTION LINES; the connection takes place via the clock spring D47. The steering wheel control unit M93 receives an ignition-operated (INT) power supply -pin 5 - via the line for fuse F49 of the junction unit under the dashboard B2 .The aerial P25 is connected to the radio by means of the special coaxial cable.The following cables with signals for the speakers leave connector B of P20:
- pins 5 and 6 to the left front speakers P35 and P45,
- pins 3 and 4 to the right front speakers P36 and P46,
- pins 7 and 8 to the left rear speaker P30
- pins 1 and 2 to the right rear speaker P31