184002119 - E3510 RADIO - FUNCTIONAL DESCRIPTION
Operational description
Radio P20 is supplied directly (4 of connector A) from a battery via the line of fuse F39 of underfacia control unit B2 .Pins 1 and 3 of connector A receive the CAN line by which radio P20 is connected to the Body Computer M1 and to the other system nodes See E1050 CAN CONNECTION LINES. Pin 8 of connector A is earthed.Radio P20 is connected to the radio controls on the steering wheel in the steering wheel control unit M93 which is a node on the CAN network See E1050 CAN CONNECTION LINES; the connection takes place via the clock spring D47 . Steering wheel control unit M93 is supplied via an ignition operated command (INT) - pin 5 - via a line of fuse F49 , of underfacia control unit B2 .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.