184002167 - E3510 RADIO - FUNCTIONAL DESCRIPTION (HI-FI, Connect)
Operational description
The radio P20 is supplied directly (pin 2 and 7 of connector A) from the battery via the line for fuse F39 of underfacia control unit B2 .The radio P20 receives an ignition-controlled supply (INT) (pin 4 of connector A) via the line for fuse F49 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.A connection lead runs from connector E of P20 to CD player P75 .Amplifer P70 is supplied directly from the battery - at pin 1 - via the line of fuse F54 of supplementary fuse box B98 ; i pin 2 of amplifier P70 and to earth.Pin 6 of P70 is connected via a line to radio P20 pin 6 of connector C which supplies a positive signal to enable ignition.The other signals leaving the BOSE amplifier P70 control the speakers:
- pins 31 and 32 to the left front speakers P35 and P45,
- pins 26 and 27 to the right front speakers P36 and P46,
- pins 4 and 16 to the left rear speaker P30,
- pins 5 and 17 to the right rear speaker P31