939011678 - E3510 RADIO - FUNCTIONAL DESCRIPTION (Connect Nav+)

FUNCTIONAL DESCRIPTION

Radio P20 is supplied directly (7 of connector A) from the battery via the line of fuse F23 of the engine compartment junction unit B1 .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 .Pin 8 of connector A is earthed.Pins 1 and 3 of connector A receive the CAN line by which the radio P20 is connected to the Body Computer M1 and the other system nodes.The radio P20 is connected, via the CAN, to the radio controls on the steering wheel, via the clock spring D47.    See E1050 CAN CONNECTION LINES 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 speakers P30 and P47;- pins 1 and 2 to the right rear speakers P31 and P48;The 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:. this cable, is divided into two sections: one under the dashboard and one under the passenger compartment lining (coupling D96).