3363781 - E3510 RADIO - Functional description

Functional description

The radio P20 is supplied directly (7 of connector A) from the battery via the line of fuse F39 of the unit under the dashboard B2. Pin 4 of connector A receives a supply from the INT line protected by fuse 49 of control unit B2. Pins 1 and 3 of connector A receive the CAN line with which the radio P20 is connected to the Body Computer M1 and the other nodes of the system. Pin 8 of connector A is earthed. The aerial P25 is connected to the radio also via the specific coaxial cable.

Connector B sends out cables carrying signals to the speakers:

• pins 5 and 6 to left front loudspeakers P35 and P45 ,
• pins 3 and 4 to the right front loudspeakers P36 and P46 ,
• pins 7 and 8 to the left rear loudspeaker P30 ,
• pins 1 and 2 to the right rear loudspeaker P31 ,

Radio P20 is not connected to the radio controls on the steering wheel: the connection is via the clock spring D47, which is a node of the CAN network. See E1050  CAN CONNECTION LINES