3026195 - E3510 RADIO - Functional description (Impianto BOSE, 5 porte, Guida a destra, GTA)

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 B1 and the maxifuse CPL of B99 .

Functional description

The radio P20 is supplied directly (7 of connector A) from the battery via the line of fuse F39 of the junction unit under the dashboard B2 of maxifuse CPL1 of B5.

Functional description

Another specific supply reaches pin 2 of connector A, to indicate the presence of the Bose Hi Fi system. The supply to the side lights on reaches pin 4 of connector A  See E2530  INSTRUMENT LIGHTING . 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 supplied from pin 5 of connector A. The aerial is connected to the radio also via the specific coaxial cable.

The cables with the signals to the loudspeakers com out of connector B; these signals are sent to the amplifier BOSE P70, which controls the loudspeakers:

• pins 3 and 4 to the left front speaker P35 ;
• pins 5 and 6 to the left front loudspeaker P35 ,
• pins 7 and 8 to the left rear loudspeaker P30 ,
• pins 1 and 2 to the right rear loudspeaker P31 ,

Pins 10 and 11 of connector C are connected to the radio controls on the steering wheel: the connection is via the clock spring D47 ; the device which controls the control buttons receives a supply controlled by the ignition (INT) from the line protected by the fuse F51 of the unit under the dashboard B2 , while the reference earth arrives from pin 12 of connector C of P20 . The amplifier P70 is supplied directly from the battery - at pin H of connector B through the line of fuse F2 of B1 and specific fuse F61 of the additional fuse box B98. It is then connected - from pin B11 of connector A - with a specific line to the radio P20 - pin 6 of connector C - which sends the signal to switch on the amplifier.

Functional description

On the 5 door version pin B1 of connector A of P70 also receives the enablement signal (in this way the amplifier is informed of the version of the vehicle on which it is installed).

Functional description

Pin A of connector B of P70 is earthed. The other signals coming from the BOSE amplifier P70 control, as described above, the loudspeakers of the basic system. In addition, the signals that control the rear subwoofer P49 leave from pins F-C and G-B of connector B of P70.