194001549 - E3510 RADIO - FUNCTIONAL DESCRIPTION (HI-FI)

The radio P20 is supplied directly (4 of connector A) from the battery via the line protected by fuse F23 of the engine compartment junction unit B001 .Pins 1 and 3 of connector A are served by the CAN that connects the radio to the Body Computer M001 (pins 24 and 25 of connector H) and to the other system nodes. Pin 8 of connector A is earthed.The radio P020 is connected, via the CAN, to the radio controls on the steering wheel in the steering wheel control unit M093 - pins 1 and 5 - via the clock spring D047 (pins 3 and 4).The aerial P025 is connected to the radio by means of the special coaxial cable.The amplifier P070 is supplied directly by the battery, at pin C8, by the line protected by fuse F54 of the luggage compartment junction unit B045. Pin C1 is earthed.The radio P020 and the amplifier P070 are connected as follows:- from pins 5 and 6 of connector B of P020 to pins C7 and B7 of P070 to manage - pins A6 and A7 - the driver''s front speakers P035 (mid-woofers) and P045 (tweeters);- from pins 3 and 4 of connector B of P020 to pins C6 and B6 of P070 to manage - pins A4 and A5 - the passenger side front speakers P036 (mid-woofer) and P046 (tweeter);- from pins 7 and 8 of connector B of P020 to pins C5 and B5 of P070 to manage - pins A2 and A3 - the left rear speakers P040 (mid-woofer) and P047(tweeter);- from pins 1 and 2 of connector B of P020 to pins C4 and B4 of P070 to manage - pins B2 and B3 - the right rear speakers P041 (mid-woofer) and P048(tweeter);- from pin 6 of connector C of P020 to pin C2 of P070 for the enablement signal to switch on the amplifier;- from pin 2 of connector A of P020 to pin C3 of P070 for the signal for the recognition of the actual amplifier;The rear sub-woofer P049 is housed inside the amplifier P070.The connecting cables for the CD-Changer P075 come out of connector E of P020.The connecting cables for the preparation for the telephone come out of connector D.    See E3580 PREPARATION FOR CELLULAR TELEPHONE