3026196 - E3570 INTEGRATED RADIO PHONE - Functional description (Radiotelefono)
Functional description
The integrated radio-telephone-navigator
P20
is supplied directly (7 of connector A) by the battery via the line
of fuse F39 of the unit under the dashboard
B2
and maxifuse
CPL of
B99
.
The supply to 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 display
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 GSM aerial is connected to the telephone
function also via the appropriate coaxial cable.
Connector B of P20 is the source of the
cables carrying signals to the loudspeakers used for the hands-free
function
See E3510 RADIO
.
Pins 10 and 11 of connector C of
P20
are connected to the steering wheel controls: 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 fuse F51 of the unit under the dashboard
B2
,
while the reference earth comes from pin 12 of connector C of
P20
.
Pins 9 and 18 of connector D of
P20
are connected to the microphone
P26
; pin 12 of connector
D is earthed.
The external telephone receiver
P27
is supplied via the line of fuse F39 of the unit under the dashboard
B2
, and is connected to connector D of
P20
, at pins
6, 7, 8, 16 and 17.