3315688 - E4090 NAVIGATOR - Functional description
Functional description
ICS display
E60
displays the navigator and on-board computer
functions.
The
navigation system
is controlled
by a special navigator control unit
M90.The on-board computer function is performed
by the electronic circuitry of display E60, which receives the necessary
information from other devices on the car.
Navigator control unit
M90
is supplied
directly by the battery. (maxifuse CENTR of
B5
) - to pin
14 - through fuse F18 of junction unit
B1
.
Pin 1 of
N90
is earthed.
Pin 3 receives a speedometer signal from
instrument
E50
- pin 6 of connector B.
Pin 4 receives a reverse engagement signal
(see
See E2022 REVERSING LIGHTS
).
Control unit M90 communicates with
the ICS display E60 via numerous lines:
- pin 2 receives an ignition signal;
- pins 8, 9, 10, 22 and 23 control screen signals;
- pins 13 and 26 handle audio signals;
- all the other information is exchanged by serial lines
leading from pins 5 and 7.
Control unit
M90
is equipped with
a self-diagnostic system that can be used by connecting the unit
to connector
R10
. The unit receives signals from the serial
connection line between control unit
M90
and ICS display
E60
,
which is connected - pin 1 of connector B - to
R10
.
'On-board computer' function is performed
by the electronic system of display E60 , which processes information
form the various systems and the climate control unit H80.
Direct power line from the battery. (maxifuse
CENTR of
B5
) through fuse
F18
of junction unit
B1
and
supplies ICS display
E60
- to pins 13 and 26 of connector
A.
Ignition-operated power supply (INT/A) reaches
pin 2 of connector B of ICS display
E60
through fuse
F5
of junction unit
B1
.
Another ignition-operated supply (15/54) reaches pin 3 of connector
B of
E60
through fuse
F7
of junction unit
B1
.
Climate control system
H80
and ICS
display
E60
are connected from pin 8 of
H80
to pin
15 of connector B of
E60
via a special serial connection
line.
Pin 4 of climate control unit
H80
receives a speedometer signal from instrument
E50
- pin
6 of connector B. The same signal is also directed to display
E60
- pin 24 of connector A.
Pins 10 and 11 of climate control unit
H80
receives
signals from fuel level measuring device
N40
, that are processed
to compute fuel consumption.(the signals are fom the gauge on the
instrument panel (see
See E4010 INSTRUMENT PANEL
).
Pin 23 of connector A of
E60
receives a fuel consumption
signal if engine management unit
M10
allows for it.