The ignition-operated power supply (INT) of the instrument panel
E50
reaches pin 1 of connector A through the line of fuse F37 of the
unit under the dashboard
B2
; the direct supply reaches pin
2 of connector A through the line of fuse F53 of the unit under
the dashboard
B2
; pin 7 of connector A is earthed (earth
controlled by the Body Computer
M1
).
The instrument panel
E50
is connected
from pins 3 and 4 of connector A to the Body Computer
M1
and via the latter to the whole CAN network: via CAN the signal
for the electronic speedometer arrives (coming from the ABS control
unit
M50
): this signal is replicated from pin 37 of
M50
to pin 7 of connector A of the Body Computer
M1
.
The electronic rev counter receives the
rpm signal coming via CAN from the engine management control unit
M10
.
The fuel gauge is controlled in accordance
with the signals coming from the fuel gauge sender unit located
in the fuel pump assembly
N40
- at pins 4 and 15 of the
Body Computer
M1
, and from here via CAN to the instrument
panel
E50
.
The TRIP electronic module uses these signals
to process instantaneous and average fuel consumption information,
range, average speed, mileage, duration etc.
The Trip Computer 'SET' button, located
on the stalk unit H5, sends an earth signal to pin 8 of connector
A of
E50
.