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 16 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 connector
D 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 zeroing 'SET' button,
located on the steering column switch unit
H5, sends an earth
signal to pin 16 of connector B of E50.