The ignition-operated power supply (INT) of the instrument panel
E50
reaches pin 3 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 for fuse
F53 of the junction
unit under the dashboard B2; pin 1 of connector A is earthed (earth
controlled by the Body Computer M1 pin 36 of connector G).
The instrument panel
E50 is connected
from pins 5 and 6 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 23 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 (positive) and 15 (negative) of
connector D of the Body Computer M1, and from here via CAN to the
instrument panel E50.
The low brake fluid/handbrake applied warning
light comes on through an earth signal from the handbrake switch
I40,
which reaches pin 24 of connector E of the Body Computer M1, or
from the earth signal from the low brake fluid level sensor K25,
which reaches pin 18 of connector A of M1.
The brake pad wear warning light is controlled
by an earth signal sent to pin 23 of connector B of body computer
M1
from the approriate sensor K20.
All these signals are transferred via CAN
to the instrument panel
E50
.
The 'MODE' '+' and '-' controls for unit
H91,
send analogue signals to the instrument panel E50, to pins 13 and
16 of connector B.
The TRIP function is shown in the relevant
diagram
See E4080 TRIP COMPUTER
.
Instrument panel
E50 also contains electronic
modules that control panel dimmed lighting and other controls
See
E2530
INSTRUMENT LIGHTING
,
headlamp alignment adjustment
See
E3080
HEADLAMP AGLINMENT CORRECTOR
and
the parking sensors buzzer
See
E3090
PARKING SENSOR
.