The supply to the speedometer module
E10
reaches
pin 9 of connector A directly from the battery (maxifuse J/B1of
B99
)
via fuse
F10
of the junction unit
B1
; the supply controlled
by the ignition (INT) reaches pin 10 of connector A from the line
protected by fuse
F4
of the additional fuse box
B98B
.
Pin 1 of connector A is earthed.
The ABS control unit
M50
sends the
speedometer signal to pin 11 of connector A of
E10
.
The speedometer signal is resent from pin
15 of connector A towards the climate control system control unit
M70.
A fuel consumption signal is sent from pin
16 of connector A towards the engine management control unit
M10.
Functional description
The signals for the handbrake switch
I40
and
brake fluid level sensor
K25
both reach pin 7 of connector
A of
E10
.and from there are re-sent to the check module
E30 See E4022 CENTRE INSTRUMENT (CHECK)
.
The earth signals which provide information
on the state of wear of the brake pads, coming from sensor
K20,
reach
pin 11 of connector B of
E10
.
The zeroing signal for the trip meter reaches
pin 12 of connector B from
H10
; an earth signal from
E10
reaches
pin 6 of connector B; according to the logic processed by the internal
electronic device, the speedometer receives the side lights on signal
at pin 5 of connector B and sends the lighting signal to the other
instruments: to the centre instrument
E20
from pin 12 of
connector A; and to the rev counter
E15
from pin 4 of connector
B
See E2530 INSTRUMENT LIGHTING
.
A signal reaches pin 3 of connector B from
the left front door switch
N50
which signals that the door
is open.
Pin 2 of connector A of
E10
receives
an earth signal from switch
I45
, located on the driver's
seat belt, whichindicates that the belt is fastened.
Pin 8 of connector B of
E10
receives
the engine rpm signal from the rev counter
E15
.
A serial line connects module
E10
-
from pin 8 of connector A - to the Infocenter module
E63
.
Pins 2 and 7 of connector B receive (positive
and negative) signals coming from the fuel gauge
N40
located
in the fuel pump assembly: these signals are then sent again - from
pins 9 and 10 of connector B - to the centre instrument
E20 See E4023 DASHBOARD CENTRE AUXILIARY EQUIPMENT()
.
Functional description
The information concerning the engine oil
level arrives from sensor
K32
at pins 5 and 13 of connector
A of
E10
and is sent again from pin 8 of connector A to module
E63
which displays it.
Functional description
For all the other warning lights, refer
to the diagrams for the components to which they refer.