3239414 - E4023 DASHBOARD CENTRE AUXILIARY EQUIPMENT() - Functional description
Functional description
The supply for the centre module
E20
arrives
directly from the battery. (maxifuse J/B1 of
B99
) to pin
2 via fuse
F10
of junction unit
B1
; the supply controlled
by the ignition (INT) reaches pin 1 of the line protected by fuse
F4
of
the additional fuse box
B98B
.
Pin 3 is earthed.
The standard engine temperature sender unit
K36
sends
a signal proportional to the temperature of the engine coolant (pin
1) to pin 10 of
E20
. The minimum temperature signal, on the
other hand, arrives at pin 9 of
E20
from the engine control
unit
M10
, depending on the different engine types.
Pins 4 and 5 of the centre instrument
E20
receive
signals (positive and negative) coming from the fuel gauge
N40
located
in the fuel pump assembly.
Pin 11 of
E20
sends a 'fuel reserve'
signal to the engine management control unit
M10
(petrol
engines only).