The supply for the centre module
E20
arrives
directly from the battery. (maxifuse
J/B1
of
B5
) to
pin 2 via fuse
F10
of the junction unit
B1
. the supply controlled
by the ignition (INT) reaches pin 1 from the line protected by fuse
B11
.
Pin 3 is earthed.
Functional description
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
.
Functional description
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 unit.