The supply for the rev counter module
E15
reaches
pins 10 and 16 of connector A directly from the battery. (maxifuse
J/B2 of
B99
) via fuses
F2
and
F3
of junction
unit
B1
; this supply is used by the check device for the
exterior lights.
Rev counter module
E15
also receives
a supply controlled by the ignition (INT) at pin 15 of connector
A from the line protected by fuse
F4
of the additional fuse
box
B98B
. Pin 14 of connector A is earthed.
The engine rpm signal, which is different
for each engine type, comes from the engine management control unit
M10
to
pin 6 of connector B.
In particular, for the SELESPEED version,
the line - pin 12 of connector B of module
E15
- connecting
to the gearbox management control unit
M54,
is used for the
instrument's gear indicator display and the 'automatic transmission fault'
warning light.
The control for the buzzer, located in the
instrument
E15
, leaves pin 13 of connector B of the module
E15
.
The SELESPEED
M54
control unit also
receives an engine rpm signal, coming from pin 8 of connector B
of module
E15
.
For all the other warning lights, refer
to the diagrams relating to the components to which they refer.