When the ignition key for the switch
H1
is
turned to the extreme position (AVV) the solenoid winding (pin 50)
of the starter motor
A20
is supplied.
This supply comes from the battery via the
line of maxifuse IGN of
B99
.
This supply is only present if there is
a safety signal - from pin 42 of connector A of
M54
- which
energizes the starting enablement relay
J05
, which thus supplies
power to pin 50 of the starter motor
A20
; pin 76 of connector
B of
M54
receives the starting request signal.
Pin 30 of
A20
, the actual starter
motor, receives the voltage coming directly from the battery
A1
.
The direct current generated by alternator
A10
(pin
B+) is directed to battery
A1
, passing through motor
A20
.
When the alternator is not turning and therefore not recharging
the battery, an earth signal is sent from pin D+ to the rev counter
module
E15
, pin 7 of connector B.
Module
E15
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
: when this
signal arrives, the "recharging" warning light comes on.
When the engine has been started up this
signal becomes 12 V and the warning light goes out.