When the ignition key for the switch
H1
is
turned to the extreme position (AVV) [START], 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 the alternator
A10
(pin B+) is sent to the battery
A1
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
E30, pin 7.
Module
E30 receives a supply controlled
by the ignition (INT) at pin 13 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.