When the ignition key in the switch H1 is
turned to the extreme position (START) - pin 50 - the winding of
the solenoid - pin 50 - of the starter motor
A20
is supplied.
This supply comes from the battery via the
line of maxifuse IGN of
B5
.
However, this supply only occurs in the
presence of an enablement signal - from pin 42 of connector A of
the SELESPEED control unit
M54
(while pin 76 of connector
B of
M54
receives the starting request signal); The starting
enablement relay
J05, with a supply controlled by the ignition
(15/54) from the line protected by fuse F11 of the engine compartment
junction unit B1A, sends a power supply to pin 50 of the starter
motor A20;
The supply controlled by the ignition (15/54)
reaches pin 28 of connector A of
M54
.
See E7051 ROBOTIZED GEARBOX
.
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
, passing
through the motor
A20
. When the alternator does not turn,
and so does not recharge the battery, an earth signal is sent from
pin D+ to the Body Computer - pin 19 of connector A: this is connected
via the CAN line to the instrument panel
E50
and manages, as
described above, the switching on of the recharging warning light
on the instrument panel
E50
.