3026145 - E2012 MAIN BEAM HEADLAMPS - Functional description
Functional description
The main beam headlamps activation signal is sent to pin 33 of
connector B of the Body Computer
M1
from the steering column
switch unit
H5
.
The 'key in ON position' signal (INT) from
the switch
H1
reaches the underdashboard control unit
B2
at pin 11 of connector H and from there moves on to the Body Computer M1
(pin 9 of connector F).
The Body Computer
M1
controls the
supply to the main beam headlamps by sending an earth signal to
the engine compartment control unit
B1
- from pin 9 of connector
A of
M1
- which energizes the relay T2: this supplies the
dipped headlamps F10 (left) and
F11
(right). Each circuit
is protected by a control unit B1 fuse:
F15
for the left
headlamp and
F14
for the right one.
The Body Computer
M1
is connected,
via the CAN line, to the instrument panel
E50
to manage
the main beam headlamps warning light.