The ignition-operated power supply (INT)
for the electronics of the two headlsmps
F10 and F11 reaches
pin 6 through the line of fuse F37 of the unit under the dashboard
B2, whilst pin 14 of F10 and F11 is earthed.
Pins 8 of
F10 and F11 are connected to
one another (serial communication line between MASTER and SLAVE),
whilst pin 13 of the control unit located in headlamp F10 receives
the speedometer signal from pin 28 connector A of the Body Computer
M1.
Headlamp
F10 incorporates the headlamp
alignment function: the two sensors (potentiometers) that record
the alignment at the front K1 and the rear K2 are connected: a supply and
reference earth are sent from pins 9 and 10 of F10: the signals
proportional to the load return to pins 11 and 12;
on the basis
of these signals, the electronics for the headlamp automatically
adjusts the light beam by means of a special motor (the motor for
the left headlamp is adjusted directly, the one for the right headlamps
via the serial line between
F10A and F11A).
Self-diagnostic data can be read by connecting
the unit to connector G of Body Computer
M1- pin 12: this receives
signals from pins 7 of F10 and F11 via the special diagnostic line.