The switch
I30
is controlled by the
ignition (INT) from the line for fuse
F4
of the additional
fuse box
B 98 B
: when the brake pedal is pressed, the switch closes
and sends the operating signal to the check device inside the rev
counter
E15
(pin 5 of connector A).
The supply for the check device inside
E15
arrives directly from the battery (maxifuse B99) at pins 10 and
16 of connector A, through fuses F2 and F3 of the junction unit
B1;
The former protects the left hand lighting circuits, the
latter protects the right hand circuits.
The check device thereby controls the supply
(pin 18 and pin 13 of connector A) for the side brake lights in
the rear light clusters
F30
and
F31
.
In the case of failures in the circuit,
the 'lights failure' warning light - inside
E15 - comes on, with
the supply controlled by the ignition (IINT), pin 15 of connector
A, of the line protected by fuse F4 of the additional fuse box B98B.
The switch
I30
sends the signal for
operating the centre rear light cluster
F40
via the junction
unit
B1
(pin 18, connector D and pin 14 of connector E).
The braking signal for the switch
I30
is sent from the switch to the ABS
See
E7020
ABS
and - on some
versions - to the engine management control unit as well
See
E5030
PETROL ENGINE ELECTRONIC MANAGEMENT
.