3315543 - E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS - Functional description (Right hand drive)
Functional description
The direction indicators and hazard warning
lights are controlled by an electronic intermittence device
R2
located
in junction unit
B1
.
The supply for the device reaches pin 6
directly from the battery (maxifuse CENTR of
B5
) via fuse
F8
of junction unit
B1
; Pin 2 is earthed.
Hazard warning light operation is controlled
by a switch located in unit
H35
:when the button is pressed,
an earth signal is sent to pin 3 of device
R2
of
B1
.
Pin 2 of
H35
is operated when the
ignition is turned on (INT/A) via fuse F5 of junction unit
B1
;
this line is responsible for lighting up control panel
H35
.
The turn signals are activated by stalk
unit
H5
.
The supply is controlled by the ignition
(INT/A) via fuse
F1
of junction unit
B1
; when the
lever is operated in both directions, a signal is sent to pin 7
(left side arrows) and pin 1 (right side arrows) for device
R2
of
B1
.
Intermittent device
R2
of
B1
generates two signals that supply the turn signals: the right hand
signal from pin 5 (
F11
,
F21
,
F31
); the
left hand one from pin 4 (
F10
,
F20
,
F30
).
When a trailer is connected, a signal is
sent from pin 8 to a special warning light located in the instrument
panel
E50
.
The tail-lights in clusters
F30
and
F31
are not conventional bulbs but electronic leds.
A special direction indicator control unit
M83
is therefore
fitted. This monitors tail-light activation signals to detect anomalies
and controls the various warning lights.
The supply for device
M83
reaches
pin 6 directly from the battery (maxifuse CENTR of
B5
) via
fuse
F8
of junction unit
B1
; Pin 8 is earthed.
Pins 10 and 7 receive signals from device
R2
of
B1
for right and left hand side operation.
The device is connected to the turn signals:
located in clusters
F30
and
F31
with two feedbacksignals
from pins 1 and 2.
The warning lights for the direction indicators,
located inside the instrument panel
E50
, are also operated
by pins 11 and 17; the red LED in switch
H35
, which lights
up the ideogram with the hazard warning lights switched on, is operated
by pin 16.
All the hazard warning lights are also operated
by the alarm system control unit
M30
(pins 1 and 2 of connector
B), which is connected directly to the light power supply (
See E7021 ASR / TCS
).