Dodge 2000 DURANGO Service Manual page 378

8J - 2 TURN SIGNAL AND HAZARD WARNING SYSTEMS
DESCRIPTION AND OPERATION (Continued)
lamps, and rear tail/stop/turn signal lamps to flash
on and off in unison.
See the owner's manual in the vehicle glove box for
more information on the features, use and operation
of the hazard warning system.
TURN SIGNAL SWITCH AND HAZARD
WARNING SWITCH
DESCRIPTION
The turn signal and hazard warning switches are
integral to the multi-function switch unit, which is
secured to the left side of the steering column (Fig.
1). The only visible parts of the multi-function switch
are the control stalk that extends from the left side
of the steering column, and the hazard warning
switch push button that protrudes from the top of
the steering column. The multi-function switch con-
trol stalk has both nomenclature and international
control symbols on it, which identify its many func-
tions. The hazard warning switch push button is
identified with a double triangle, which is the inter-
national control symbol for hazard warning. The
remainder of the multi-function switch is concealed
beneath the steering column shrouds.
The multi-function switch also contains circuitry
for the following functions:
• Headlamp beam selection
• Headlamp optical horn
• Windshield wipers
• Windshield washers.
Fig. 1 Multi-Function Switch
1 – WINDSHIELD WASHER BUTTON
2 – CONTROL STALK
3 – HAZARD WARNING BUTTON
4 – WINDSHIELD WIPER CONTROL
5 – MULTI-FUNCTION SWITCH
The information contained in this group addresses
only the multi-function switch turn signal and haz-
ard warning functions. For information relative to
the other systems that are controlled by and circuits
that are integral to the multi-function switch, see the
group in this service manual that covers that system.
However, the turn signal and hazard warning
switches cannot be repaired. If these switches or any
other circuit or component of the multi-function
switch unit is faulty or damaged, the entire multi-
function switch unit must be replaced.
OPERATION
TURN SIGNAL SWITCH
The multi-function
extends from the left side of the steering column just
below the steering wheel is moved up or down to
activate the turn signal switch. When the control
stalk is moved in the upward direction, the right
turn signal switch circuitry is activated; and, when
the control stalk is moved in the downward direction,
the left turn signal switch circuitry is activated. The
turn signal switch has a detent position in each
direction that provides turn signals with automatic
cancellation, and an intermediate momentary posi-
tion in each direction that provides turn signals only
until the multi-function switch control stalk is
released.
When the turn signal switch is in a detent posi-
tion, it is turned off by one of two turn signal cancel-
ling cam lobes that are integral to the rotor of the
clockspring mechanism. Turning the steering wheel
causes the turn signal cancelling cam lobes to contact
a cancel actuator in the multi-function switch, and
the turn signal switch automatically returns to the
off position.
HAZARD WARNING SWITCH
The hazard warning switch is controlled by the
hazard warning switch push button. Push the switch
button in to unlatch the switch and activate the haz-
ard warning system, and push in on the button again
to latch the switch and turn the system off. When
the hazard warning switch is latched (hazard warn-
ing off), the push button will be in a lowered position
on the top of the steering column shroud; and, when
the hazard warning switch is unlatched (hazard
warning on), the push button will be in a raised posi-
tion.
TURN SIGNAL CANCELLING CAM
DESCRIPTION
The turn signal cancelling cam is concealed within
the steering column below the steering wheel. The
turn signal cancelling cam consists of two lobes that
are integral to the lower surface of the clockspring
switch control stalk
DN
that