Dodge Dakota 2001, Service Manual

Page: 470 / 2307

the steering column shrouds. The multi-function
switch control stalk has both nomenclature and
International Control and Display Symbol graphics
applied to it, which identify its many functions. An
International Control and Display Symbol icon for
“Hazard Warning” is applied to the top of the hazard
warning switch push button.
The switch housing and its controls are constructed
of molded black plastic. A single connector receptacle
connects the switch to the vehicle electrical system
through a take out and connector of the instrument
panel wire harness.
The multi-function switch supports the following
functions and features:
•
Continuous Wipe Modes - The control knob of
the multi-function switch provides two continuous
wipe switch positions, low speed or high speed.
•
Hazard Warning Control - The internal cir-
cuitry and hardware of the multi-function switch pro-
vide detent switching for activation and deactivation
of the hazard warning system.
•
Headlamp Beam Selection - The internal cir-
cuitry and hardware of the multi-function switch pro-
vide detent switching for selection of the headlamp
high or low beams.
•
Headlamp Optical Horn - The internal cir-
cuitry and hardware of the multi-function switch
includes momentary switching of the headlamp high
beam circuits to provide an optical horn feature
(sometimes referred to as flash-to-pass), which allows
the vehicle operator to momentarily flash the head-
lamp high beams as an optical signalling device.
•
Intermittent Wipe Mode - The control knob of
the multi-function switch provides an intermittent
wipe mode with multiple delay interval positions.
•
Turn Signal Control - The internal circuitry
and hardware of the multi-function switch provide
both momentary non-detent switching and detent
switching with automatic cancellation for both the
left and right turn signals.
•
Washer Mode - The control knob of the multi-
function switch provides washer system operation
when the knob is depressed towards the steering col-
umn.
The multi-function switch cannot be adjusted or
repaired. If any function of the switch is faulty, or if
the switch is damaged, the entire switch unit must
be replaced.
OPERATION
The multi-function switch uses conventionally
switched outputs and a variable resistor to control
the many functions and features it provides using
hard wired circuitry. The switch is grounded at all
times through a single wire take out with an eyelet
terminal connector of the instrument panel wire har-
ness that is secured by a nut to a ground stud
located on the left cowl side inner panel, near the left
instrument panel end bracket. When the ignition
switch is in the Accessory or On positions, battery
current from a fuse in the Junction Block (JB) is pro-
vided through a fused ignition switch output (run-
acc) circuit. Following are descriptions of how the
multi-function switch operates to control the many
functions and features it provides:
•
Continuous Wipe Modes - When the control
knob of the multi-function switch is rotated to the
High or Low positions, the circuitry within the
switch provides a battery current output directly to
the high or low speed brush of the wiper motor.
When the control knob is in the Off position, the cir-
cuitry within the switch connects the output of the
wiper motor park switch to the low speed brush of
the wiper motor.
•
Hazard Warning Control - The hazard warn-
ing push button is pushed down to unlatch the
switch and activate the hazard warning system, and
pushed down again to latch the switch and turn the
system off. When the hazard warning switch is
latched (hazard warning off), the push button will be
in a lowered position on the top of the steering col-
umn shroud; and, when the hazard warning switch is
unlatched (hazard warning on), the push button will
be in a raised position. The multi-function switch
hazard warning circuitry provides a signal to the
hazard warning sense of the combination flasher to
activate or deactivate the flasher output to the haz-
ard warning lamps.
•
Headlamp Beam Selection - The multi-func-
tion switch control stalk is pulled towards the steer-
ing wheel past a detent, then released to actuate the
headlamp beam selection switch. Each time the con-
trol stalk is actuated in this manner, the opposite
headlamp mode from what is currently selected will
be activated. The internal circuitry of the headlamp
beam selection switch directs a ground signal output
from the headlamp switch to the appropriate low
beam or high beam sense of the Central Timer Mod-
ule (CTM). The CTM then controls a hard wired out-
put to activate the selected headlamp beams.
•
Headlamp Optical Horn - The left multi-func-
tion switch control stalk is pulled towards the steer-
ing wheel to just before a detent, to momentarily
activate the headlamp high beams. The high beams
will remain illuminated until the control stalk is
released. The internal circuitry of the headlamp
beam selection switch provides a momentary ground
path to the CTM high beam sense.
•
Intermittent Wipe Mode - When the multi-
function switch control knob is rotated to the Delay
position, the circuitry within the switch provides a
battery current signal to the Central Timer Module
AN
LAMPS/LIGHTING - EXTERIOR 8L - 19
MULTI-FUNCTION SWITCH (Continued)