Dodge 2000 DURANGO Service Manual page 487

DN
GENERAL INFORMATION
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 5
AUTOMATIC DAY/NIGHT MIRROR SYSTEM . . . . . 5
DESCRIPTION AND OPERATION
AUTOMATIC DAY/NIGHT MIRROR . . . . . . . . . . . . . 5
GENERAL INFORMATION
INTRODUCTION
An automatic dimming inside day/night rear view
mirror is an available factory-installed option on this
model. Refer to 8W-44 - Interior Lighting in Group
8W - Wiring Diagrams for complete circuit descrip-
tions and diagrams.
AUTOMATIC DAY/NIGHT MIRROR SYSTEM
The automatic day/night mirror system is able to
automatically change the reflectance of the inside
rear view mirror in order to reduce the glare of head-
lamps approaching the vehicle from the rear. The
automatic day/night rear view mirror receives bat-
tery current through a fuse in the junction block only
when the ignition switch is in the On position.
A switch located on the bottom of the automatic
day/night mirror housing allows the vehicle operator
to select whether the automatic dimming feature is
operational. When the automatic day/night mirror is
turned on, the mirror switch is lighted by an integral
Light-Emitting Diode (LED). The mirror will auto-
matically disable its self-dimming feature whenever
the vehicle is being driven in reverse.
Following is a general description of the automatic
day/night mirror. Refer to the owner's manual in the
vehicle glove box for more information on the fea-
tures, use and operation of the automatic day/night
mirror system.
DESCRIPTION AND OPERATION
AUTOMATIC DAY/NIGHT MIRROR
The automatic day/night mirror uses a thin layer
of electrochromic material between two pieces of con-
ductive glass to make up the face of the mirror.
When the mirror switch is in the On position, two
photocell sensors are used by the mirror circuitry to
monitor external light levels and adjust the reflec-
tance of the mirror.
INTERIOR MIRRORS
TABLE OF CONTENTS
page
DIAGNOSIS AND TESTING
REMOVAL AND INSTALLATION
ward-facing (windshield side) of the rear view mirror
housing, and detects the ambient light levels outside
of the vehicle. The headlamp photocell sensor is
located inside the rear view mirror housing behind
the mirror glass and faces rearward, to detect the
level of the light being received at the rear window
side of the mirror. When the circuitry of the auto-
matic day/night mirror detects that the difference
between the two light levels is too great (the light
level received at the rear of the mirror is much
higher than that at the front of the mirror), it begins
to darken the mirror.
itors the transmission using an input from the
backup lamp circuit. The mirror circuitry is pro-
grammed to automatically disable its self-dimming
feature whenever it senses that the transmission
backup lamp circuit is energized.
self-contained unit and cannot be repaired. If faulty
or damaged, the entire mirror assembly must be
replaced.
DIAGNOSIS AND TESTING
AUTOMATIC DAY/NIGHT MIRROR
8W-44 - Interior Lighting in Group 8W - Wiring Dia-
grams.
to Step 2. If not OK, repair the shorted circuit or
component as required and replace the faulty fuse.
Check for battery voltage at the fuse in the junction
block. If OK, go to Step 3. If not OK, repair the open
circuit to the ignition switch as required.
Disconnect and isolate the battery negative cable.
Unplug the wire harness connector from the auto-
matic day/night mirror (Fig. 1). Connect the battery
negative cable. Turn the ignition switch to the On
POWER MIRROR SYSTEMS
AUTOMATIC DAY/NIGHT MIRROR . . . . . . . . . . . . . 5
AUTOMATIC DAY/NIGHT MIRROR . . . . . . . . . . . . . 6
The ambient photocell sensor is located on the for-
The automatic day/night mirror circuitry also mon-
The automatic day/night mirror is a completely
For circuit descriptions and diagrams, refer to
(1) Check the fuse in the junction block. If OK, go
(2) Turn the ignition switch to the On position.
(3) Turn the ignition switch to the Off position.
8T - 5
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