1. ZJ POWER MIRRORS 8T - 1
POWER MIRRORS
CONTENTS
page page
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SERVICE PROCEDURES ................... 4
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 1
GENERAL INFORMATION
This group covers power outside mirrors and the
automatic day/night inside rear view mirror, which
are available options on Grand Cherokee models. Fol-
lowing are general descriptions of the major compo-
nents in the power outside mirror and automatic day/
night inside rear view mirror systems. Refer to
Group 8W - Wiring Diagrams for complete circuit de-
scriptions and diagrams.
POWER MIRROR
The power mirrors are connected to battery feed at
all times. Each mirror head contains two electric mo-
tors, two drive mechanisms and the mirror glass.
One motor and drive controls mirror up-and-down
movement, and the other controls right-and-left
movement.
The mirror glass is the only serviced replacement
part for the power mirror assembly. If any other com-
ponent of the mirror unit is faulty or damaged, the
entire assembly must be replaced.
HEATED MIRROR
The heated mirror option is controlled by the rear
window defogger switch. The heater elements in the
mirror are activated only when the rear window de-
fogger switch is in the ON position. Refer to Group
8N - Rear Window Defogger for diagnosis of this sys-
tem. Fig. 1 Power Mirror Switch
AUTOMATIC DAY/NIGHT MIRROR
POWER MIRROR SWITCH
The automatic day/night mirror automatically
Both the right and left mirror are controlled by a
changes its reflectance to reduce glare in all types of
multi-function switch located on the lower left end of
driving conditions. A thin layer of electrochromic ma-
the instrument panel, directly below the left spot
terial between two pieces of conductive glass make
cooler (Fig. 1). The selector switch is moved right
up the face of the mirror. As light conditions change,
(right mirror control), left (left mirror control), or
two photocell sensors adjust the reflectance while re-
center to turn power mirrors off. Then one of four di-
ducing glare from headlamps approaching from the
rectional control buttons is depressed to control
rear.
movement of the selected mirror up, down, right, or
The mirror incorporates 2 sensors. The ambient
left. The power mirror switch is serviced only as a
sensor (forward facing) detects normal outside light
complete unit.
levels. The headlamp sensor (rear facing) detects

2. 8T - 2 POWER MIRRORS ZJ
light levels received at the rear window side of the only operate when the ignition switch is in the ON
mirror. When the difference between the two levels position. The mirror also senses the back-up lamp
becomes too great (light level received at rear of mir- circuit and turns off whenever the transmission
ror is much higher than front of mirror), the mirror (manual or automatic) is in reverse.
begins to darken. The automatic day/night mirror can not be re-
The mirror switch controls whether the automatic paired. If faulty, the entire assembly must be re-
dimming feature is on or off. When on is selected, the placed.
switch is lighted by an integral LED. The mirror will
DIAGNOSIS
POWER MIRRORS
(1) Remove the door trim panel as described in
Power Mirror Remove/Install.
(2) Unplug power mirror door wiring harness con-
nector.
(3) Connect a jumper wire to a 12-volt source.
(4) Connect another jumper wire to a good body
ground.
(5) Refer to Power Mirror Motor Test for appropri-
ate pin numbers (Fig. 2).
Fig. 3 Power Mirror Switch Test
Fig. 2 Power Mirror Motor Test
(4) Turn ignition switch to OFF position. Check for
POWER MIRROR SWITCH continuity between connector cavity with black wire
(1) Remove power mirror switch from mounting po-
sition.
(2) Unplug wiring harness connector.
(3) Using an ohmmeter, test for continuity between
the terminals of the switch as shown in the Power
Mirror Switch Test (Fig. 3).
AUTOMATIC DAY/NIGHT MIRROR
(1) Check fuse 19 in fuseblock module. If OK, go to
next step. If not OK, replace fuse.
(2) Turn ignition switch to the ON position. Check
for battery voltage at fuse 19 in fuseblock module. If
OK, go to next step. If not OK, repair circuit from
fuse to ignition switch as required.
(3) Unplug harness connector from mirror (Fig. 4).
With ignition switch ON, check for battery voltage at
connector cavity with yellow wire. If OK, go to next
step. If not OK, repair circuit to fuse 19 as required. Fig. 4 Automatic Rear View Mirror

3. ZJ POWER MIRRORS 8T - 3
POWER MIRROR SCHEMATIC
and a good ground. There should be continuity. If bient light. Light sensor must be covered com-
OK, go to next step. If not OK, repair circuit to pletely so that no light reaches the sensor. Use
ground as required. only one finger pressed tightly against sensor,
(5) Turn ignition switch to ON position. Set park- or cover sensor completely with electrical tape.
ing brake. Place transmission gear selector in Re- (7) Shine a light into the rear facing sensor. The
verse position. Check for battery voltage at connector mirror should darken. If OK, go to next step. If not
cavity with brown/light green wire. If OK, plug mir- OK, replace mirror
ror connector back in and go to next step. If not OK, (8) With the mirror darkened, place the transmis-
repair circuit to back-up lamps as required. sion gear selector in Reverse. The mirror should re-
(6) Place transmission gear selector in Neutral. turn to its normal condition. If not OK, replace
Place mirror switch in ON (switch lighted) position. mirror.
Cover the forward facing sensor to keep out any am-

4. 8T - 4 POWER MIRRORS ZJ
SERVICE PROCEDURES
POWER MIRROR SWITCH REMOVE/INSTALL
(1) Disconnect battery negative cable.
(2) Remove ash receiver.
(3) Remove 6 screws holding instrument panel cen-
ter bezel (Fig. 5).
Fig. 6 Upper Dash Pad Attaching Screws
Fig. 7 Cluster to Dash Pad Screws
Fig. 5 Instrument Panel Center Bezel
(4) Remove center bezel.
(5) Remove 2 screws holding dash pad located be-
hind top of center bezel.
(6) Gently pry defroster grille out of dash pad.
(7) Unplug auto headlamp and/or solar sensors (if
equipped) and set defroster grille aside.
(8) Remove 4 screws in defroster duct opening
holding dash pad (Fig. 6).
(9) Remove 3 screws above instrument panel clus-
ter holding dash pad (Fig. 7).
(10) Open glove box and remove 2 screws holding
dash pad.
(11) Remove dash pad by pulling up to unsnap end Fig. 8 Steering Column Cover
clips. (14) Remove 1 screw from bottom of lower instru-
(12) Remove 4 screws holding the steering column ment panel trim and pull panel off. There is also a
cover (Fig. 8). clip holding the panel to the instrument panel.
(13) With left front door open, remove 1 screw from (15) Remove 1 screw holding top of mirror switch
the side of the lower instrument panel trim (Fig. 9). bezel (Fig. 10).

5. ZJ POWER MIRRORS 8T - 5
Fig. 11 Power Mirror Bezel Bottom Screw
Fig. 9 Lower Instrument Panel Trim
Fig. 10 Power Mirror Bezel Top Screw
(16) Remove 1 screw holding bottom of bezel (Fig. Fig. 12 Power Mirror Switch Remove
11). Remove the mirror switch bezel far enough to
(4) Remove screw from under door armrest.
unplug connector.
(5) Remove screw from bottom of hand hold in door
(17) Depress locking tabs and remove switch from
armrest.
bezel (Fig. 12).
(18) Reverse removal procedures to install. CAUTION: The wiring harness to the door switches
is just long enough to allow installation. If trim
POWER MIRROR REMOVE/INSTALL panel is pulled off by hand the switches may be
(1) Remove screw at top of door trim panel near pulled apart. Use a door clip tool to prevent damag-
mirror (Fig. 13). ing the switches.
(2) Remove screw from demister opening.
(3) Remove screw and door handle cover.

6. 8T - 6 POWER MIRRORS ZJ
Fig. 15 Power Mirror Remove/Install
Fig. 13 Door Trim Panel Remove
AUTOMATIC DAY/NIGHT MIRROR REMOVE/
(6) Remove the door trim panel with a wide, flat- INSTALL
bladed tool (Fig. 14). (1) Remove wire cover by grasping lower portion of
To aid in removal of the trim panel, start at wire cover and sliding into upper portion and off of
the bottom of the panel. mirror base (Fig. 16).
Fig. 14 Door Trim Panel Remove Fig. 16 Automatic Rear View Mirror Remove/Install
(7) Unplug mirror wiring from door harness at con- (2) Unplug connector behind mirror.
nector (Fig. 15). (3) Remove screw holding mirror to windshield.
(8) Remove 3 nuts holding mirror to door panel (4) Push mirror up far enough to clear the support
and remove mirror. and remove mirror.
(9) Reverse removal procedures to install. (5) Reverse removal procedures to install.