Jeep Liberty KJ. Manual - part 165

POWER MIRRORS

DESCRIPTION

The power operated sideview mirrors allow the driver
to adjust both outside mirrors electrically from the driv-
ers seat by operating a switch (3) on the driver side
front door trim panel (1).

OPERATION

The power mirrors receive ignition current through a fuse in the junction block, and will only operate when the igni-
tion switch is in the Run position.

DIAGNOSIS AND TESTING - POWER MIRRORS

WIRING VOLTAGE TEST

The following wiring test determines whether or not voltage is continuous through the body harness to switch.

1. Remove the power mirror switch (Refer to 8 - ELECTRICAL/POWER MIRRORS/POWER MIRROR SWITCH -

REMOVAL).

2. Disconnect wire connector from back of power mirror switch.

3. Switch ignition to the RUN position.

4. Connect the clip end of a 12 volt test light to Pin 5 in the harness connector at the mirror switch. Touch the test

light probe to Pin 3.

If the test light illuminates, the wiring circuit between the battery and switch is OK.

If the lamp does not illuminate, first check fuse 25 in the Junction Block (JB). If fuse 25 is OK, then check for a
broken wire.

Refer to the appropriate wiring information.

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POWER MIRRORS

POWER MIRROR MOTOR TEST

If the power mirror switch is receiving proper current
and ground and mirrors do not operate, proceed with
power mirror motor test. Refer to the appropriate wir-
ing information.

1. Remove front door trim panel to gain access to

power mirror wire connector (Refer to 23 - BODY/
DOOR - FRONT/TRIM PANEL - REMOVAL).

2. Disconnect wire harness connector to power mirror

switch.

3. Using two jumper wires:

•

Connect one to a 12 volt source

•

Connect the other to a good body ground

•

Refer to the Mirror Motor Test Chart for proper
wire connections at the switch connector

MIRROR MOTOR TEST CHART

12 VOLTS

GROUND

MIRROR REACTION

SWITCH CONNECTOR

RIGHT

LEFT

PIN 2

PIN 6

PIN 1

LEFT

PIN 6

PIN 2

DOWN

PIN 1

PIN 6

RIGHT

PIN 9

PIN 6

PIN 10

LEFT

PIN 6

PIN 9

DOWN

PIN 10

PIN 6

RIGHT

4. If results shown in table are not obtained, check for open or shorted circuit. Replace mirror assembly as nec-

essary.

POWER MIRRORS

8N - 83

AUTOMATIC DAY / NIGHT MIRROR

DESCRIPTION - REAR VIEW MIRROR

The automatic dimming inside day/night rear view mirror system is a completely self-contained unit that replaces the
standard equipment inside rear view mirror. This system will automatically change the reflectance of the inside rear
view mirror to protect the driver from the unwanted headlight glare of trailing vehicles while driving at night. The
automatic day/night inside mirror receives ignition switched battery current through a fuse in the junction block, and
will only operate when the ignition switch is in the On position.

The automatic day/night mirror sensitivity cannot be repaired or adjusted. If any component of this unit is inoperative
or damaged, the entire automatic day/night inside rear view mirror unit must be replaced.

OPERATION - REAR VIEW MIRROR

The automatic day/night mirror switch allows the driver a manual control of whether the automatic dimming feature
is operational. This switch is a momentary rocker-type switch located on the lower rear-facing surface of the mirror
housing. When Auto is selected, a Light-Emitting Diode (LED) on the mirror housing just to the right of the switch
illuminates to indicate that automatic day/night mirror is turned on. When Off is selected, the LED is turned off. The
mirror also senses the backup lamp circuit, and will automatically disable its self-dimming feature whenever the
transmission gear selector is in the Reverse position.

A thin layer of electrochromatic material between two pieces of conductive glass make up the face of the mirror.
Two photocell sensors are used to monitor light levels and adjust the reflectance of the mirror. The ambient pho-
tocell sensor faces forward, to detect the outside light levels. The headlamp sensor is located on the mirror housing
just to the left of the switch and facing rearward, to detect the light level received at the rear window side of the
mirror. When the difference between the two light levels becomes too great (the light level received at the rear of
the mirror is much higher than that at the front of the mirror), the mirror begins to darken.

DIAGNOSIS AND TESTING - AUTOMATIC DAY / NIGHT MIRROR

For complete circuit diagrams, refer to the appropriate wiring information.

1. Check the fused ignition switch output (run/start) fuse in the junction block. If OK, go to Step 2. If not OK, repair

the shorted circuit or component as required and replace the faulty fuse.

2. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition switch output (run/start)

fuse in the junction block. If OK, go to Step 3. If not OK, repair the open fused ignition switch output (run/start)
circuit to the ignition switch as required.

3. Disconnect the overhead wire harness connector from the automatic day/night mirror connector receptacle.

Check for battery voltage at the fused ignition switch output (run/start) circuit cavity of the overhead wire harness
connector for the automatic day/night mirror. If OK, go to Step 4. If not OK, repair the open fused ignition switch
output (run/start) circuit to the fuse in the junction block as required.

4. Turn the ignition switch to the Off position. Check for continuity between the ground circuit cavity of the overhead

wire harness connector for the automatic day/night mirror and a good ground. There should be continuity. If OK,
go to Step 5. If not OK, repair the open ground circuit to ground as required.

5. Turn the ignition switch to the On position. Set the parking brake. Place the transmission gear selector lever in

the Reverse position. Check for battery voltage at the backup lamp switch output circuit cavity of the overhead
wire harness connector for the automatic day/night mirror. If OK, reconnect the overhead wire harness connector

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POWER MIRRORS

to the automatic day/night mirror connector receptacle and go to Step 6. If not OK, repair the open backup lamp
switch output circuit as required.

6. Place the transmission gear selector lever in the

Neutral position. Place the automatic day/night mir-
ror switch (2) in the Auto (LED (1) next to the
switch is lighted) position. Cover the forward facing
ambient photocell sensor to keep out any ambient
light.

NOTE: The ambient photocell sensor must be cov-
ered completely, so that no light reaches the sen-
sor. Use a finger pressed tightly against the
sensor, or cover the sensor completely with elec-
trical tape.

7. Shine a light into the rearward facing headlamp

photocell sensor (3). The automatic day/night mirror should darken. If OK, go to Step 8. If not OK, replace the
faulty automatic day/night mirror unit.

8. With the mirror darkened, place the transmission gear selector lever in the Reverse position. The automatic day/

night mirror should return to its normal reflectance. If not OK, replace the faulty automatic day/night mirror unit.

POWER MIRRORS

8N - 85

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