Jeep Grand Cherokee WK. Manual — part 444
TURN SIGNAL LAMPS
CONDITION
POSSIBLE CAUSES
CORRECTION
ONE TURN SIGNAL LAMP
DOES NOT ILLUMINATE
1. Faulty or missing bulb.
1. Test and replace turn signal bulb as
required.
2. Faulty ground circuit.
2. Test and repair open ground circuit as
required.
3. Faulty supply circuit.
3. Test and repair open right or left turn
signal circuit as required.
ALL RIGHT SIDE AND/OR ALL
LEFT SIDE TURN SIGNAL
LAMPS DO NOT FLASH
1. Faulty switch.
1. Test and replace left multi-function switch
as required.
2. Faulty signal circuit.
2. Test and repair open right or left turn
signal circuit as required.
ALL RIGHT SIDE OR ALL LEFT
SIDE TURN SIGNALS FLASH
TOO RAPIDLY (MORE THAN
100 FLASHES PER MINUTE)
1. Faulty or missing bulb.
1. Test and replace faulty bulb as required.
2. Faulty ground circuit.
2. Test and repair open ground circuit as
required.
3. Faulty signal circuit.
3. Test and repair open right or left turn
signal circuit as required.
SPECIFICATIONS
EXTERIOR LAMPS
CAUTION: Do not use bulbs other than the bulbs listed in the Bulb Application Table. Damage to lamp can
result. Do not touch halogen bulbs with fingers or other oily surfaces. Bulb life will be reduced.
LAMP
BULB TYPE
BACK-UP
3157A
FOG LAMP
9145
FRONT PARK LAMP
194NA
FRONT SIDE MARKER
194NA
FRONT TURN SIGNAL
3157A
HIGH BEAM
9005
LICENSE PLATE
168
LOW BEAM
9006
TAIL/STOP
3157A
REAR TURN SIGNAL
3157A
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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
WK
SPECIAL TOOLS
LAMPS/LIGHTING - EXTERIOR
SmartBeam Aim Board C-3649
WK
LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
8L - 87
AUTO HEADLAMP SENSOR
DIAGNOSIS AND TESTING
AUTO HEADLAMP SENSOR
The auto headlamp sensor needs real sunlight to properly register the light level. When auto headlamps are
enabled indoors, the headlamps may be turned on. The sensor is located in the instrument panel near the base of
the windshield, between the left and right defroster grill. There are no faults set in the EMIC or FCM for a inoper-
ative or missing auto headlamp sensor. Symptoms of a missing sensor or unconnected sensor would be that the
headlamps and park lamps turn on when the vehicle is started and there is a high level of ambient light present (I.E.
daytime). Auto headlamps should not function in the presence of daylight.
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Using a trim stick (special tool #C-4755) or equiv-
alent, gently pry up on the auto headlamp sensor
and lift it out of the instrument panel top pad.
3. Disconnect the harness connector from the auto
headlamp sensor.
4. Separate the auto headlamp sensor from instru-
ment panel.
INSTALLATION
1. Connect the harness connector to auto headlamp
sensor.
2. Position the auto headlamp sensor on instrument
panel and firmly snap onto place.
3. Connect the battery negative cable.
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LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
WK
CENTER HIGH MOUNTED STOP LAMP
REMOVAL
1. Disconnect and isolate the battery negative cable.
2. Remove the screws (2) attaching CHMSL to the lift-
gate (3)
.
3. Disconnect the wire harness connector (2).
4. Separate the CHMSL (1) from the vehicle.
WK
LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
8L - 89
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