2003 JEEP GRAND CHEROKEE Workshop Manual

fuel pump sensor roof rack jump start terminals air conditioning wiper size

Page 473 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (3) If the multi-function switch fails any of the
continuity or resistance tests, replace the switch.
REMOVAL
REMOVAL - LEFT MULTI-FUNCTION SWITCH
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE

(3) If the multi-function switch fails any of the
continuity or resistance tests, replace the switch.
REMOVAL
REMOVAL - LEFT MULTI-FUNCTION SWITCH
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the lower tilting steering column
shroud (Fig. 24).
(3) Unsnap the two halves of the steering column
shroud, and remove.
(4) Disconnect the instrument panel wire harness
connector from the switch connector.
(5) Remove the screws that secure the left multi-
function switch to the housing (Fig. 25).
(6) Remove the left multi-function switch.
REMOVAL - MULTI-FUNCTION SWITCH
MOUNTING HOUSING
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: Before starting this procedure, be certain to
turn the steering wheel until the front wheels are in
the straight-ahead position.(1) Disconnect and isolate the battery negative
cable.
Fig. 24 Steering Column Shrouds Remove/Install
1 - UPPER TILTING COLUMN SHROUD
2 - FIXED COLUMN SHROUD
3 - LOWER TILTING COLUMN SHROUD
4 - SCREW
Fig. 25 Left Multi-Function Switch Remove/Install
1 - SCREW (2)
2 - STEERING COLUMN
3 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
4 - LEFT MULTI-FUNCTION SWITCH
8L - 22 LAMPS/LIGHTING - EXTERIORWJ
LEFT MULTI-FUNCTION SWITCH (Continued)

Page 474 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (2) Remove the clockspring from the multi-function
switch mounting housing. (Refer to 8 - ELECTRI-
CAL/RESTRAINTS/CLOCKSPRING - REMOVAL).
(3) Remove the left multi-function switch from the
multi-funct

(2) Remove the clockspring from the multi-function
switch mounting housing. (Refer to 8 - ELECTRI-
CAL/RESTRAINTS/CLOCKSPRING - REMOVAL).
(3) Remove the left multi-function switch from the
multi-function switch mounting housing. (Refer to 8 -
ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/
LEFT MULTI-FUNCTION SWITCH - REMOVAL -
LEFT MULTI-FUNCTION SWITCH).
(4) Remove the right multi-function switch from
the multi-function switch mounting housing. (Refer
to 8 - ELECTRICAL/WIPERS/WASHERS/RIGHT
MULTI-FUNCTION SWITCH - REMOVAL).
(5) Remove the screw that secures the multi-func-
tion switch mounting housing to the steering column
housing (Fig. 26).
(6) Remove the multi-function switch mounting
housing (Fig. 27).
INSTALLATION
INSTALLATION - LEFT MULTI-FUNCTION
SWITCH
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAGSYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Position the left multi-function switch onto the
housing (Fig. 28).
(2) Install and tighten the screws that secure the
left multi-function switch housing. Tighten the
screws to 2.5 N´m (22 in. lbs.).
(3) Reconnect the instrument panel wire harness
connector to the switch connector.
Fig. 26 Multi-Function Switch Mounting Housing
Screw Remove/Install
1 - CLOCK SPRING
2 - SCREW
3 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
Fig. 27 Multi-Function Switch Mounting Housing
Remove/install
1 - MULTI-FUNCTION SWITCH ASSEMBLY
2 - CLOCKSPRING
Fig. 28 Left Multi-Function Switch Remove/Install
1 - SCREW (2)
2 - STEERING COLUMN
3 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
4 - LEFT MULTI-FUNCTION SWITCH
WJLAMPS/LIGHTING - EXTERIOR 8L - 23
LEFT MULTI-FUNCTION SWITCH (Continued)

Page 475 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (4) Position the lower tilting steering column
shroud to the underside of the steering column (Fig.
29).
(5) Install and tighten the screw that secures the
lower steering column shroud housing. Tighte

(4) Position the lower tilting steering column
shroud to the underside of the steering column (Fig.
29).
(5) Install and tighten the screw that secures the
lower steering column shroud housing. Tighten the
screw to 1.9 N´m (17 in. lbs.).
(6) Align the upper tilting steering column shroud
to the lower shroud and snap the two shroud halves
together.
(7) Reconnect the battery negative cable.
INSTALLATION - MULTI-FUNCTION SWITCH
MOUNTING HOUSING
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: Before starting this procedure, be certain
that the front wheels are still in the straight-ahead
position.
(1) Rotate the turn signal cancel cam in the multi-
function switch housing until the alignment hole in
the one cam lobe is aligned with the alignment hole
in the back of the housing. The oblong hole in the
hub of the cam should now be at the top, and the
locating tab in the hub of the cam should be at the
bottom (Fig. 30).
(2) Position the multi-function switch housing onto
the top of the steering column. The locating tab in
the hub of the turn signal cancel cam must be
engaged with the alignment groove in the bottom of
the upper steering column shaft.
(3) Install and tighten the screw that secures the
multi-function switch housing to the top of the col-
umn housing (Fig. 31). Tighten the screw to 1.9 N´m
(17 in. lbs.).
(4) Reinstall the right multi-function switch onto
the multi-function switch housing. (Refer to 8 -
ELECTRICAL/WIPERS/WASHERS/RIGHT MULTI-
FUNCTION SWITCH - INSTALLATION).
(5) Reinstall the left multi-function switch onto the
multi-function switch housing. (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/LEFT
Fig. 29 Steering Column Shrouds Remove/Install
1 - UPPER TILTING COLUMN SHROUD
2 - FIXED COLUMN SHROUD
3 - LOWER TILTING COLUMN SHROUD
4 - SCREW
Fig. 30 Turn Signal Cancel Cam Alignment
1 - ALIGNMENT HOLE
2 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
3 - ALIGNMENT HOLE
4 - TURN SIGNAL CANCEL CAM
5 - LOCATING TAB
6 - WASHER
7 - TURN SIGNAL SWITCH CANCEL ACTUATOR
8L - 24 LAMPS/LIGHTING - EXTERIORWJ
LEFT MULTI-FUNCTION SWITCH (Continued)

Page 476 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual MULTI-FUNCTION SWITCH - INSTALLATION -
LEFT MULTI-FUNCTION SWITCH).
(6) Reinstall the clockspring onto the multi-func-
tion switch housing. (Refer to 8 - ELECTRICAL/RE-
STRAINTS/CLOCKSPRING - INSTALLA

Page 477 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INSTALLATION
INSTALLATION - BULBS
(1) Position the bulb in socket and push into place.
(2) Position the bulb socket in the lamp and rotate
clockwise.
(3) Install the lamp.
INSTALLATION - LAMP
The brak

INSTALLATION
INSTALLATION - BULBS
(1) Position the bulb in socket and push into place.
(2) Position the bulb socket in the lamp and rotate
clockwise.
(3) Install the lamp.
INSTALLATION - LAMP
The brake, turn signal, back-up, and side marker
lamps are incorporated in the tail lamp.
(1) Position the lamp.
(2) Connect the lamp wire harness connector.
(3) Align the pin with the retainer and press the
lamp inward to engage.
(4) Install the screws attaching the lamp to body.
TURN SIGNAL CANCEL CAM
DESCRIPTION
The turn signal cancel cam is concealed within the
multi-function switch housing below the steering
wheel and the clockspring mechanism. The turn sig-
nal cancel cam consists of a disc unit with two inte-
gral lobes. The upper lobe of the cam has an
alignment hole that is used to align it with another
hole in the back of the multi-function switch mount-
ing housing. The upper surface of the turn signal
cancel cam features three holes, two round and one
oblong. These holes engage and key the cancel cam to
three matching pins in the hub of the clockspring
mechanism. The hub of the clockspring and the turn
signal cancel cam rotate with the steering wheel. The
centered clockspring housing is then secured to the
multi-function switch mounting housing over the top
of the turn signal cancel cam.
The turn signal cancel cam is serviced as a assem-
bly with the multi-function switch housing. The turn
signal cancel cam cannot be repaired and, if faulty or
damaged, the multi-function switch mounting hous-
ing unit must be replaced. (Refer to 8 - ELECTRI-
CAL/LAMPS/LIGHTING - EXTERIOR/LEFT MULTI-
FUNCTION SWITCH - REMOVAL - MULTI-
FUNCTION SWITCH MOUNTING HOUSING).
OPERATION
The turn signal cancel cam has two lobes. When
the turn signals are activated by moving the left
multi-function switch control stalk to a detent posi-
tion, a turn signal cancel actuator is extended from
the inside surface of the multi-function switch hous-
ing toward the center of the steering column and the
turn signal cancel cam. When the steering wheel is
rotated during a turning maneuver, one of the two
turn signal cancel cam lobes will contact the turn sig-
nal cancel actuator. The cancel actuator latches
against the cancel cam rotation in the direction oppo-
site that which is signaled.
Fig. 33 Tail Lamp
1 - CONNECTOR
2 - RETAINER
3 - TAILLAMP (STOP, TURN, BACK-UP, SIDE MARKER)
4 - PIN
8L - 26 LAMPS/LIGHTING - EXTERIORWJ
TAIL LAMP (Continued)

Page 478 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual UNDERHOOD LAMP
REMOVAL
REMOVAL - BULB
(1) Insert a small flat blade in access slot between
the lamp base and lamp lens.
(2) Lift the lamp lens upward and remove the
lamp lens (Fig. 34).
(3) Depress bu

Page 479 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual LAMPS/LIGHTING - INTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
...................................28
COURTESY LAMP
REMOVAL
REMOVAL - BULB.....................29
REMOVAL

LAMPS/LIGHTING - INTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
...................................28
COURTESY LAMP
REMOVAL
REMOVAL - BULB.....................29
REMOVAL - LAMP.....................29
INSTALLATION
INSTALLATION - BULB.................29
INSTALLATION - LAMP.................29
DOME LAMP
REMOVAL
REMOVAL - BULB.....................29
REMOVAL - LAMP.....................29
INSTALLATION
INSTALLATION - BULB.................29
INSTALLATION - LAMP.................29
DOOR AJAR SWITCH
DESCRIPTION
DESCRIPTION - DOOR AJAR SWITCH.....29
DESCRIPTION - FLIP UP GLASS AJAR
SWITCH............................29DESCRIPTION - LIFTGATE AJAR SWITCH . . 30
OPERATION
OPERATION - DOOR AJAR SWITCH.......30
OPERATION - FLIP UP GLASS AJAR
SWITCH............................30
OPERATION - LIFTGATE AJAR SWITCH....30
DIAGNOSIS AND TESTING - DOOR AJAR
SWITCH............................30
GLOVE BOX LAMP/SWITCH
REMOVAL.............................31
INSTALLATION.........................31
READING LAMP
DESCRIPTION.........................32
OPERATION...........................32
REMOVAL.............................32
INSTALLATION.........................32
TRANS RANGE INDICATOR ILLUMINATION
DESCRIPTION.........................32
VANITY LAMP
REMOVAL.............................32
INSTALLATION.........................32
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
CAUTION: Do not use bulbs other than the bulbs
listed in the Bulb Application Table. Damage to
lamp can result.
Service procedures for most of the lamps in the
instrument panel, are located in Electrical, Instru-
ment Panel. Some components have lamps that can
only be serviced by an Authorized Service Center
(ASC) after the component is removed from the vehi-
cle.
LAMP BULB TYPE
A/C HEATER NOT SERVICED
ASH RECEIVER 161
CLIMATE CONTROL 74
PASSENGER ASSIST
HANDLE214±2
FRONT READING 192
GLOVE COMPARTMENT 194
TELLTALE/HAZARD LAMP 74
HEATER NOT SERVICED
OVERHEAD CONSOLE 192
RADIO ASC
REAR CARGO 214±2
UNDER PANEL COURTESY 906
CLUSTER ILLUMINATION 103
SUNVISOR VANITY CHRYSLER P/N
6501966
8L - 28 LAMPS/LIGHTING - INTERIORWJ

Page 480 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual COURTESY LAMP
REMOVAL
REMOVAL - BULB
(1) Remove the door trim panel. (Refer to 23 -
BODY/DOOR - FRONT/TRIM PANEL - REMOVAL)
for the service procedures.
(2) Remove the bulb socket from the lamp.
(3) Re

COURTESY LAMP
REMOVAL
REMOVAL - BULB
(1) Remove the door trim panel. (Refer to 23 -
BODY/DOOR - FRONT/TRIM PANEL - REMOVAL)
for the service procedures.
(2) Remove the bulb socket from the lamp.
(3) Remove the bulb from the socket.
REMOVAL - LAMP
(1) Remove door trim panel. (Refer to 23 - BODY/
DOOR - FRONT/TRIM PANEL - REMOVAL) for the
procedures.
(2) Disengage the electrical connectors.
(3) Depress the locking tabs and remove the lamp
module.
(4) Remove the bulb socket.
INSTALLATION
INSTALLATION - BULB
(1) Install the bulb in the socket.
(2) Install the bulb socket in the lamp.
(3) Install the door trim panel.
INSTALLATION - LAMP
(1) Install the bulb socket into the lamp module.
(2) Align the lamp module with the door trim
panel.
(3) Snap the lamp module into place.
(4) Install the door panel.
DOME LAMP
REMOVAL
REMOVAL - BULB
(1) Rotate the the grab handle down.
(2) Remove the screws retaining the grab handle/
dome lens.
(3) Remove the grab handle/lens from the module.
(4) Remove the bulb from the lamp terminals.
REMOVAL - LAMP
It will be necessary to partially remove the head-
liner to remove the bulb socket.
(1) Remove the screws holding the grab handle/
lens assembly to the headliner and roof panel.(2) Lower the headliner as needed. (Refer to 23 -
BODY/INTERIOR/HEADLINER - REMOVAL) for the
service procedure.
(3) Separate the lamp socket from the headliner
and roof panel.
(4) Disconnect the wire connector.
INSTALLATION
INSTALLATION - BULB
(1) Insert the bulb into the lamp terminals.
(2) Position the grab handle/lens on the lamp mod-
ule.
(3) Install the screws retaining the grab handle/
lens to the lamp module.
INSTALLATION - LAMP
(1) Position the lamp socket on the headliner and
roof panel.
(2) Connect the wire harness.
(3) Install the headliner.
(4) Position the grab handle/lens on the lamp mod-
ule.
(5) Install the screws retaining the grab handle/
lens into the lamp socket.
DOOR AJAR SWITCH
DESCRIPTION
DESCRIPTION - DOOR AJAR SWITCH
The door ajar switches are integral to the door
latch mechnicism. The front door ajar switches are
actuated by the front door latch mechanisms, and are
hard wired between a body ground and the Driver
Door Module (DDM) or the Passenger Door Module
(PDM). The rear door ajar switches are actuated by
the rear door latch mechanisms, and are hard wired
between a body ground and the Body Control Module
(BCM) through the rear door and body wire har-
nesses.
The door ajar switches cannot be adjusted or
repaired and, if faulty or damaged, the door latch
unit must be replaced. (Refer to 23 - BODY/DOOR -
FRONT/LATCH - REMOVAL) or (Refer to 23 -
BODY/DOORS - REAR/LATCH - REMOVAL) for the
service procedures. For complete circuit diagrams,
refer to the appropriate wiring information.
DESCRIPTION - FLIP UP GLASS AJAR SWITCH
The liftgate flip-up glass ajar switch is integral to
the liftgate flip-up glass latch mechnicism. The lift-
gate flip-up glass ajar switch is actuated by the lift-
gate flip-up glass latch mechanism, and is hard
WJLAMPS/LIGHTING - INTERIOR 8L - 29

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