2002 JEEP GRAND CHEROKEE Ecu

ADJUSTMENTS
DOOR LATCH
DOOR LATCH ADJUSTMENT
(1) Locate access hole (Fig. 11).
(2) Insert a 5/32-inch hex-wrench through hole and
into adjustment screw. Loosen screw.
(3) Operate outside handle button several times to
release any restriction because of mis-alignment.
(4) Tighten adjustment screw to 3 N´m (30 in-lbs)
torque.
(5) Test handle button and lock cylinder for proper
operation.
LATCH STRIKER
REMOVAL
(1) Remove screws attaching striker to B-pillar.
(2) Separate striker and spacer from B-pillar (Fig.
12).
INSTALLATION
(1) Position striker and spacer on B-pillar.
(2) Install screws attaching striker to B-pillar.
Tighten screws to 28 N´m (20 ft. lbs.) torque (Fig.
12).
LOCK CYLINDER
REMOVAL
(1) Remove outside door handle, refer to (Refer to
23 - BODY/DOOR - FRONT/EXTERIOR HANDLE -
REMOVAL).
(2) Remove screw securing lock cylinder retainer
to outside door handle (Fig. 13).
(3) Separate lock cylinder from door handle.
(4) Disconnect lock cylinder switch, if equipped.
Fig. 11 Door Latch Adjustment
1 - ACCESS HOLE
2 - DOOR
3 - LATCH MOUNTING BOLTS
4-LATCH
Fig. 12 Front Door Latch Striker
1 - B-PILLAR
2 - SPACER
3 - STRIKER
Fig. 13 Front Door Lock Cylinder
1 - OUTSIDE DOOR HANDLE
2 - LOCK CYLINDER
3 - ANTI-THEFT SWITCH
4 - RETAINER
23 - 16 DOOR - FRONTWJ
LATCH (Continued)

COWL GRILLE
REMOVAL
(1) Remove wiper arms, refer to (Refer to 8 -
ELECTRICAL/WIPERS/WASHERS/WIPER ARMS -
REMOVAL).
(2) Remove plenum seal.
(3) Remove plastic push nuts attaching cowl cover
to cowl (Fig. 4).
(4) Remove windshield washer tubes at connector.
(5) Remove cowl cover from cowl.
INSTALLATION
(1) Position cowl cover on cowl.
(2) Install windshield washer tubes at connector.
(3) Install plastic push nuts attaching cowl cover
to cowl (Fig. 4).
(4) Install plenum seal.
(5) Install windshield wiper arms, refer to (Refer
to 8 - ELECTRICAL/WIPERS/WASHERS/WIPER
ARMS - INSTALLATION).
D-PILLAR APPLIQUE
REMOVAL
(1) Using a trim stick, carefully pry applique from
panel (Fig. 5).
INSTALLATION
(1) Position applique on panel with retainers
aligned.
(2) Press applique firmly in place.
D-PILLAR AIR EXHAUSTER
REMOVAL
(1) Remove D-pillar applique, refer to (Refer to 23
- BODY/EXTERIOR/COWL GRILLE SCREEN -
REMOVAL).
(2) Carefully pry air exhauster from D-pillar using
a flat blade screwdriver (Fig. 5).
INSTALLATION
(1) Reseal air exhauster using foam tape.
(2) Install air exhauster on D-pillar.
(3) Install D-pillar applique, refer to (Refer to 23 -
BODY/EXTERIOR/COWL GRILLE SCREEN -
INSTALLATION).
AIR EXHAUSTER
REMOVAL
(1) Remove tail lamp, refer to (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/TAIL
LAMP - REMOVAL).
(2) Using a trim stick, pry the top of the air
exhauster downward to detach the retaining clips.
(3) Separate air exhauster from vehicle (Fig. 5).
INSTALLATION
(1) Position air exhauster in opening.
(2) Press air exhauster inward to secure.
(3) Install tail lamp, refer to (Refer to 8 - ELEC-
TRICAL/LAMPS/LIGHTING - EXTERIOR/TAIL
LAMP - INSTALLATION).
Fig. 4 Cowl Cover
1 - PLASTIC NUT
2 - COWL COVER
Fig. 5 D-Pillar Applique & Air Exhauster
1 - D-PILLAR EXHAUSTER
2 - D-PILLAR APPLIQUE
3 - CLIP
4 - TAIL LAMP EXHAUSTER
WJEXTERIOR 23 - 27

HOOD
TABLE OF CONTENTS
page page
GAS PROP
REMOVAL.............................33
INSTALLATION.........................33
HINGE
REMOVAL.............................33
INSTALLATION.........................33
HOOD
REMOVAL.............................33
INSTALLATION.........................34
ADJUSTMENTS
HOOD ADJUSTMENT..................34INSULATION
REMOVAL.............................34
INSTALLATION.........................34
LATCH
REMOVAL.............................34
INSTALLATION.........................34
LATCH RELEASE CABLE
REMOVAL.............................35
INSTALLATION.........................35
GAS PROP
REMOVAL
(1) Raise and support hood.
(2) Using a small flat blade, pry the retainer
attaching hood support prop to lower ball stud.
(3) Slide retainer attaching hood support prop
upper ball stud downward.
(4) Disconnect hood support prop from lower ball
stud and rotate support prop upward and disconnect
from upper ball stud (Fig. 1).
INSTALLATION
(1) Position hood support prop on upper ball stud
(Fig. 1).(2) Slide retainer upward to secure support prop to
upper ball stud.
(3) Position support prop on lower ball stud and
press retainer inward to secure.
HINGE
REMOVAL
(1) Raise and support hood.
(2) Using a wax crayon or equivalent, mark posi-
tion of hinge.
(3) Remove hood hinge prop rod.
(4) Remove nuts attaching hinge to hood (Fig. 1).
(5) Remove bolts attaching hinge to body.
(6) Separate hinge from vehicle.
INSTALLATION
(1) Position hinge on vehicle and align reference
marks.
(2) Install bolts attaching hinge to body.
(3) Install nuts attaching hinge to hood.
(4) Install hood hinge prop rod.
HOOD
REMOVAL
(1) Raise hood.
(2) If equipped, disconnect underhood lamp har-
ness connector. (Connector is located under cowl
cover).
(3) Using a wax crayon or equivalent, mark loca-
tion of hood hinges on hood for installation align-
ment.
(4) Support hood in the open position.
(5) Remove hood support prop rods.
Fig. 1 Hood Support Prop
1 - HOOD
2 - COVER
3 - HINGE
4 - PROP
WJHOOD 23 - 33

INSTRUMENT PANEL SYSTEM
REMOVAL
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.
(2) Remove the trim from the right and left A-pil-
lars. (Refer to 23 - BODY/INTERIOR/A-PILLAR
TRIM - REMOVAL).(3) Remove the top cover from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL TOP COVER - REMOVAL).
(4) Remove the four nuts that secure the instru-
ment panel to the studs on the dash panel near the
windshield fence line (Fig. 1).
(5) Remove the scuff plates from the right and left
front door sills. (Refer to 23 - BODY/INTERIOR/
DOOR SILL SCUFF PLATE - REMOVAL).
(6) Remove the trim panels from the right and left
inner cowl sides. (Refer to 23 - BODY/INTERIOR/
COWL TRIM - REMOVAL).
(7) Remove the console from the floor panel trans-
mission tunnel. (Refer to 23 - BODY/INTERIOR/
FLOOR CONSOLE - REMOVAL).
(8) Remove the fuse cover from the Junction Block
(JB). (Refer to 8 - ELECTRICAL/POWER DISTRIBU-
TION/FUSE COVER - REMOVAL).
(9) Remove the cluster bezel from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - REMOVAL).
(10) Remove the steering column opening cover
from the instrument panel. (Refer to 23 - BODY/IN-
STRUMENT PANEL/STEERING COLUMN OPEN-
ING COVER - REMOVAL).
(11) Remove the steering column bracket from the
instrument panel steering column support bracket.
(Refer to 23 - BODY/INSTRUMENT PANEL/IP
STEERING COLUMN BRACKET - REMOVAL).
Fig. 1 Instrument Panel to Dash Panel Mounting
1 - STUD (4)
2 - NUT (4)3 - INSTRUMENT PANEL
4 - DASH PANEL
WJINSTRUMENT PANEL SYSTEM 23 - 37

(12) Remove the screw that secures the lower tilt-
ing steering column shroud to the steering column
multi-function switch mounting housing (Fig. 2).
(13) Unsnap the two halves of the tilting steering
column shroud from each other and remove both
halves from the steering column.
(14) Disconnect the instrument panel wire harness
connectors from the following steering column compo-
nents (Fig. 3):
²the two lower clockspring connector receptacles
²the left multi-function switch connector recepta-
cle
²the right multi-function switch connector recep-
tacle
²the two ignition switch connector receptacles
²the shifter interlock solenoid connector recepta-
cle
²if the vehicle is so equipped, the Sentry Key
Immobilizer Module (SKIM) connector receptacle.
(15) Turn the ignition switch to the On position,
then release and remove the shifter interlock cable
connector from the ignition lock housing receptacle.
(16) Turn the ignition switch back to the Lock
position to prevent steering wheel rotation and theloss of clockspring centering following steering col-
umn removal.
(17) Remove the bolt that secures the coupler to
the lower steering column shaft (Fig. 4).
Fig. 2 Steering Column Shrouds Remove/Install
1 - UPPER TILTING COLUMN SHROUD
2 - FIXED COLUMN SHROUD
3 - LOWER TILTING COLUMN SHROUD
4 - SCREW
Fig. 3 Steering Column Connections
1 - LEFT MULTIFUNCTION SWITCH CONNECTOR
2 - LOWER CLOCKSPRING CONNECTORS
3 - RIGHT MULTIFUNCTION SWITCH CONNECTOR
4 - SHIFTER INTERLOCK CABLE CONNECTOR
5 - SHIFTER INTERLOCK SOLENOID CONNECTOR
6 - IGNITION SWITCH CONNECTOR RECEPTACLES
7 - SKIM CONNECTOR
Fig. 4 Steering Column Mounting
1 - COLUMN MOUNTING NUTS
2 - COUPLER BOLT
23 - 38 INSTRUMENT PANEL SYSTEMWJ
INSTRUMENT PANEL SYSTEM (Continued)

(18) Remove the four nuts that secure the steering
column to the studs on the instrument panel steering
column support bracket.
(19) Remove the steering column from the instru-
ment panel. Be certain that the steering wheel is
locked and secured from rotation to prevent the loss
of clockspring centering.
(20) Disconnect the left and right body wire har-
ness connectors, the Ignition Off Draw (IOD) wire
harness connector and the fused B(+) wire harness
connector from the connector receptacles of the JB
(Fig. 5).(21) Disconnect the instrument panel wire harness
connectors from the following floor panel transmis-
sion tunnel components (Fig. 6):
²the Airbag Control Module (ACM) connector
receptacle
²the park brake switch terminal
²the transmission shifter connector receptacle.
(22) Remove the two nuts that secure the instru-
ment panel wire harness ground eyelets to the studs
on the floor panel transmission tunnel in front of and
behind the ACM.
(23) Disengage the retainers that secure the
instrument panel wire harness to the floor panel
transmission tunnel.
(24) Remove the instrument panel to center floor
tunnel bracket from the instrument panel and the
floor panel transmission tunnel. (Refer to 23 - BODY/
INSTRUMENT PANEL/IP CENTER FLOOR TUN-
NEL BRACKET - REMOVAL).
(25) Remove the one screw that secures the floor
duct to the heater and air conditioner housing near
the driver side of the floor panel transmission tunnel
and remove the duct from the housing.
(26) If the vehicle is equipped with the manual
heating and air conditioning system, disconnect the
vacuum harness connector located near the driver
side of the floor panel transmission tunnel behind
the driver side floor duct.
(27) Remove the one screw that secures the instru-
ment panel steering column support bracket to the
driver side end of the heater and air conditioner
housing (Fig. 7).
(28) Remove the one screw that secures the instru-
ment panel steering column support bracket to the
intermediate bracket on the driver side dash panel
(Fig. 8).
Fig. 5 Junction Block Connections
1 - SNAP CLIPS
2 - SCREW
3 - CONNECTOR
4 - LEFT BODY WIRE HARNESS
5 - IOD CONNECTOR
6 - FUSED B+ CONNECTOR
7 - RIGHT BODY WIRE HARNESS
8 - SCREW
9 - CONNECTOR
10 - JUNCTION BLOCK
WJINSTRUMENT PANEL SYSTEM 23 - 39
INSTRUMENT PANEL SYSTEM (Continued)

(29) Remove the nut that secures the instrument
panel steering column support bracket to the stud on
the driver side cowl plenum panel (Fig. 9).
(30) Remove the two screws that secure the instru-
ment panel to the driver side cowl side inner panel
(Fig. 10).
(31) Remove the end cap from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL END CAP - REMOVAL).
(32) Remove the lower right center bezel from the
instrument panel. (Refer to 23 - BODY/INSTRU-
MENT PANEL/IP LOWER RIGHT CENTER BEZEL
- REMOVAL).
(33) Disconnect the instrument panel wire harness
connector from the lower cavity of the inline connec-
tor on the passenger side cowl side inner panel (Fig.
11).
(34) Disconnect the two halves of the radio
antenna coaxial cable connector near the right cowl
side inner panel under the end of the instrument
panel.
Fig. 9 Instrument Panel to Cowl Plenum Mounting
1 - COWL PLENUM PANEL
2 - JUNCTION BLOCK
3 - INSTRUMENT PANEL STEERING COLUMN SUPPORT
BRACKET
4 - NUT
5 - STUD
Fig. 10 Instrument Panel to Driver Side Cowl Side
Inner Panel Mounting
1 - INSTRUMENT PANEL
2 - SCREW (2)
3 - COWL SIDE PANEL
Fig. 11 Instrument Panel Passenger Side
Connection
1 - INLINE CONNECTOR
2 - INSTRUMENT PANEL WIRE HARNESS CONNECTOR
WJINSTRUMENT PANEL SYSTEM 23 - 41
INSTRUMENT PANEL SYSTEM (Continued)

(35) Disconnect the two instrument panel wire
harness connectors from the two heater and air con-
ditioner housing connectors located near the blower
motor on the passenger side end of the housing (Fig.
12).
(36) Remove the two screws that secure the pas-
senger side instrument panel structural duct to the
heater and air conditioner housing (Fig. 13).(37) Remove the two screws that secure the instru-
ment panel to the passenger side cowl side inner
panel (Fig. 14).
(38) With the aid of an assistant, lift the instru-
ment panel assembly upward off of the studs on the
dash panel near the windshield fence line and to dis-
engage the molded plastic hook formations on the
instrument panel structural duct from the guide
holes at each cowl side inner panel.
(39)
Pull the instrument panel rearward from the
dash panel and the cowl side inner panels and remove it
through the driver side front door of the vehicle.
Fig. 12 Heater and Air Conditioner Housing
Connections
1 - INSTRUMENT PANEL
2 - HVAC HOUSING
3 - INSTRUMENT PANEL WIRE HARNESS
4 - BLOWER MOTOR
Fig. 13 Passenger Side Instrument Panel to
Heater-A/C Housing Mounting
1 - HEATER AND AIR CONDITIONER HOUSING
2 - INSTRUMENT PANEL STRUCTURAL DUCT
3 - SCREW (2)
Fig. 14 Instrument Panel to Passenger Side Cowl
Side Inner Panel Mounting
1 - COWL SIDE INNER PANEL
2 - INSTRUMENT PANEL STRUCTURAL DUCT
3 - SCREW (2)
23 - 42 INSTRUMENT PANEL SYSTEMWJ
INSTRUMENT PANEL SYSTEM (Continued)