2003 JEEP GRAND CHEROKEE clock

(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)

(23) Reconnect the instrument panel wire harness
connectors to the following floor panel transmission
tunnel components:
²the Airbag Control Module (ACM) connector
receptacle
²the park brake switch terminal
²the transmission shifter connector receptacle.
(24) Reconnect the left and right body wire har-
ness connectors, the Ignition Off Draw (IOD) wire
harness connector and the fused B(+) wire harness
connector to the connector receptacles of the Junction
Block (JB) and tighten the connector screws (Fig. 5).
Tighten the screws to 4 N´m (36 in. lbs.).
(25) Engage the lower steering column shaft with
the steering shaft coupler and position the steering
column to the mounting studs on the instrument
panel steering column support bracket (Fig. 4).
(26) Install and tighten the four nuts that secure
the steering column to the studs on the instrument
panel steering column support bracket. Tighten the
nuts to 11.8 N´m (105 in. lbs.).
(27) Install and tighten the bolt that secures the
coupler to the lower steering column shaft. Tighten
the bolt to 49 N´m (36 ft. lbs.).
(28) Turn the ignition switch to the On position,
then install the shifter interlock cable connector into
the ignition lock housing receptacle.
(29) Reconnect the instrument panel wire harness
connectors to 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.
(30) Position the lower tilting steering column
shroud to the steering column multi-function switchmounting housing, then install and tighten the screw
that secures the shroud to the housing (Fig. 2).
Tighten the screw to 1.9 N´m (17 in. lbs.).
(31) Position the upper tilting steering column
shroud over the steering column. Align the upper and
lower shrouds with each other and snap the two
halves together.
(32) Reinstall the steering column bracket onto the
instrument panel steering column support bracket.
(Refer to 23 - BODY/INSTRUMENT PANEL/IP
STEERING COLUMN BRACKET - INSTALLA-
TION).
(33) Reinstall the steering column opening cover
onto the instrument panel. (Refer to 23 - BODY/IN-
STRUMENT PANEL/STEERING COLUMN OPEN-
ING COVER - INSTALLATION).
(34) Reinstall the cluster bezel onto the instru-
ment panel. (Refer to 23 - BODY/INSTRUMENT
PANEL/CLUSTER BEZEL - INSTALLATION).
(35) Reinstall the fuse cover onto the Junction
Block (JB). (Refer to 8 - ELECTRICAL/POWER DIS-
TRIBUTION/FUSE COVER - INSTALLATION).
(36) Reinstall the console onto the floor panel
transmission tunnel. (Refer to 23 - BODY/INTERI-
OR/FLOOR CONSOLE - INSTALLATION).
(37) Reinstall the trim panels onto the right and
left inner cowl sides. (Refer to 23 - BODY/INTERI-
OR/COWL TRIM - INSTALLATION).
(38) Reinstall the scuff plates onto the right and
left front door sills. (Refer to 23 - BODY/INTERIOR/
DOOR SILL SCUFF PLATE - INSTALLATION).
(39) Reinstall the top cover onto the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL TOP COVER - INSTALLA-
TION).
(40) Reinstall the trim onto the right and left
A-pillars. (Refer to 23 - BODY/INTERIOR/A-PILLAR
TRIM - INSTALLATION).
(41) Reconnect the battery negative cable.
23 - 44 INSTRUMENT PANEL SYSTEMWJ
INSTRUMENT PANEL SYSTEM (Continued)

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.
(1) Disconnect and isolate the battery negative
cable.
(2) Roll the glove box down from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
GLOVE BOX - STANDARD PROCEDURE - GLOVE
BOX ROLL DOWN).
NOTE: Be certain to use care not to damage or
remove the glove box hinge bumpers on the lower
instrument panel glove box opening reinforcement
when removing the glove box from the instrument
panel.
(3) Firmly grip both ends of the glove box door,
then twist and pull the door as necessary to disen-
gage the inboard hinge hook from the inboard hinge
pin on the instrument panel and reorient the hook to
the underside of the hinge pin (Fig. 18).(4) Raise the glove box door until it is perpendicu-
lar to the instrument panel.
(5) Twist the door slightly in the counterclockwise
direction and use a jiggling action to disengage the
remaining two hinge hooks from their respective
hinge pins on the instrument panel.
(6) Remove the glove box from the instrument
panel.
INSTALLATION
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: Be certain to use care not to damage or
remove the glove box hinge bumpers on the lower
instrument panel glove box opening reinforcement
when installing the glove box onto the instrument
panel.
(1) Position the glove box to the instrument panel
with the outboard hinge hook oriented over the out-
board hinge pin and the center hinge hook oriented
under the center hinge pin (Fig. 18).
(2) Raise the glove box door until it is perpendicu-
lar to the instrument panel.
(3) Firmly grip both ends of the glove box door and
twist the door slightly in the clockwise direction to
engage the inboard glove box hinge hook over the
inboard hinge pin on the instrument panel.
(4) Roll the glove box back up into the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
GLOVE BOX - STANDARD PROCEDURE - GLOVE
BOX ROLL DOWN).
(5) Reconnect the battery negative cable.
Fig. 18 Glove Box Remove/Install
1 - GLOVE BOX HINGE HOOKS AND HINGE PINS (3)
WJINSTRUMENT PANEL SYSTEM 23 - 47
GLOVE BOX (Continued)

FRONT HEADREST SLEEVE
REMOVAL
(1) Remove head restraint (Refer to 23 - BODY/
SEATS/FRONT HEADREST - REMOVAL).
(2) Remove seat back cover (Refer to 23 - BODY/
SEATS/FRONT SEAT BACK COVER - REMOVAL).
(3) Remove hog rings attaching cushion pad to
seat back frame (Fig. 2).
(4) Remove cushion pad from seat back frame.
(5) Rotate head restraint sleeve 1/4 turn counter-
clockwise to release retaining tab.
(6) Pull sleeve from seat back frame (Fig. 3).
INSTALLATION
(1) Position sleeve in seat back frame.
(2) Rotate head restraint sleeve 1/4 turn clockwise
to engage retaining tab.
(3) Install cushion pad onto seat back frame.
(4) Install hog rings attaching cushion pad to seat
back frame.
(5)
Install seat back cover (Refer to 23 - BODY/
SEATS/FRONT SEAT BACK COVER - INSTALLATION).
(6) Install head restraint (Refer to 23 - BODY/
SEATS/FRONT HEADREST - INSTALLATION).
FRONT SEAT
REMOVAL
(1) Move seat to full rearward position.(2) Remove front bolts attaching seat to floor pan
(Fig. 4).
(3) Move seat to full forward position.
(4) Using a trim stick, pry cover from seat track
(power seat only).
(5) Remove rear bolts attaching seat to floor pan.
(6) If equipped, disconnect power seat wire har-
ness connector.
(7) Remove seat from vehicle.
Fig. 2 Cushion Pad
1 - HOG RING
2 - SEAT BACK CUSHION PAD
Fig. 3 Head Restraint Sleeve
1 - HEAD RESTRAINT SLEEVE
2 - SEAT BACK FRAME
3 - RETAINING TAB
Fig. 4 Front Bucket Seat
1 - POWER BUCKET SEAT
2 - FLOOR PAN
3 - SEAT TRACK COVER
23 - 84 SEATSWJ

REAR HEADREST SLEEVE
REMOVAL
(1) Remove seat back (Refer to 23 - BODY/SEATS/
REAR SEAT BACK - REMOVAL).
(2) Remove head rest (Refer to 23 - BODY/SEATS/
REAR HEADREST - REMOVAL).
(3) Remove head rest caps.
(4) Remove seat back cover (Refer to 23 - BODY/
SEATS/REAR SEAT BACK COVER - REMOVAL).
(5) Rotate head rest sleeve 1/4 turn counter-clock-
wise to release retaining tab.
(6) Pull sleeve from seat back frame.
INSTALLATION
(1) Position sleeve in seat back frame.
(2) Rotate head rest sleeve 1/4 turn clockwise to
engage retaining tab.
(3) Install seat back cover (Refer to 23 - BODY/
SEATS/REAR SEAT BACK COVER - INSTALLA-
TION).
(4) Install head rest caps.
NOTE: The head rest cap with the taller button is
always on the inboard side of the seat back.
(5) Install the head rest (Refer to 23 - BODY/
SEATS/REAR HEADREST - INSTALLATION).
NOTE: The folding head rest release knob is always
on the outboard side.
(6) Install the seat back (Refer to 23 - BODY/
SEATS/REAR SEAT BACK - INSTALLATION).
REAR SEAT BACK
REMOVAL
(1) Move rear seat cushions to forward cargo posi-
tion.
(2) Remove bolts attaching seatback side support
bracket to floor pan (right side) (Fig. 11).
(3) Tilt seatback forward, and slide it outboard to
detach it from pin on center pivot bracket.
(4) Remove right side (60%) seatback from vehicle.
(5) Remove bolts attaching seatback side support
bracket and center pivot bracket to floor pan (left
side).
(6) Remove left side (40%) seatback from vehicle.
INSTALLATION
(1) Position left side (40%) seatback in vehicle.
(2) Position left side support bracket and center
pivot bracket with bolt holes aligned and install
bolts. Tighten bolts to 28 N´m (20 ft. lbs.) torque.
(3) Position right side (60%) seatback in vehicle.
(4) Install seatback onto center pivot bracket pin.
Ensure seat back is properly engaged on the center
pivot pin.
(5) Position right side support bracket with bolt
holes aligned and install bolts. Tighten bolts to 28
N´m (20 ft. lbs.) torque.
(6) Return seat cushions to seating position.
Fig. 11 Rear Seat Back
1 - SEAT BACK
2 - FLOOR PAN
3 - CENTER PIVOT BRACKET
4 - SIDE SUPPORT BRACKET
WJSEATS 23 - 89

LIFTGATE OPENING
WEATHERSTRIP
REMOVAL
(1) Pull seal away from flange around edge of lift-
gate opening.
(2) Separate weatherstrip from opening (Fig. 9).
(3) Clean weatherstrip flange as necessary.
INSTALLATION
(1) Position weatherstrip in opening with left end
of seal at opening centerline.
(2) Press weatherstrip onto flange in a clockwise
direction.
(3) Center and butt weatherstrip ends together at
centerline.
(4) If necessary, cut surplus from weatherstrip
(non-plug end only).
RDR INNER BELT
WEATHERSTRIP
REMOVAL
(1) Remove door trim panel (Refer to 23 - BODY/
DOORS - REAR/TRIM PANEL - REMOVAL).
(2) Using a trim stick, carefully pry rear inner
edge of inner belt weatherstrip upward.
(3) Grasp weatherstrip and pull upward to sepa-
rate from door flange (Fig. 10).
INSTALLATION
(1) Position weatherstrip on door flange.
(2) Firmly press downward to seat weatherstrip on
flange.
(3) Install trim panel (Refer to 23 - BODY/DOORS
- REAR/TRIM PANEL - INSTALLATION).
RDR OUTER BELT
WEATHERSTRIP
REMOVAL
(1) Remove trim panel (Refer to 23 - BODY/
DOORS - REAR/TRIM PANEL - REMOVAL).
(2) Using a small flat blade, disengage tangs
attaching outer belt weatherstrip to inner door panel.
(3) Lift weatherstrip upward and separate from
door (Fig. 10).
INSTALLATION
(1) Position the weatherstrip onto the door flange.
(2) Force the weatherstrip onto door flange and
engage tangs. Continue rearward until it is seated on
flange.
(3) Instal trim panel (Refer to 23 - BODY/DOORS
- REAR/TRIM PANEL - INSTALLATION).
Fig. 9 Liftgate Opening Weatherstrip
1 - LIFTGATE
2 - WEATHERSTRIP
Fig. 10 Rear Door Inner/Outer Belt Weatherstrip
1 - INNER BELT WEATHERSTRIP
2 - OUTER BELT WEATHERSTRIP
WJWEATHERSTRIP/SEALS 23 - 109

Both the manual A/C Heater control panel and the
AZC control panel are serviced only as complete
units and cannot be repaired. If faulty or damaged,
the entire control panel unit must be replaced.
DIAGNOSIS AND TESTING - AUTOMATIC ZONE
CONTROL SYSTEM
The Automatic Zone Control (AZC) control module
has a system self-diagnostic mode which continuously
monitors various parameters during normal system
operation. If a system fault is detected, a current and
historical fault is recorded. When the current fault is
cleared, the historical fault remains until reset (man-
ually or automatically). Both the current and histor-
ical fault codes can be accessed through either the
front panel, or over the Programmable Communica-
tions Interface (PCI) bus using a DRBIIItscan tool,
and the appropriate diagnostic information.
The AZC control module is capable of three differ-
ent types of self-diagnostic tests, as follows:
²Fault Code Tests
²Input Circuit Tests
²Output Circuit/Actuator Tests
The information that follows describes:
²How to read the self-diagnostic display
²How to enter the AZC control module self-diag-
nostic test mode
²How to select the self-diagnostic test types
²How to perform the different tests
ENTERING THE AZC SELF-DIAGNOSTIC MODE
To enter the AZC self-diagnostic mode, perform the
following:
(1) Depress the a/c and recirc buttons at the same
time and hold. Rotate the left temperature control
knob clockwise (CW) one detent.
(2) If you continue to keep the a/c and recirc but-
tons depressed, the AZC control module will perform
a Segment Test of the Vacuum Fluorescent (VF) dis-
play. In the Segment Test you should see all of the
display segments illuminate as long as both buttons
are held. If a display segment fails to illuminate, the
vacuum fluorescent display is faulty and the a/c
heater control must be replaced.
(3) After viewing the Segment Test, release the
A/C and Recirc buttons and the display will clear
momentarily.Ifa0isdisplayed, then no faults
are set in the system.Should there be any faults,
either9current9or9historical9, all fault codes will be
displayed in ascending numerical sequence (note no
effort is made to display fault codes in chronological
order). Each fault code is displayed for one second
before the next code is displayed. Once all fault codes
have been displayed, the system will then repeat the
fault code numbers. This will continue until the left
side set temperature control is moved at least onedetent position in the CW direction or the ignition is
turned9OFF9.
FAULT CODE TESTS
Fault codes are two-digit numbers that identify a
circuit that is malfunctioning. There are two differ-
ent kinds of fault codes.
1.Current Fault Codes- Current means the
fault is present right now. There are two types of cur-
rent faults: input faults, and system faults.
2.Historical Fault Codes- Historical or stored
means that the fault occurred previously, but is not
present right now. A majority of historical fault codes
are caused by intermittent wire harness or wire har-
ness connector problems.
CURRENT FAULT CODES
Input faults 01 = IR thermister circuit
open
02 = IR thermister circuit
shorted
03 = Fan pot shorted
04 = Fan pot open
05 = Mode pot shorted
06 = Mode pot open
07 = IR sensor delta too
large
08 = Reserved
09 = Reserved
10 = One of four motor
drivers has drive9A9
shorted to ground
11 = Engine air intake
temperature Buss
message missing
12 = Country code Buss
message missing
24 - 18 CONTROLSWJ
A/C HEATER CONTROL (Continued)

HISTORICAL FAULT CODES
Input faults 33 = IR thermister circuit was open
34 = IR thermister circuit was shorted
35 = Fan pot was shorted
36 = Fan pot was open
37 = Mode pot was shorted
38 = Mode pot was open
39 = IR sensor delta was too large
40 = Reserved
41 = Reserved
42 = One of four motor drivers had drive9A9shorted to
ground
43 = Engine air intake temperature Buss message
missing
44 = Country code Buss message missing
System Faults 45 = Mode motor was not responding
46 = AI (Recirc) motor was not responding
47 = Left temperature door was not responding
48 = Right temperature door was not responding
49 = Mode door travel range too small
50 = Mode door travel range too large
51 = AI (Recirc) door travel range too small
52 = AI (Recirc) door travel range too large
53 = Left temperature door travel too small
54 = Left temperature door travel too large
55 = Right temperature door travel too small
56 = Right temperature door travel too large
57 = Calibration check sum error
58 = Engine coolant temp bus message missing
59 = Vehicle speed bus message missing
60 = Engine RPM bus message missing
61 = OAT bus message missing
62 = Display intensity bus message missing
63 = VIN number bus message missing
64 = Raw OAT bus message was missing
65 = Reserved
66 = Reserved
67 = Reserved
NOTE: A battery disconnect will erase all faults
stored in Random Access Memory (RAM) of the
AZC control module. It is recommended that all
faults be recorded before they are erased.RETRIEVING FAULT CODES
(1) To begin the fault code tests, depress the A/C
and Recirc buttons at the same time and rotate the
left temperature control knob clockwise (CW) one
detent, then release the push-button.
24 - 20 CONTROLSWJ
A/C HEATER CONTROL (Continued)