8J Instrument JEEP GRAND CHEROKEE 2002 WJ / 2.G Owner's Manual

(4) Disconnect the instrument panel wire harness
connectors and the antenna coaxial cable connector
from the receptacles on the rear of the radio receiver.
(5) Remove the radio receiver from the instrument
panel.
INSTALLATION
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, SEAT BELT TENSIONER, SIDE
AIRBAG, 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) Position the radio receiver to the instrument
panel.
(2) Reconnect the instrument panel wire harness
connectors and the antenna coaxial cable connector
to the receptacles on the rear of the radio receiver.
(3) Install the four mounting screws. Tighten the
screws to 2.2 N´m (20 in. lbs.).(4) Install the center upper bezel onto the instru-
ment panel. (Refer to 23 - BODY/INSTRUMENT
PANEL - INSTALLATION) for the procedures.
(5) Reconnect the battery negative cable.
RADIO NOISE SUPPRESSION
GROUND STRAP
DESCRIPTION
Radio Frequency Interference (RFI) and Electro-
Magnetic Interference (EMI) noise suppression is
accomplished primarily through circuitry internal to
the radio receivers. These internal suppression
devices are only serviced as part of the radio receiver.
External suppression devices that are used on this
vehicle to control RFI or EMI noise include the fol-
lowing:
²Radio antenna base ground
²Radio receiver chassis ground wire or strap
²Engine-to-body ground strap(s)
²Exhaust system-to-body and transmission
ground strap (4.7L engines only)
²Resistor-type spark plugs
²Radio suppression-type secondary ignition wir-
ing.
For more information on the spark plugs and sec-
ondary ignition components, refer to Ignition System
in Ignition System.
REMOVAL
REMOVAL - ENGINE-TO-BODY GROUND
STRAP
(1) Remove the screw that secures the engine-to-
body ground strap eyelet to the lower plenum panel
(Fig. 13) or (Fig. 14).
(2) On models with a 4.0L engine, remove the nut
that secures the engine-to-body ground strap eyelet
to the stud on the right rear side of the engine cyl-
inder head.
(3) On models with a 4.7L engine, remove the two
nuts that secure the engine-to-body ground strap eye-
lets to the studs on the right and left rear sides of
the engine intake manifold.
(4) Remove the engine-to-body ground strap eye-
let(s) from the stud(s) on the engine.
(5) Remove the engine-to-body ground strap from
the engine compartment.
Fig. 12 Radio Remove/Install
1 - INSTRUMENT PANEL
2 - SCREW (4)
3 - RADIO RECEIVER
8A - 18 AUDIOWJ
RADIO (Continued)

REMOVAL - EXHAUST-TO-BODY GROUND
STRAP
(1) Raise and support vehicle.
(2) Remove fasteners from exhaust, crossmember
and transmission/transfer case.
(3) Remove the ground strap.
INSTALLATION
INSTALLATION - ENGINE TO BODY GROUND
STRAP
(1) Position the engine-to-body ground strap into
the engine compartment.
(2) Install the engine-to-body ground strap eye-
let(s) onto the stud(s) on the engine.
(3) On models with a 4.0L engine, install and
tighten the nut that secures the engine-to-body
ground strap eyelet to the stud on the right rear side
of the engine cylinder head. Tighten the nut to 5.6
N´m (50 in. lbs.).
(4) On models with a 4.7L engine, install and
tighten the two nuts that secure the engine-to-body
ground strap eyelets to the studs on the right and
left rear sides of the engine intake manifold. Tighten
the nuts to 11.3 N´m (100 in. lbs.).(5) Install and tighten the screw that secures the
engine-to-body ground strap eyelet to the lower ple-
num panel. Tighten the screw to 4.5 N´m (40 in. lbs.).
INSTALLATION - EXHAUST-TO-BODY GROUND
STRAP
(1) Install the ground strap to the exhaust, cross-
member and transmission/transfer case.
(2) Install the fasteners.
(3) Lower the vehicle.
REMOTE SWITCHES
DESCRIPTION
Remote radio control switches are included on
models equipped with the optional leather-wrapped
steering wheel. The two rocker-type switch units
(Fig. 15) are mounted in the upper spoke covers of
the rear (instrument panel side) steering wheel trim
cover. The switch unit on the left side is the seek
switch and has seek up, seek down, and preset sta-
tion advance switch functions. The switch unit on the
right side is the volume control switch and has vol-
ume up, volume down, and mode advance switch
functions.
Fig. 13 Engine-To-Body Ground Strap Remove/
Install - 4.0L Engine
1 - SCREW
2 - LOWER PLENUM PANEL
3 - ENGINE
4 - STUD
5 - NUT
6 - GROUND STRAP
Fig. 14 Engine-To-Body Ground Strap Remove/
Install - 4.7L Engine
1 - GROUND STRAP
2 - SCREW
3 - ENGINE
4 - STUD (2)
5 - NUT (2)
6 - LOWER PLENUM PANEL
WJAUDIO 8A - 19
RADIO NOISE SUPPRESSION GROUND STRAP (Continued)

The two remote radio switch units share a common
steering wheel wire harness with the vehicle speed
control switches. The steering wheel wire harness is
connected to the instrument panel wire harness
through the clockspring. (Refer to 8 - ELECTRICAL/
RESTRAINTS/CLOCKSPRING - DESCRIPTION) for
more information on this component.
For complete circuit diagrams, refer to the appro-
priate wiring information. The wiring information
includes wiring diagrams, proper wire and connector
repair procedures, details of wire harness routing
and retention, connector pin-out information and
location views for the various wire harness connec-
tors, splices and grounds.
OPERATION
The six switches in the two remote radio switch
units are normally open, resistor multiplexed
momentary switches that are hard wired to the Body
Control Module (BCM) through the clockspring. The
BCM sends a five volt reference signal to both switch
units on one circuit, and senses the status of all of
the switches by reading the voltage drop on a second
circuit.
When the BCM senses an input (voltage drop) from
any one of the remote radio switches, it sends the
proper switch status messages on the ProgrammableCommunication Interface (PCI) data bus network to
the radio receiver. The electronic circuitry within the
radio receiver is programmed to respond to these
remote radio switch status messages by adjusting the
radio settings as requested. For diagnosis of the
BCM or the PCI data bus, the use of a DRB scan tool
and the proper Diagnostic Procedures manual are
recommended.
For more information on the features and control
functions for each of the remote radio switches, see
the owner's manual in the vehicle glove box.
DIAGNOSIS AND TESTING - REMOTE
SWITCHES
Any diagnosis of the Audio system should
begin with the use of the DRB IIItdiagnostic
tool. For information on the use of the DRB
IIIt, refer to the appropriate Diagnostic Service
Manual.
For complete circuit diagrams, refer to the appro-
priate wiring information. The wiring information
includes wiring diagrams, proper wire and connector
repair procedures, details of wire harness routing
and retention, connector pin-out information and
location views for the various wire harness connec-
tors, splices and grounds.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, SEAT BELT TENSIONER, SIDE
AIRBAG, 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. Remove the remote radio switch(es) (Fig. 16)
from the steering wheel.
(2) Use an ohmmeter to check the switch resis-
tances as shown in the Remote Radio Switch Test
chart. If the remote radio switch resistances check
OK, go to Step 3. If not OK, replace the faulty
switch.
Fig. 15 Remote Radio Switches
1 - PRESET ADVANCE
2 - SEEK
3 - MODE ADVANCE
4 - VOLUME
8A - 20 AUDIOWJ
REMOTE SWITCHES (Continued)

Remote Radio Switch Test
Switch Switch Position Resistance
Right
(White)Volume Up 1.210 Kilohms
Right
(White)Volume Down 3.010 Kilohms
Right
(White)Mode Advance 0.0511 Kilohms
Left
(Black)Seek Up 0.261 Kilohms
Left
(Black)Seek Down 0.681 Kilohms
Left
(Black)Pre-Set Station
Advance0.162 Kilohms
(3) Reconnect the battery negative cable. Turn the
ignition switch to the On position. Check for 5 volts
at the radio control mux circuit cavities of the steer-
ing wheel wire harness connectors for both remote
radio switches. If OK, go to Step 4. If not OK, repair
the open or shorted radio control mux circuit to the
Body Control Module (BCM) as required.
(4) Disconnect and isolate the battery negative
cable. Disconnect the 22-way instrument panel wire
harness connector from the BCM. Check for continu-
ity between the remote radio switch ground circuit
cavities of the steering wheel wire harness connec-
tors for both remote radio switches and a good
ground. There should be no continuity. If OK, go to
Step 5. If not OK, repair the shorted remote radio
switch ground circuit to the BCM as required.(5) Check for continuity between the remote radio
switch ground circuit cavities of the steering wheel
wire harness connectors for both remote radio
switches and the 22-way instrument panel wire har-
ness connector for the BCM. There should be conti-
nuity. If OK, refer to the proper Diagnostic
Procedures manual to test the BCM and the PCI
data bus. If not OK, repair the open remote radio
switch ground circuit as required.
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO ELECTRICAL, RESTRAINTS
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the driver side airbag from the steer-
ing wheel. (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - REMOVAL) for the procedures.
(3) Remove the speed control switch located on the
same side of the steering wheel as the remote radio
switch that is being serviced. Refer to Electrical,
Speed Control for the procedures.
(4) Disconnect the steering wheel wire harness
connector from the connector receptacle of the remote
radio switch (Fig. 17).
(5) From the inside of the steering wheel rear trim
cover, press firmly and evenly outward on the back of
the switch.
(6) From the outside of the steering wheel rear
trim cover, remove the remote radio switch from the
trim cover mounting hole.
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO ELECTRICAL, RESTRAINTS
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Position the remote radio switch to the mount-
ing hole on the outside of the steering wheel rear
trim cover. Be certain that the connector receptacle is
oriented toward the bottom of the switch and pointed
toward the center of the steering wheel.
Fig. 16 Remote Radio Switches
1 - BLACK (LEFT) SWITCH
2 - WHITE (RIGHT) SWITCH
WJAUDIO 8A - 21
REMOTE SWITCHES (Continued)

(2) Press firmly and evenly on the remote radio
switch until each of the switch snap features is fully
engaged in the mounting hole of the steering wheel
rear trim cover.
(3) Reconnect the steering wheel wire harness con-
nector to the connector receptacle of the remote radio
switch.
(4) Install the speed control switch onto the steer-
ing wheel. Refer to Electrical, Speed Control for the
procedures.
(5) Install the driver side airbag onto the steering
wheel. (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - INSTALLATION) for the proce-
dures.
(6) Reconnect the battery negative cable.
SPEAKER
DESCRIPTION
STANDARD
The standard equipment speaker system includes
speakers in six locations. One 6.4 centimeter (2.50
inch) diameter tweeter is installed on each end of the
instrument panel top pad. One 15.2 by 22.9 centime-
ter (6 by 9 inch) full-range speaker is located in each
front door. There is also one full-range 16.5 centime-
ter (6.5 inch) diameter full-range speaker located in
each rear door.
PREMIUM
The optional premium speaker system features six
Infinity model speakers in six locations. Each of the
standard speakers is replaced with Infinity model
speakers. One 6.4 centimeter (2.50 inch) diameter
Infinity tweeter is installed on each end of the
instrument panel top pad. One 15.2 by 22.9 centime-
ter (6 by 9 inch) Infinity woofer is located in each
front door. There is also one full-range 16.5 centime-
ter (6.5 inch) diameter Infinity full-range speaker
located in each rear door. The premium speaker sys-
tem also includes an additional Infinity power ampli-
fier. The total available power of the premium
speaker system is about 180 watts.
OPERATION
STANDARD
Each of the two tweeters and four full-range speak-
ers used in the standard speaker system is driven by
the amplifier that is integral to the factory-installed
radio receiver. For complete circuit diagrams, refer to
the appropriate wiring information. The wiring infor-
mation includes wiring diagrams, proper wire and
connector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds.
PREMIUM
The six Infinity speakers used in the premium
speaker system are all driven by the radio receiver
through an Infinity power amplifier. For complete cir-
cuit diagrams, refer to the appropriate wiring infor-
mation. The wiring information includes wiring
diagrams, proper wire and connector repair proce-
dures, details of wire harness routing and retention,
connector pin-out information and location views for
the various wire harness connectors, splices and
grounds.
Fig. 17 Remote Radio Switches Remove/Install
1 - STEERING WHEEL
2 - SPEED CONTROL SWITCH
3 - SCREW
4 - DRIVER SIDE AIRBAG MODULE
5 - REMOTE RADIO SWITCH
6 - REAR TRIM COVER
8A - 22 AUDIOWJ
REMOTE SWITCHES (Continued)

DIAGNOSIS AND TESTING - SPEAKER
Any diagnosis of the Audio system should
begin with the use of the DRB IIItdiagnostic
tool. For information on the use of the DRB
IIIt, refer to the appropriate Diagnostic Service
Manual.
Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, SEAT BELT TENSIONER, SIDE
AIRBAG, 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.
CAUTION: The speaker output of the radio is a
ªfloating groundº system. Do not allow any speaker
lead to short to ground, as damage to the radio
may result.
(1) Turn the ignition switch to the On position.
Turn the radio receiver on. Adjust the balance and
fader controls to check the performance of each indi-
vidual speaker. Note the speaker locations that are
not performing correctly. Go to Step 2.
(2) Turn the radio receiver off. Turn the ignition
switch to the Off position. Disconnect and isolate the
battery negative cable. Remove the radio receiver
from the instrument panel. If the vehicle is equipped
with the Infinity speaker package, also disconnect
the wire harness connectors at the power amplifier.
Check both the speaker feed (+) circuit and return (±)
circuit cavities for the inoperative speaker location(s)
at the radio receiver wire harness connectors for con-
tinuity to ground. In each case, there should be no
continuity. If OK, go to Step 3. If not OK, repair the
shorted speaker feed (+) and/or return (±) circuit(s) to
the speaker as required.
(3) If the vehicle is equipped with the Infinity
speaker package, go to Step 6. If the vehicle is
equipped with the standard speaker system, check
the resistance between the speaker feed (+) circuit
and return (±) circuit cavities of the radio receiverwire harness connectors for the inoperative speaker
location(s). The meter should read between 2 and 3
ohms (speaker resistance). If OK, go to Step 4. If not
OK, go to Step 5.
(4) Install a known good radio receiver. Connect
the battery negative cable. Turn the ignition switch
to the On position. Turn on the radio receiver and
test the speaker operation. If OK, replace the faulty
radio receiver. If not OK, turn the radio receiver off,
turn the ignition switch to the Off position, discon-
nect and isolate the battery negative cable, remove
the test radio receiver, and go to Step 5.
(5) Disconnect the wire harness connector at the
inoperative speaker. Check for continuity between
the speaker feed (+) circuit cavities of the radio
receiver wire harness connector and the speaker wire
harness connector. Repeat the check between the
speaker return (±) circuit cavities of the radio
receiver wire harness connector and the speaker wire
harness connector. In each case, there should be con-
tinuity. If OK, replace the faulty speaker. If not OK,
repair the open speaker feed (+) and/or return (±) cir-
cuit(s) as required.
(6) For each inoperative speaker location, check for
continuity between the speaker feed (+) circuit cavi-
ties of the radio receiver wire harness connectors and
the power amplifier wire harness connectors. Repeat
the check for each inoperative speaker location
between the speaker return (±) circuit cavities of the
radio receiver wire harness connectors and the power
amplifier wire harness connectors. In each case,
there should be continuity. If OK, go to Step 7. If not
OK, repair the open speaker feed (+) and/or return
(±) circuit(s) as required.
(7) Check for continuity between the two ground
circuit cavities of the power amplifier wire harness
connector and a good ground. There should be conti-
nuity. If OK, go to Step 8. If not OK, repair the open
ground circuit(s) to ground as required.
(8) Check the fused B(+) fuse for the power ampli-
fier in the junction block. If OK, go to Step 9. If not
OK, repair the shorted circuit or component as
required and replace the faulty fuse.
(9) Install the radio receiver. Connect the battery
negative cable. Check for battery voltage at the fused
B(+) fuse for the power amplifier in the junction
block. If OK, go to Step 10. If not OK, repair the
open fused B(+) circuit to the Power Distribution
Center (PDC) fuse as required.
(10) Check for battery voltage at the two fused
B(+) circuit cavities of the power amplifier wire har-
ness connector. If OK, go to Step 11. If not OK, repair
the open fused B(+) circuit(s) to the power amplifier
fuse in the junction block as required.
(11) Turn the ignition switch to the On position.
Turn the radio receiver on. Check for battery voltage
WJAUDIO 8A - 23
SPEAKER (Continued)

at the enable signal to amplifier circuit cavity of the
power amplifier wire harness connector. If OK, go to
Step 12. If not OK, repair the open enable signal to
amplifier circuit to the radio receiver as required.
(12) Turn the radio receiver off. Turn the ignition
switch to the Off position. Disconnect and isolate the
battery negative cable. For each inoperative speaker
location, check both the amplified feed (+) circuit and
the amplified return (±) circuit cavities of the power
amplifier wire harness connectors for continuity to
ground. In each case there should be no continuity. If
OK, go to Step 13. If not OK, repair the shorted
amplified feed (+) and/or amplified return (±) cir-
cuit(s) to the speaker as required.
(13) For each inoperative speaker location, check
the resistance between the amplified feed (+) circuit
and the amplified return (±) circuit cavities of the
power amplifier wire harness connectors. The meter
should read between 2 and 3 ohms (speaker resis-
tance). If OK, replace the faulty power amplifier. If
not OK, go to Step 14.
(14) Disconnect the speaker wire harness connec-
tor at the inoperative speaker. Check for continuity
between the amplified feed (+) circuit cavities of the
speaker wire harness connector and the power ampli-
fier wire harness connector. Repeat the check
between the amplified return (±) circuit cavities of
the speaker wire harness connector and the power
amplifier wire harness connector. In each case there
should be continuity. If OK, replace the faulty
speaker. If not OK, repair the open amplified feed (+)
and/or amplified return (±) circuit(s) as required.
REMOVAL
REAR DOOR SPEAKER
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the trim panel from the rear door.
(Refer to 23 - BODY/DOORS - REAR/TRIM PANEL -
REMOVAL) for the procedures.
(3) Remove the three screws that secure the
speaker to the rear door inner panel (Fig. 18).
(4) Disconnect the rear door wire harness connec-
tor from the speaker connector receptacle.
(5) Remove the speaker from the rear door inner
panel.
INSTRUMENT PANEL SPEAKER
REMOVAL
(1) Disconnect and isolate the battery negative
cable.(2) Remove the top cover from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL TOP COVER - REMOVAL).
(3) Disconnect the instrument panel wire harness
connector from the speaker wire harness connector
(Fig. 19).
(4) Remove the two screws that secure the speaker
to the top of the instrument panel.
(5) Remove the speaker from the top of instrument
panel.
FRONT DOOR SPEAKER
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the trim panel from the front door.
(Refer to 23 - BODY/DOOR - FRONT/TRIM PANEL -
REMOVAL) for the procedures.
(3) Remove the four screws that secure the
speaker to the front door inner panel (Fig. 20).
(4) Disconnect the front door wire harness connec-
tor from the speaker connector receptacle.
(5) Remove the speaker from the front door inner
panel.
Fig. 18 Rear Door Speaker Remove/Install
1 - PLASTIC NUT (3)
2 - REAR DOOR
3 - REAR DOOR SPEAKER
4 - REAR DOOR WIRE HARNESS
5 - SCREW (3)
8A - 24 AUDIOWJ
SPEAKER (Continued)

INSTALLATION
INSTALLATION - REAR DOOR SPEAKER
(1) Position the speaker to the rear door inner
panel.
(2) Reconnect the rear door wire harness connector
to the speaker connector receptacle.
(3) Position the speaker onto the rear door inner
panel.
(4) Install and tighten the three screws that secure
the speaker to the rear door inner panel. Tighten the
screws to 2.2 N´m (20 in. lbs.).
(5) Install the trim panel onto the rear door. (Refer
to 23 - BODY/DOORS - REAR/TRIM PANEL -
INSTALLATION) for the procedures.
(6) Reconnect the battery negative cable.
INSTALLATION - INSTRUMENT PANEL
SPEAKER
(1) Position the speaker onto the top of the instru-
ment panel.
(2) Install and tighten the two screws that secure
the speaker to the top of the instrument panel.
Tighten the screws to 2.2 N´m (20 in. lbs.).
(3) Reconnect the instrument panel wire harness
connector to the speaker wire harness connector.(4) Install the top cover onto the instrument panel.
(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL TOP COVER - INSTALLA-
TIONl for the procedures.
(5) Reconnect the battery negative cable.
INSTALLATION - FRONT DOOR SPEAKER
(1) Position the speaker to the front door inner
panel.
(2) Reconnect the front door wire harness connec-
tor to the speaker connector receptacle.
(3) Position the speaker onto the front door inner
door panel.
(4) Install and tighten the four screws that secure
the speaker to the front door inner panel. Tighten
the screws to 2.2 N´m (20 in. lbs.).
(5) Install the trim panel onto the front door.
(Refer to 23 - BODY/DOOR - FRONT/TRIM PANEL -
INSTALLATION) for the procedures.
(6) Reconnect the battery negative cable.
Fig. 19 Instrument Panel Speaker Remove/Install
1 - INSTRUMENT PANEL WIRE HARNESS
2 - INSTRUMENT PANEL SPEAKER
3 - SCREW (2)
Fig. 20 Front Door Speaker Remove/Install
1 - PLASTIC NUT (4)
2 - FRONT DOOR
3 - FRONT DOOR SPEAKER
4 - FRONT DOOR WIRE HARNESS
5 - SCREW (4)
WJAUDIO 8A - 25
SPEAKER (Continued)

The chime warning system provides an audible
indication to the vehicle operator under the following
conditions:
²Fasten Seat Belt Warning- The Body Control
Module (BCM) chime tone generator will generate
repetitive chimes to announce that an input from the
seat belt switch indicates the driver side front seat
belt is not fastened. Unless the driver side front seat
belt is fastened, the chimes will continue to sound for
a duration of about six seconds each time the ignition
switch is turned to the On position or until the driver
side front seat belt is fastened.
²Head/Park Lights-On Warning- The BCM
chime tone generator will generate repetitive chimes
at a fast rate to announce that a Programmable
Communications Interface (PCI) data bus driver door
ajar message, along with hard wired inputs from the
headlamp switch indicate that the exterior lamps are
turned On with the driver side front door opened.
The chime will continue to sound until the exterior
lamps are turned Off, the driver side front door is
closed, or the ignition switch is turned to the On
position.
²Key-In-Ignition Warning- The BCM chime
tone generator will generate repetitive chimes at a
fast rate to announce that a PCI data bus driver door
ajar message received from the Driver Door Module
(DDM), along with hard wired inputs from the key-
in-ignition warning switch indicate that the key is in
the ignition cylinder with the driver side front door
opened and the ignition switch in the Off position.
The chime will continue to sound until the key is
removed from the ignition lock cylinder, the driver
side front door is closed, or the ignition switch is
turned to the On position.
²Overspeed Warning- The BCM chime tone
generator will generate repetitive chimes at a slowrate to announce that a PCI data bus vehicle speed
message received from the Powertrain Control Mod-
ule (PCM) indicates that the vehicle speed is above
120 kilometers-per-hour (75 miles-per-hour). The
chimes will continue to sound until the vehicle speed
is below 120 kilometers-per-hour (75 miles-per-hour).
This feature is only enabled on a BCM that has been
programmed with a Middle East Gulf Coast Country
(GCC) country code.
²Tactile Beep Support- The BCM chime tone
generator will generate a single beep each time a
PCI data bus tactile beep request message is received
from the Electronic Vehicle Information Center
(EVIC) or the Sentry Key Immobilizer Module
(SKIM). This beep provides an audible confirmation
that an EVIC button was completely depressed, or
that the optional Sentry Key Immobilizer System
(SKIS) is in the ªCustomer Learnº mode.
²Warning Beep Support- The BCM chime tone
generator will generate a short series of beeps each
time a PCI data bus warning beep request message
is received from the EVIC or the Electro-Mechanical
Instrument Cluster (EMIC). These beeps provide an
audible alert to the vehicle operator, of certain visual
warning indications displayed by the EVIC and/or
the EMIC.
The BCM provides chime service for all available
features in the chime warning system. The BCM
relies upon message inputs received from other mod-
ules over the PCI data bus network to provide chime
service for all of the remaining chime warning sys-
tem features.
The internal programming of the BCM determines
the priority of each chime tone request input that is
received, as well as the rate and duration of each
chime tone that is to be generated.
8B - 2 CHIME/BUZZERWJ
CHIME WARNING SYSTEM (Continued)

DIAGNOSIS AND TESTING - CHIME WARNING
SYSTEM
Refer to the appropriate wiring information. Con-
ventional diagnostic methods may not prove conclu-
sive in the diagnosis of the instrument cluster or the
Programmable Communications Interface (PCI) data
bus network. The most reliable, efficient and accu-
rate means to diagnose the BCM and the PCI data
bus network inputs for the chime warning system
requires the use of a DRBIIItscan tool and the
appropriate diagnostic information.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFOREATTEMPTING 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.
CHIME WARNING SYSTEM DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
NO SEAT BELT WARNING
CHIME WITH SEAT BELT
UNBUCKLED, BUT OTHER
CHIME FEATURES OK1. Seat belt switch ground
circuit open.1. Check for continuity between the ground circuit
of the wire harness connector for the seat belt
switch and a good ground. Repair the ground
circuit, if required.
2. Seat belt switch sense
circuit open.2. Check for continuity between the seat belt
switch sense circuit of the wire harness connector
for the seat belt switch and the body wire harness
junction block connector. Repair the seat belt
switch sense circuit, if required.
3. Faulty seat belt switch. 3. Check for continuity between the ground circuit
and the seat belt switch sense circuit of the seat
belt switch pigtail wire connector. There should be
continuity with the seat belt unbuckled. Replace
the faulty seat belt, if required.
SEAT BELT WARNING
CHIME WITH SEAT BELT
BUCKLED1. Seat belt switch sense
circuit shorted.1. With the wire harness connector for the seat
belt switch and the body wire harness junction
block connector disconnected, there should be no
continuity between the seat belt switch sense
circuit and a good ground. Repair the seat belt
switch sense circuit, if required.
2. Faulty seat belt switch. 2. Check for continuity between the ground circuit
and the seat belt switch sense circuit of the seat
belt switch pigtail wire connector. There should be
no continuity with the seat belt buckled. Replace
the faulty seat belt, if required.
WJCHIME/BUZZER 8B - 3
CHIME WARNING SYSTEM (Continued)