airbag JEEP LIBERTY 2002 KJ / 1.G Workshop Manual

VEHICLE IDENTIFICATION NUMBER DECODING CHART
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of Origin 1 = United States
2 Make J = Jeep
3 Vehicle Type 4 = MPV W/O Side Airbags.
8 = MPV With Side Airbags.
4 Gross Vehicle Weight Rating F = 4001 - 5000 lbs.
G = 5001 - 6000 lbs.
5 Vehicle Line K = Liberty 4X2 (LHD)
L = Liberty 4X4 (LHD)
M = Cherokee 4X4 (RHD)
6 Series 3 = Liberty Renegade
4 = Liberty Sport/Cherokee Sport
5 = Liberty Limited/Cherokee Limited
7 Body Style 8 = Sport Utility - 4 Door
8 Engine K = 3.7L 6 cyl MPI Gasoline
1 = 2.4L 4 cyl MPI Gasoline
7 = 2.5L 4 cyl Diesel
9 Check Digit 0 through 9 or X
10 Model Year 2=2002
11 Assembly Plant W = Toledo North Assembly Plant
12 thru 17 Vehicle Build Sequence
VEHICLE SAFETY
CERTIFICATION LABEL
DESCRIPTION
A vehicle safety certification label (Fig. 6) is
attached to every DaimlerChrysler Corporation vehi-
cle. The label certifies that the vehicle conforms to all
applicable Federal Motor Vehicle Safety Standards.
The label also lists:
²Month and year of vehicle manufacture.
²Gross Vehicle Weight Rating (GVWR). The gross
front and rear axle weight ratings (GAWR's) arebased on a minimum rim size and maximum cold tire
inflation pressure.
²Vehicle Identification Number (VIN).
²Type of vehicle.
²Bar code.
²Month, Day and Hour (MDH) of final assembly.
²Paint and Trim codes.
²Country of origin.
The label is located above the door hinge on the
driver-side A-pillar.
Fig. 6 Vehicle Safety Certification LabelÐTypical
KJINTRODUCTION 9
VEHICLE IDENTIFICATION NUMBER (Continued)

lating (AM) and Frequency Modulating (FM) com-
mercial frequency ranges.
The audio system components operate on battery
current received through a fuse in the Junction Block
(JB) on a fused ignition switch output (run-acc) cir-
cuit so that the system will only operate when the
ignition switch is in the Run or Accessory positions.
On vehicles that are equipped with the optional
remote radio switches, the Body Control Module
(BCM) receives hard wired resistor multiplexed
inputs from the remote radio switches. The program-
ming in the BCM allows it to process those inputs
and send the proper messages to the radio receiver
over the Programmable Communication Interface
(PCI) bus network to control the radio volume up or
down, station seek up or down, preset station
advance, and mode advance functions.
Refer to the owner's manual for more information
on the features, use and operation of each of the
available audio systems.
DIAGNOSIS AND TESTING - AUDIO
Any diagnosis of the Audio system should
begin with the use of the DRB diagnostic tool.For information on the use of the DRB, 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.
AUDIO SYSTEM DIAGNOSIS TABLE
CONDITION POSSIBLE CAUSES CORRECTION
NO AUDIO 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD)
fuse in Junction Block (JB). Replace fuses, if
required.
2. Radio connector faulty. 2. Check for loose or corroded radio connector.
Repair, if required.
3. Wiring faulty. 3. Check for shorted or open wires. Repair wiring,
if required.
4. Radio ground faulty. 4. Check for continuity between radio chassis and
a known good ground. There should be
continuity. Repair ground, if required.
5. Radio faulty. 5. Refer to appropriate Diagnostic Service
Manual.
6. Speakers faulty. 6. Replace speaker as necessary.
NO RADIO DISPLAY 1. Fuse faulty. 1. Check radio fuse and Ignition-Off Draw (IOD)
fuse in Junction Block (JB). Replace fuses, if
required.
2. Radio connector faulty. 2. Check for loose or corroded radio connector.
Repair, if required.
3. Wiring faulty. 3. Check for battery voltage at radio connector.
Repair wiring, if required.
4. Radio ground faulty. 4. Check for continuity between radio chassis and
a known good ground. There should be
continuity. Repair ground, if required.
8A - 2 AUDIOKJ
AUDIO (Continued)

OPERATION
The antenna body and cable connects the antenna
mast to the radio. The radio antenna is an electro-
magnetic circuit component used to capture radio fre-
quency signals that are broadcast by local
commercial radio stations in both the Amplitude
Modulating (AM) and Frequency Modulating (FM)
frequency ranges. These electromagnetic radio fre-
quency signals induce small electrical modulations
into the antenna as they move past the mast. The
antenna body transfers the weak electromagnetic
radio waves induced into the rigid antenna mast into
the center conductor of the flexible primary antenna
coaxial cable. The braided outer shield of the
antenna coaxial cable is grounded through both the
antenna body and the radio chassis, effectively
shielding the radio waves as they are conducted to
the radio. The radio then tunes and amplifies the
weak radio signals into stronger electrical signals in
order to operate the audio system speakers.
DIAGNOSIS AND TESTING - ANTENNA BODY
AND CABLE
The following four tests are used to diagnose the
antenna with an ohmmeter:
²Test 1- Mast to ground test
²Test 2- Tip-of-mast to tip-of-conductor test
²Test 3- Body ground to battery ground test
²Test 4- Body ground to antenna coaxial cable
shield test.
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.
The ohmmeter test lead connections for each test
are shown in the illustration (Fig. 2).
NOTE: This model has a two-piece antenna coaxial
cable. Tests 2 and 4 must be conducted in two
steps to isolate an antenna cable problem. First,
test the primary antenna cable (integral to the
antenna body and cable) from the coaxial cable
connector behind the right side kick panel to the
antenna body. Then, test the secondary antennacable (instrument panel antenna cable) from the
coaxial cable connector behind the right side kick
panel to the coaxial cable connector at the radio.
TEST 1
Test 1 determines if the antenna mast is insulated
from ground. Proceed as follows:
(1) Disconnect and isolate the antenna coaxial
cable connector behind the right side kick panel.
(2) Touch one ohmmeter test lead to the tip of the
antenna mast. Touch the other test lead to known
ground. Check the ohmmeter reading for continuity.
(3) There should be no continuity. If OK, go to Test
2. If not OK, replace the faulty antenna body and
cable.
TEST 2
Test 2 checks the antenna conductor components
for an open circuit. This test should be performed
first on the entire antenna circuit, from the antenna
mast to the center conductor of the coaxial cable con-
nector at the radio. If an open circuit is detected,
each of the three antenna conductor components
(antenna mast, antenna body and cable, instrument
panel antenna cable) should be isolated and tested
individually to locate the exact component that is the
source of the open circuit. To begin this test, proceed
as follows:
(1) Disconnect the instrument panel antenna cable
coaxial connector from the back of the radio.
(2) Touch one ohmmeter test lead to the tip of the
antenna mast. Touch the other test lead to the center
conductor pin of the instrument panel antenna cable
coaxial connector for the radio. Check the ohmmeter
reading for continuity.
Fig. 2 Antenna Tests - Typical
KJAUDIO 8A - 5
ANTENNA BODY & CABLE (Continued)

(8) Install antenna mast.
(9) Tighten fender mounting bolts near door hinge
area.
(10) Install and tighten the upper fender mounting
bolts (Refer to 23 - BODY/EXTERIOR/FRONT
FENDER - INSTALLATION).
(11) Connect the battery negative cable.
CD CHANGER
DESCRIPTION
A factory-installed Compact Disc (CD) changer fea-
turing a six-CD magazine is an available option on
this model. The CD changer is mounted in the cargo
area of the passenger compartment on the right rear
quarter panel.
The controls on the radio receiver operate the CD
changer through messages sent over the Programma-
ble Communications Interface (PCI) data bus net-
work. For diagnosis of the messaging functions of the
radio receiver and the CD changer, or of the PCI data
bus, a DRB scan tool and the proper Diagnostic Pro-
cedures manual are required.
The CD changer can only be serviced by an autho-
rized radio repair station. See the latest Warranty
Policies and Procedures manual for a current listing
of authorized radio repair stations. Refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector 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.
OPERATION
The CD changer will only operate when the igni-
tion switch is in the On or Accessory positions, and
the radio is turned on. The six-CD magazine may be
ejected with the ignition in the Off position. For more
information on the features, loading procedures and
radio control functions for the operation of the CD
changer, refer to the owner's manual.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the right rear quarter trim panel.
(Refer to 23 - BODY/INTERIOR/QUARTER TRIM
PANEL - REMOVAL).
(3) Disconnect the electrical wire harness connec-
tor (Fig. 4).
(4) Remove the mounting nuts.
(5) Remove the CD Changer from the vehicle.
INSTALLATION
(1) Install the CD Changer to the vehicle.
(2) Install the mounting nuts. Tighten to 11.8 N´m
(104 in. lbs.).
(3) Connect the wire harness connector.
(4) Install the right rear quarter trim panel (Refer
to 23 - BODY/INTERIOR/QUARTER TRIM PANEL -
INSTALLATION).
(5) Connect the battery negative cable.
INSTRUMENT PANEL
ANTENNA CABLE
REMOVAL
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.
Fig. 4 CD CHANGER
1 - CD CHANGER
2 - WIRE HARNESS CONNECTOR
3 - MOUNTING NUT
KJAUDIO 8A - 7
ANTENNA BODY & CABLE (Continued)

(2) Remove the instrument panel (Refer to 23 -
BODY/INSTRUMENT PANEL/INSTRUMENT
PANEL ASSEMBLY - REMOVAL).
(3) Disconnect the antenna cable from radio by
pulling the locking antenna connector away from
radio (Fig. 5).
(4) Disengage each of the retainers that secure the
cable to the instrument panel (Fig. 6).
(5) Remove the cable 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 instrument panel antenna cable
onto the instrument panel.
(2) Engage each of the retainers that secure the
cable to the back side of the instrument panel.
(3) Connect cable to radio.
(4) Install instrument panel (Refer to 23 - BODY/
INSTRUMENT PANEL/INSTRUMENT PANEL
ASSEMBLY - INSTALLATION).
(5) Connect the battery negative cable.
RADIO
DESCRIPTION
Available factory-installed radio receivers for this
model include an AM/FM/cassette with CD changer
control feature (RBB sales code), an AM/FM/cassette/
CD/graphic equalizer with CD changer control fea-
ture (RBP sales code), or an AM/FM/CD/ with CD
changer control feature (RBK sales code). All factory-
installed radio receivers can communicate on the
Programmable Communications Interface (PCI) data
bus network. All factory-installed receivers are stereo
Electronically Tuned Radios (ETR) and include an
electronic digital clock function.
These radio receivers can only be serviced by an
authorized radio repair station. See the latest War-
ranty Policies and Procedures manual for a current
listing of authorized radio repair stations.
OPERATION
The radio receiver operates on ignition switched
battery current that is available only when the igni-
tion switch is in the On or Accessory positions. The
electronic digital clock function of the radio operates
on fused battery current supplied through the IOD
fuse, regardless of the ignition switch position.
For more information on the features, setting pro-
cedures, and control functions for each of the avail-
able factory-installed radio receivers, refer to the
owner's manual. For complete circuit diagrams, refer
to the appropriate wiring information. The wiring
information includes wiring diagrams, proper wire
and connector repair procedures, details of wire har-
Fig. 5 ANTENNA TO RADIO
1 - RADIO
2 - LOCKING ANTENNA CONNECTOR
3 - INSTRUMENT PANEL ANTENNA CABLE
Fig. 6 INSTRUMENT PANEL ANTENNA CABLE
1 - INSTRUMENT PANEL ANTENNA CABLE
2 - ANTENNA BODY AND CABLE
8A - 8 AUDIOKJ
INSTRUMENT PANEL ANTENNA CABLE (Continued)

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 Mod-
ule (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 Programmable
Communication 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, refer
to the owner's manual.
DIAGNOSIS AND TESTING - REMOTE
SWITCHES
Any diagnosis of the Audio system should
begin with the use of the DRB diagnostic tool.
For information on the use of the DRB, 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. 14)
from the steering wheel (Refer to 8 - ELECTRICAL/
AUDIO/REMOTE SWITCHES - REMOVAL).(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.
REMOTE RADIO SWITCH TEST TABLE
Switch Switch Position Resistance
Right
(White)Volume Up 1.210 Kilohms   1%
Right
(White)Volume Down 3.010 Kilohms   1%
Right
(White)Mode Advance 0.0511 Kilohms   1%
Left
(Black)Seek Up 0.261 Kilohms   1%
Left
(Black)Seek Down 0.681 Kilohms   1%
Left
(Black)Pre-Set Station
Advance0.162 Kilohms   1%
(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
Fig. 14 Remote Radio Switches
1 - BLACK (LEFT) SWITCH
2 - WHITE (RIGHT) SWITCH
8A - 12 AUDIOKJ
REMOTE SWITCHES (Continued)

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: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 ISOLATE THE BAT-
TERY NEGATIVE (GROUND) CABLE, THEN WAIT
TWO MINUTES FOR THE AIRBAG SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE AIRBAG SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the driver side airbag module from the
vehicle (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - REMOVAL).
(3) Remove the cruise control switches (Fig. 15).
(4) Unplug the wire harness connector from the
remote radio switch(es).
(5)
Depress the tabs on each side of each switch and
push the switch through the rear steering wheel cover.
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 ISOLATE THE BAT-
TERY NEGATIVE (GROUND) CABLE, THEN WAIT
TWO MINUTES FOR THE AIRBAG SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE AIRBAG SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT AND POSSIBLE PERSONAL INJURY.
(1) Install remote radio switch to the steering
wheel.(2) Connect the wire harness to the remote radio
switch.
(3) Install the cruise control switches.
(4) Install the driver side airbag module (Refer to
8 - ELECTRICAL/RESTRAINTS/DRIVER AIRBAG -
INSTALLATION).
(5) Connect 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 speaker is installed on each end of the
instrument panel top pad. One 16.5 centimeter (6.5
inch) full-range speaker is located in each front door.
There is also one full-range 16.5 centimeter (6.5 inch)
diameter full-range speaker located in each rear door.
PREMIUM
The optional premium speaker system features six
Premium model speakers in six locations. Each of the
standard speakers is replaced with Premium model
speakers. One 6.4 centimeter (2.50 inch) diameter
Fig. 15 REMOTE SWITCH
1 - STEERING WHEEL
2 - SPEED CONTROL SWITCH
3 - SCREW
4 - DRIVER SIDE AIRBAG MODULE
5 - REMOTE RADIO SWITCH
6 - REAR TRIM COVER
KJAUDIO 8A - 13
REMOTE SWITCHES (Continued)

A chime warning system is standard factory-in-
stalled equipment on this model. The chime warning
system uses a single chime tone generator that is sol-
dered onto the electronic circuit board that is integral
to the ElectroMechanical Instrument Cluster (EMIC)
to provide an audible indication of various vehicle
conditions that may require the attention of the vehi-
cle operator or occupants (Fig. 1). The microproces-
sor-based EMIC utilizes electronic chime request
messages received from other electronic modules in
the vehicle over the Programmable Communications
Interface (PCI) data bus network along with hard
wired inputs to the cluster microprocessor to monitor
many sensors and switches throughout the vehicle.
In response to those inputs, the integrated circuitry
and internal programming of the EMIC allow it to
control audible outputs that are produced through its
on-board chime tone generator.
The EMIC circuitry and its chime tone generator
are capable of producing each of the four following
audible outputs:
²Fixed Duration Beep- A short, sharp, single
tactile ªbeep-likeº tone that is about 150 milliseconds
in duration.
²Single Chime Tone- A single ªbong-likeº chime
tone.
²Slow Rate Repetitive Chime- Repeated
chime tones that are issued at a slow rate of about
50 ªbong-likeº tones per minute.
²Fast Rate Repetitive Chime- Repeated chime
tones that are issued at a fast rate of about 180
ªbong-likeº tones per minute.
Hard wired circuitry connects the EMIC and the
various chime warning system switch and sensor
inputs to their electronic modules and to each other
through the electrical system of the vehicle. These
hard wired circuits are integral to numerous wire
harnesses, which are routed throughout the vehicle
and retained by many different methods. These cir-
cuits may be connected to each other, to the vehicle
electrical system and to the chime warning system
through the use of a combination of soldered splices,
splice block connectors, and many different types of
wire harness terminal connectors and insulators.
Refer to the appropriate wiring information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, further details
on wire harness routing and retention, as well as
pin-out and location views for the various wire har-
ness connectors, splices and grounds.
The EMIC chime warning system circuitry and
integral chime tone generator cannot be adjusted or
repaired. If the EMIC or the chime tone generator
are damaged or faulty, the EMIC unit must be
replaced.OPERATION
The chime warning system is designed to provide
an audible output as an indication of various condi-
tions that may require the attention or awareness of
the vehicle operator or occupants. The chime warning
system components operate on battery current
received through a fused B(+) fuse in the Junction
Block (JB) on a non-switched fused B(+) circuit so
that the system may operate regardless of the igni-
tion switch position. However, the chime warning
system also monitors the ignition switch position so
that some chime features will only occur with igni-
tion switch in the On position, while others occur
regardless of the ignition switch position.
The chime warning system provides an audible
indication to the vehicle operator or occupants under
the following conditions:
²Airbag Indicator Warning- The ElectroMe-
chanical Instrument Cluster (EMIC) chime tone gen-
erator will generate one, short, ªbong-likeº chime
tone when the ignition switch is in the On position,
and an electronic message is received over the Pro-
grammable Communications Interface (PCI) data bus
from the Airbag Control Module (ACM) requesting
ªAirbagº indicator illumination. This warning will
only occur following completion of the ªAirbagº indi-
cator bulb test, and will only occur once during an
ignition cycle. The ACM uses internal programming,
hard wired inputs from the front Supplemental
Restraint System (SRS) components and, on vehicles
so equipped, electronic messages received over the
PCI data bus from each Side Impact Airbag Control
Module (SIACM) to determine the proper ªAirbagº
indicator messages to send to the EMIC.
²Anti-Lock Brake Indicator Warning- The
EMIC chime tone generator will generate one, short,
ªbong-likeº chime tone when the ignition switch is in
the On position, and an electronic message is
received over the PCI data bus from the Controller
Anti-lock Brake (CAB) requesting ªAntilock Brake
System (ABS)º indicator illumination. This warning
will only occur following completion of the ªABSº
indicator bulb test, and will only occur once during
an ignition cycle. The CAB uses internal program-
ming, hard wired inputs from the Antilock Brake
System (ABS) components, and electronic messages
received over the PCI data bus from the Powertrain
Control Module (PCM) to determine the proper
ªABSº indicator messages to send to the EMIC.
²Compass Mini-Trip Computer Reset- The
EMIC chime tone generator will generate one, short,
fixed duration ªbeep-likeº chime tone when the igni-
tion switch is in the On position, and an electronic
message is received over the PCI data bus from the
optional Compass Mini-Trip Computer (CMTC)
requesting that the CMTC elapsed time, average fuel
8B - 2 CHIME/BUZZERKJ
CHIME WARNING SYSTEM (Continued)

ever occurs first. The overspeed warning feature is
only enabled on a BCM that has been programmed
with a Middle East Gulf Coast Country (GCC) coun-
try code.
²No Airbag Indicator Message Warning- The
EMIC chime tone generator will generate one, short,
ªbong-likeº chime tone and turn on the ªAirbagº indi-
cator when the ignition switch is in the On position,
and a PCI data bus ªAirbagº indicator on or off mes-
sage is not received from the ACM for six consecutive
seconds.
²No Antilock Brake Indicator Message Warn-
ing- The EMIC chime tone generator will generate
one, short, ªbong-likeº chime tone and turn on the
ªABSº indicator when the ignition switch is in the On
position, and a PCI data bus ªABSº indicator on or
off message is not received from the CAB for six con-
secutive seconds.
²No Fuel Level Message Warning- The EMIC
chime tone generator will generate one, short, ªbong-
likeº chime tone and turn on the ªLow Fuelº indica-
tor when the ignition switch is in the On position,
and a PCI data bus fuel level message is not received
from the PCM for twelve consecutive seconds.
²Remote Keyless Entry Transmitter Pro-
gramming- On vehicles so equipped, the EMIC
chime tone generator will generate a single ªbong-
likeº chime tone when an electronic message is
received over the PCI data bus from the BCM indi-
cating that a Remote Keyless Entry (RKE) transmit-
ter has been successfully programmed by the
customer into the RKE module memory.
²Sentry Key Immobilizer System Transpon-
der Programming- On vehicles so equipped, the
EMIC chime tone generator will generate a single
ªbong-likeº chime tone when an electronic message is
received over PCI data bus message from the Sentry
Key Immobilizer Module (SKIM) indicating that the
Sentry Key Immobilizer System (SKIS) has been
placed in the ªCustomer Learnº programming mode,
and again each time a new SKIS transponder has
been successfully programmed by the customer.
²Turn Signal Cancel Warning- The EMIC
chime tone generator will generate repetitive ªbong-
likeº chime tones at a slow rate when the vehicle is
driven for a distance of about 3.2 kilometers (about
two miles) with a turn signal indicator flashing. The
EMIC uses an electronic message received over the
PCI data bus from the PCM, and a hard wired input
from the turn signal switch circuitry of the multi-
function switch to determine when to sound the turn
signal cancel warning. The PCM uses internal pro-
gramming and distance pulse information received
over a hard wired vehicle speed pulse input from the
BCM to determine the proper vehicle speed messages
to send to the EMIC. The BCM uses an internallyprogrammed electronic pinion factor and a hard
wired input from the rear wheel speed sensor to cal-
culate the proper distance pulse information to send
to the PCM. The electronic pinion factor represents
the proper tire size and axle ratio information for the
vehicle. These chimes will continue to sound until
the turn signal is turned Off, until the hazard warn-
ing system is turned On, or until the ignition switch
is turned to the Off position, whichever occurs first.
²Water-In-Fuel Warning- On vehicles equipped
with a diesel engine, each time the ignition switch is
turned to the On position, the EMIC chime tone gen-
erator will generate a single ªbong-likeº chime tone
the first time an electronic message is received over
the PCI data bus from the PCM requesting ªWater-
in-Fuelº indicator illumination. The PCM uses inter-
nal programming and a hard wired input from the
water-in-fuel sensor to determine the proper water-
in-fuel messages to send to the EMIC. This warning
will only occur once during an ignition cycle.
The EMIC provides chime service for all available
features in the chime warning system. The EMIC
relies upon its internal programming and hard wired
inputs from the turn signal (multi-function) switch,
the washer fluid level switch, and the engine coolant
level sensor (diesel engine only) to provide chime ser-
vice for the turn signal cancel warning, the low
washer fluid warning, and the low coolant warning
respectively. The EMIC relies upon electronic mes-
sage inputs received from other electronic modules
over the PCI data bus network to provide chime ser-
vice for all of the remaining chime warning system
features. Upon receiving the proper inputs, the EMIC
activates the integral chime tone generator to pro-
vide the audible chime warning to the vehicle opera-
tor. The internal programming of the EMIC
determines the priority of each chime request input
that is received, as well as the rate and duration of
each chime tone that is to be generated. See the own-
er's manual in the vehicle glove box for more infor-
mation on the features provided by the chime
warning system.
The hard wired chime warning system inputs to
the EMIC, as well as other hard wired circuits for
this system may be diagnosed and tested using con-
ventional diagnostic tools and procedures. However,
conventional diagnostic methods may not prove con-
clusive in the diagnosis of the EMIC, the PCI data
bus network, or the electronic message inputs used
by the EMIC to provide chime warning system ser-
vice. The most reliable, efficient, and accurate means
to diagnose the EMIC, the PCI data bus network,
and the electronic message inputs for the chime
warning system requires the use of a DRBIIItscan
tool. Refer to the appropriate diagnostic information.
KJCHIME/BUZZER 8B - 5
CHIME WARNING SYSTEM (Continued)

DIAGNOSIS AND TESTING - CHIME WARNING
SYSTEM
The hard wired chime warning system inputs to
the EMIC, as well as other hard wired circuits for
this system may be diagnosed and tested using con-
ventional diagnostic tools and procedures. However,
conventional diagnostic methods may not prove con-
clusive in the diagnosis of the EMIC, the PCI data
bus network, or the electronic message inputs used
by the EMIC to provide chime warning system ser-
vice. The most reliable, efficient, and accurate means
to diagnose the EMIC, the PCI data bus network,
and the electronic message inputs for the chime
warning system requires the use of a DRBIIItscan
tool. Refer to the appropriate diagnostic information.
The hard wired chime warning system inputs to
the ElectroMechanical Instrument Cluster (EMIC),
as well as other hard wired circuits for this system
may be diagnosed and tested using conventional
diagnostic tools and procedures. However, conven-
tional diagnostic methods may not prove conclusive
in the diagnosis of the EMIC, the Programmable
Communications Interface (PCI) data bus network, or
the electronic message inputs used by the EMIC to
provide chime warning system service. The most reli-able, efficient, and accurate means to diagnose the
EMIC, the PCI data bus network, and the electronic
message inputs for the chime warning system
requires the use of a DRBIIItscan tool. Refer to the
appropriate diagnostic information.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
8B - 6 CHIME/BUZZERKJ
CHIME WARNING SYSTEM (Continued)