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XJ CHIME/BUZZER WARNING SYSTEMS 8U - 1
CHIME/BUZZER WARNING SYSTEMS
CONTENTS
page page
GENERAL INFORMATION
CHIME WARNING SYSTEM ................ 1
INTRODUCTION ......................... 1
DESCRIPTION AND OPERATION
DRIVER DOOR JAMB SWITCH ............. 2
DRIVER SEAT BELT SWITCH ............... 2
HEADLAMP SWITCH ..................... 2
INSTRUMENT CLUSTER ................... 1
KEY-IN IGNITION SWITCH ................. 2
GENERAL INFORMATION
INTRODUCTION
This group covers the chime warning system,
which is standard factory-installed equipment on this
model. Refer to 8W-40 Instrument Cluster or 8W-44 Interior Lighting in Group 8W - Wiring Diagrams for
complete circuit descriptions and diagrams.
NOTE: This group covers both Left-Hand Drive
(LHD) and Right-Hand Drive (RHD) versions of this
model. Whenever required and feasible, the RHD
versions of affected vehicle components have been
constructed as mirror-image of the LHD versions.
While most of the illustrations used in this group
represent only the LHD version, the diagnostic and
service procedures outlined can generally be
applied to either version. Exceptions to this rule
have been clearly identified as LHD or RHD, if a
special illustration or procedure is required.
CHIME WARNING SYSTEM
The chime warning system provides an audible
warning to the driver under the following conditions:
• Driver side seat belt is not fastened (chimes will
sound after the ignition switch is turned to the On
position for the duration of the seat belt reminder
lamp illumination or until the driver side seat belt is
buckled, whichever occurs first)
• Engine coolant temperature is high
• Head or park lamps are turned on with the igni-
tion switch Off and the driver side front door open
• Key is in the ignition switch with the ignition
switch Off and the driver side front door open
• Low fuel warning lamp illumination - less than
about one-eighth tank of fuel remaining
• Overhead console trip computer is reset.
DIAGNOSIS AND TESTING
DRIVER DOOR JAMB SWITCH ............. 2
DRIVER SEAT BELT SWITCH ............... 2
HEADLAMP SWITCH ..................... 3
INSTRUMENT CLUSTER ................... 3
KEY-IN IGNITION SWITCH ................. 3
REMOVAL AND INSTALLATION
CHIME WARNING SYSTEM SWITCHES ....... 4
• The optional Sentry Key Immobilizer System
(SKIS) is in the “customer programming” mode.
Following are general descriptions of the major
components in the chime warning system. Refer to
the owner’s manual in the vehicle glove box for more
information on the features, use and operation of the
chime warning system.
DESCRIPTION AND OPERATION
INSTRUMENT CLUSTER
The instrument cluster is an electromechanical
unit that contains integrated circuitry and internal
programming to perform a variety of functions. The
instrument cluster circuitry monitors hard-wired
switch inputs, as well as message inputs received
from other vehicle electronic modules on the Chrysler
Collision Detection (CCD) data bus network.
The instrument cluster uses these many inputs
along with its internal programming and an integral
chime tone generator to perform the functions of the
chime warning module on this model. The instrument cluster circuitry also has a self-diagnostic capability. Refer to Group 8E - Instrument Panel Systems
for more information on this feature.
Hard-wired chime warning system inputs to the
instrument cluster include the following:
• Driver door jamb switch
• Driver seat belt switch
• Headlamp switch
• Key-in ignition switch.
The only instrument cluster diagnosis found in this
group consists of confirming the viability of the hardwired chime request inputs to the instrument cluster
circuitry. For diagnosis of the CCD data bus and the
data bus message inputs, a DRB scan tool and the
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8U - 2 CHIME/BUZZER WARNING SYSTEMS XJ
DESCRIPTION AND OPERATION (Continued)
proper Diagnostic Procedures manual are recommended.
Refer to Group 8E - Instrument Panel Systems for
the instrument cluster service procedures. The
instrument cluster chime warning circuitry and
chime tone generator cannot be repaired and, if
faulty or damaged, the instrument cluster assembly
must be replaced.
DRIVER DOOR JAMB SWITCH
The driver door jamb switch is mounted to the
driver side front door hinge pillar. The switch closes
a path to ground for the instrument cluster chime
warning circuitry through the key-in ignition switch
and/or the headlamp switch when the driver door is
opened, and opens the ground path when the driver
door is closed.
The driver door jamb switch cannot be repaired
and, if faulty or damaged, it must be replaced. Refer
to Group 8L - Lamps for the service procedures.
DRIVER SEAT BELT SWITCH
The driver seat belt switch is integral to the driver
seat belt buckle-half assembly. The switch is normally closed, providing a ground path to the instrument panel chime warning circuitry. When the tiphalf of the seat belt is inserted into the seat belt
buckle, the switch opens the ground path.
The driver seat belt switch cannot be repaired and,
if faulty or damaged, the entire driver seat belt buckle-half unit must be replaced. Refer to Group 23 Body for the service procedures.
KEY-IN IGNITION SWITCH
The key-in ignition switch is integral to the ignition switch, which is mounted on the left side of the
steering column, opposite the ignition lock cylinder.
It closes a path to ground for the instrument cluster
chime warning circuitry when the ignition key is
inserted in the ignition lock cylinder and the driver
door jamb switch is closed (driver door is open). The
key-in ignition switch opens the ground path when
the key is removed from the ignition lock cylinder.
The key-in ignition switch cannot be repaired and,
if faulty or damaged, the entire ignition switch must
be replaced. Refer to Group 8D - Ignition Systems for
the service procedures.
HEADLAMP SWITCH
The headlamp switch is located in the instrument
panel, outboard of the steering column. It closes a
path to ground for the instrument cluster chime
warning circuitry when the park or head lamps are
on and the driver door jamb switch is closed (driver
door is open). The headlamp switch opens the ground
path when the headlamp switch is turned off.
The headlamp switch cannot be repaired and, if
faulty or damaged, it must be replaced. Refer to
Group 8E - Instrument Panel Systems for the service
procedures.
DIAGNOSIS AND TESTING
DRIVER DOOR JAMB SWITCH
For circuit descriptions and diagrams, refer to
8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS 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) Rotate the headlamp switch knob counterclockwise to ensure that the dome lamps are not switched
off. Open the driver door and note whether the interior lamps light. They should light. If OK, see the
diagnosis for the Key-In Ignition Switch or the Headlamp Switch in this group. If not OK, go to Step 2.
(2) Disconnect and isolate the battery negative
cable. Unplug the driver door jamb switch from its
wire harness connector. Check for continuity between
the ground circuit cavity of the driver door jamb
switch wire harness connector and a good ground.
There should be continuity. If OK, go to Step 3. If not
OK, repair the circuit to ground as required.
(3) Check for continuity between the door jamb
switch ground circuit terminal and the left front door
jamb switch sense terminal of the door jamb switch.
There should be continuity with the switch plunger
released, and no continuity with the switch plunger
depressed. If not OK, replace the faulty switch.
DRIVER SEAT BELT SWITCH
For circuit descriptions and diagrams, refer to
8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS 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.
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XJ CHIME/BUZZER WARNING SYSTEMS 8U - 3
DIAGNOSIS AND TESTING (Continued)
(1) Disconnect and isolate the battery negative
cable. Unplug the driver seat belt switch wire harness connector on the floor under the driver seat
near the seat belt buckle-half anchor. Check for continuity between the seat belt switch sense circuit and
the ground circuit cavities of the seat belt half of the
driver seat belt switch wire harness connector. There
should be continuity with the seat belt unbuckled,
and no continuity with the seat belt buckled. If OK,
go to Step 2. If not OK, replace the faulty seat belt
buckle-half assembly.
(2) Check for continuity between the ground circuit cavity in the body half of the driver seat belt
switch wire harness connector and a good ground.
There should be continuity. If OK, see the Instrument Cluster diagnosis in this group. If not OK,
repair the circuit to ground as required.
KEY-IN IGNITION SWITCH
For circuit descriptions and diagrams, refer to
8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS 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. Remove the steering column shrouds. Refer to
Group 8D - Ignition Systems for the procedures.
Unplug the key-in ignition switch wire harness connector from the ignition switch.
(2) Check for continuity between the key-in switch
sense circuit and the left front door jamb switch
sense circuit terminals of the key-in ignition switch.
There should be continuity with the key in the ignition lock cylinder, and no continuity with the key
removed from the ignition lock cylinder. If OK, go to
Step 3. If not OK, replace the faulty ignition switch
assembly.
(3) Check for continuity between the left front door
jamb switch sense circuit cavity of the key-in ignition
switch wire harness connector and a good ground.
There should be continuity with the driver door open,
and no continuity with the driver door closed. If OK,
see the diagnosis for Instrument Cluster in this
group. If not OK, repair the circuit to the driver door
jamb switch as required.
HEADLAMP SWITCH
For circuit descriptions and diagrams, refer to
8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS 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. Remove the headlamp switch from the instrument panel. Refer to Group 8E - Instrument Panel
Systems for the procedures. Unplug the headlamp
switch wire harness connectors. Check for continuity
between the left front door jamb switch sense circuit
cavity of the headlamp switch wire harness connector
and a good ground. There should be continuity with
the driver door closed, and no continuity with the
driver door open. If OK, go to Step 2. If not OK,
repair the circuit to the driver door jamb switch as
required.
(2) Check for continuity between the key-in switch
sense circuit terminal and the left front door jamb
switch sense terminal of the headlamp switch. There
should be no continuity with the switch in the Off
position, and continuity with the switch in the park
or head lamps On position. If OK, see the diagnosis
for the Instrument Cluster in this group. If not OK,
replace the faulty headlamp switch.
INSTRUMENT CLUSTER
Before performing this test, complete the testing of
the hard-wired chime warning system switches as
described in this group. For circuit descriptions and
diagrams, refer to 8W-40 - Instrument Cluster or
8W-44 - Interior Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS 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. Remove the instrument cluster from the
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8U - 4 CHIME/BUZZER WARNING SYSTEMS XJ
DIAGNOSIS AND TESTING (Continued)
instrument panel. Refer to Group 8E - Instrument
Panel Systems for the procedures.
(2) Unplug the headlamp switch and the key-in
ignition switch wire harness connectors. Check for
continuity between the key-in switch sense circuit
cavity of the right instrument cluster wire harness
connector (connector B) and a good ground. There
should be no continuity. If OK, go to Step 3. If not
OK, repair the short circuit as required.
(3) Check for continuity between the key-in switch
sense circuit cavities of the right instrument cluster
wire harness connector (connector B) and the headlamp switch wire harness connector. There should be
continuity. If OK, go to Step 4. If not OK, repair the
open circuit as required.
(4) Unplug the driver seat belt switch wire harness connector. Check for continuity between the seat
belt switch sense circuit cavity of the right instrument cluster wire harness connector (connector B)
and a good ground. There should be no continuity. If
OK, go to Step 5. If not OK, repair the short circuit
as required.
(5) Check for continuity between the seat belt
switch sense circuit cavities of the right instrument
cluster wire harness connector (connector B) and the
driver seat belt switch wire harness connector. There
should be continuity. If OK, test the instrument cluster as described in Group 8E - Instrument Panel Systems. If not OK, repair the open circuit as required.
REMOVAL AND INSTALLATION
CHIME WARNING SYSTEM SWITCHES
Service procedures for the various hard-wired
switches used in the chime warning system can be
found in the proper group as follows:
• Driver door jamb switch - refer to Group 8L -
Lamps
• Driver seat belt switch - refer to Group 23 -
Body
• Headlamp switch - refer to Group 8E - Instru-
ment Panel Systems
• Key-in ignition switch - refer to Group 8D - Igni-
tion Systems.
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