CHIME/BUZZER WARNING SYSTEMS
TABLE OF CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION ..........................1
CHIME WARNING SYSTEM .................1
DESCRIPTION AND OPERATION
CENTRAL TIMER MODULE .................1
INSTRUMENT CLUSTER....................2
DRIVER DOOR AJAR SWITCH...............2
KEY-IN IGNITION SWITCH ..................2
HEADLAMP SWITCH ......................2
DRIVER SEAT BELT SWITCH ................2
DIAGNOSIS AND TESTING
CENTRAL TIMER MODULE .................3
DRIVER DOOR AJAR SWITCH...............3
KEY-IN IGNITION SWITCH ..................4
HEADLAMP SWITCH ......................4
DRIVER SEAT BELT SWITCH ................5
INSTRUMENT CLUSTER....................5
REMOVAL AND INSTALLATION
CHIME WARNING SYSTEM SWITCHES........5
GENERAL INFORMATION
INTRODUCTION
A chime warning system is standard factory-in-
stalled equipment on this model. Refer to 8W-44 -
Interior Lighting or 8W-45 - Central Timer Module in
Group 8W - Wiring Diagrams for complete circuit
descriptions and diagrams.
CHIME WARNING SYSTEM
The chime warning system provides an audible
warning to the driver under the following conditions:
• ABS lamp illumination
• Airbag indicator lamp illumination
• Check gauges lamp illumination
• Door is ajar with vehicle in motion
• Driver side seat belt is not fastened with the
ignition switch in the On position
• 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
• Low washer fluid warning lamp illumination
• Transmission oil temperature warning lamp illu-
mination.
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
CENTRAL TIMER MODULE
Two versions of the Central Timer Module (CTM)
are available on this vehicle, a base version and a
high-line version. The base version of the CTM is
used on base models of the vehicle. The base version
of the CTM combines the functions of a chime/buzzer
module, an intermittent wipe module, and an illumi-
nated entry module into a single unit. The base CTM
also uses inputs from the door ajar switches, the
headlamp switch and the key-in ignition switch to
control the output to the dome lamp circuits, which
allows the base CTM to provide load shedding to help
protect the battery from becoming discharged.
The high-line version of the CTM is used on high-
line vehicles. The high-line CTM provides all of the
functions of the base version CTM, but also is used to
control and integrate many of the additional elec-
tronic functions and features included on the high-
line models. The high-line version of the CTM
contains a central processing unit and interfaces with
other modules in the vehicle on the Chrysler Colli-
sion Detection (CCD) data bus network.
The CCD data bus network allows the sharing of
sensor information. This helps to reduce wire har-
ness complexity, reduce internal controller hardware,
and reduce component sensor current loads. At the
same time, this system provides increased reliability,
enhanced diagnostics, and allows the addition of
many new feature capabilities.
One of the functions and features that both ver-
sions of the CTM support is the chime warning sys-
tem. The CTM contains a chime tone generator to
perform the functions of the chime warning module.
The CTM uses hard-wired switch inputs, internal
DN CHIME/BUZZER WARNING SYSTEMS 8U - 1
To Next Page