Dodge ram truck 3500 1996 Service Manual page 537

B R CHIME/BUZZER WARNING SYSTEMS 8U - 1
CHIME/BUZZER W A R N I N G S Y S T E M S
C O N T E N T S
page
GENERAL INFORMATION
INTRODUCTION 1
DESCRIPTION AND OPERATION
BUZZER MODULE 1
DRIVER'S DOOR JAMB SWITCH 1
DRIVER'S SEAT BELT SWITCH 2
HEADLAMP SWITCH 1
IGNITION KEY-IN SWITCH 1
DIAGNOSIS AND TESTING
BUZZER MODULE 2
page
DRIVER'S DOOR JAMB SWITCH 2
DRIVER'S SEAT BELT SWITCH 3
HEADLAMP SWITCH 3
IGNITION KEY-IN SWITCH 2
REMOVAL AND INSTALLATION
BUZZER MODULE 3
CHIME/BUZZER WARNING SYSTEM
SWITCHES 4
G E N E R A L I N F O R M A T I O N
INTRODUCTION
This group covers the buzzer warning system,
which is standard factory-installed equipment on this
model. The system provides an audible warning to
the driver when It monitors the following conditions:
• The key is in the ignition switch with the driv­
er's door open.
• The head or park lamps are on with the driver's
door open.
• The driver's seat belt is not buckled with the
ignition switch in the On position.
Following are general descriptions of the major
components in the buzzer warning system. Refer to
8W-44 - Interior Lighting in Group 8W - Wiring Dia­
grams for complete circuit descriptions and diagrams.
D E S C R I P T I O N A N D O P E R A T I O N
BUZZER MODULE
The buzzer module receives battery voltage at all
times from a fuse i n * the fuseblock module. I t also
receives a second battery feed through a fuse in the
fuseblock module when the ignition switch is in the
On or Start position.
Other inputs to the module include the driver's
door jamb switch, the driver's seat belt switch, the
ignition key-in switch, and the headlamp switch. The
only output of the module is a timed four to eight
second feed to the seat belt reminder lamp on the
instrument panel. The timer function begins after
the ignition switch is turned to the On position.
The buzzer module cannot be repaired. I f faulty, i t
must be replaced.
DRIVER'S POOR JAMB SWITCH
The driver's door jamb switch is mounted to the
driver's door hinge pillar. The switch closes a path to
ground for the buzzer module through the key-in
switch or the headlamp switch when the driver's door
Is opened, and opens when the driver's door is closed.
This switch cannot be repaired and, i f faulty, must be
replaced. Refer to. Group 8L - Lamps for the service
procedures.
IGNITION KEY-IN SWITCH
The ignition key-in switch is integral to the igni­
tion switch, which Is mounted on the right side of the
steering column. I t closes a path to ground for the
buzzer module when the Ignition key is inserted i n
the ignition lock cylinder and the driver's door jamb
switch Is closed (door open). The switch opens when
the key is removed from the ignition lock cylinder.
This switch cannot be repaired and, i f faulty, the
entire ignition switch must be replaced. Refer to
Group 8D - Ignition. Systems for the service proce­
dures.
HEADLAMP SWITCH
The headlamp switch is located in the instrument
panel. I t closes a path to ground for the buzzer mod­
ule when the park or head lamps are on and the
driver's door jamb switch is closed (door open). The
switch opens the ground path when the park and
head lamps are turned off. The headlamp switch can­
not be repaired and, if faulty, must be replaced. Refer
to Group 8E - Instrument Panel Systems for the ser­
vice procedures.