Dodge 2000 DURANGO Service Manual page 425

DN
DESCRIPTION AND OPERATION
AIRBAG SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 1
DRIVER SIDE AIRBAG MODULE . . . . . . . . . . . . . 2
PASSENGER SIDE AIRBAG MODULE. . . . . . . . . . 3
AIRBAG CONTROL MODULE . . . . . . . . . . . . . . . . 3
CLOCKSPRING . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DIAGNOSIS AND TESTING
AIRBAG SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 4
SERVICE PROCEDURES
AIRBAG SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 5
REMOVAL AND INSTALLATION
DRIVER SIDE AIRBAG MODULE . . . . . . . . . . . . . 6
DESCRIPTION AND OPERATION
AIRBAG SYSTEM
DESCRIPTION
A dual front airbag system is standard factory-in-
stalled safety equipment on this model. The primary
passenger restraints in this vehicle are the standard
equipment factory-installed seat belts, which require
active use by the vehicle occupants. The airbag sys-
tem is a supplemental passive restraint that was
designed and is intended to enhance the protection
for the front seat occupants of the vehicle only when
used in conjunction with the seat belts. See the own-
er's manual in the vehicle glove box for more infor-
mation on the features, use and operation of all of
the factory-installed passenger restraints, including
the airbag system.
The dual front airbag system consists of the follow-
ing components:
• Airbag Control Module (ACM)
• Airbag indicator lamp
• Clockspring
• Driver and passenger side airbag modules
(including the airbag inflators)
• Driver and passenger side knee blockers
• Wire harness and connections.
This group provides complete service information
for the ACM, both airbag modules, and the clock-
spring. Complete service information for the other
airbag system components can be located as follows:
• Refer to Instrument Cluster in the proper sec-
tion of Group 8E - Instrument Panel Systems for
PASSIVE RESTRAINT SYSTEMS
TABLE OF CONTENTS
page
PASSIVE RESTRAINT SYSTEMS
DRIVER SIDE AIRBAG MODULE TRIM
COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
PASSENGER SIDE AIRBAG MODULE. . . . . . . . . . 9
AIRBAG CONTROL MODULE . . . . . . . . . . . . . . . 12
CLOCKSPRING . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ADJUSTMENTS
CLOCKSPRING CENTERING . . . . . . . . . . . . . . . . 14
SPECIAL TOOLS
PASSIVE RESTRAINT SYSTEMS . . . . . . . . . . . . 15
complete service information for the airbag indicator
lamp.
• Refer to Steering Column Opening Cover in
the Removal and Installation section of Group 8E -
Instrument Panel Systems for complete service infor-
mation on the driver side knee blocker.
• Refer to Glove Box in the Removal and Instal-
lation section of Group 8E - Instrument Panel Sys-
tems for complete service information on the
passenger side knee blocker.
• Refer to Airbag System in the Contents of
Group 8W - Wiring Diagrams for complete service
information and circuit diagrams for the airbag sys-
tem wiring components.
See the proper Diagnostic Procedures manual to
test or diagnose a problem with any component of
the airbag system.
OPERATION
The airbag system electrical circuits are continu-
ously monitored and controlled by a microprocessor
and software contained within the Airbag Control
Module (ACM). The ACM also contains an impact
sensor and a safing sensor, which are monitored by
the ACM to determine when an impact occurs that is
severe enough to require airbag system protection.
When a frontal impact is severe enough, the ACM
signals the inflator units of both airbag modules to
deploy the airbags.
An airbag indicator lamp in the instrument cluster
lights for about seven seconds as a bulb test, each
time the ignition switch is turned to the On or Start
positions. Following the bulb test, the airbag indica-
tor lamp is turned on or off by the ACM to indicate
8M - 1
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