Dodge dakota 2002 Service Manual page 670

DR
VEHICLE THEFT SECURITY
DESCRIPTION
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 1
SENTRY KEY IMMOBILIZER SYSTEM (SKIS)
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING
VEHICLE THEFT SECURITY SYSTEM
VEHICLE THEFT SECURITY
DESCRIPTION
DESCRIPTION
The Vehicle Theft/Security System (VTSS) is
designed to protect against whole vehicle theft. The
system monitors the vehicle doors and ignition for
unauthorized operation.
The VTSS activates:
• Sounding of the horn
• Flashing of the park lamps
• Flashing of the head lamps
The Remote Keyless Entry (RKE) has 1 mode of
operation, CUSTOMER USAGE mode. The cus-
tomer usage mode provides full functionality of the
module and is the mode in which the RKE module
should be operating when used by the customer.
SENTRY KEY IMMOBILIZER SYSTEM (SKIS)
The Sentry Key Immobilizer System (SKIS) is
designed to provide passive protection against unau-
thorized vehicle use by preventing the engine from
operating while the system is armed. The primary
components of this system are the Sentry Key Immo-
bilizer Module (SKIM), the Sentry Key transponder,
the Vehicle Theft/Security System (VTSS) indicator
LED, and the Powertrain Control Module (PCM).
The SKIM is installed on the steering column near
the ignition lock cylinder. The transponder is located
under the molded rubber cap on the head of the igni-
VEHICLE THEFT SECURITY
TABLE OF CONTENTS
page
. 1
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VEHICLE THEFT SECURITY
STANDARD PROCEDURE
CONFIGURING A NEW MODULE / SWITCH
OPERATING MODES . . . . . . . . . . . . . . . . . . . . 3
SENTRY KEY IMMOBILIZER SYSTEM
INITIALIZATION . . . . . . . . . . . . . . . . . . . . . . . . 3
SENTRY KEY IMMOBILIZER SYSTEM
TRANSPONDER PROGRAMMING . . . . . . . . . . 4
SENTRY KEY IMMOBILIZER SYSTEM
INDICATOR LAMP
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
tion key. The VTSS indicator LED is located in the
instrument cluster.
The SKIS includes two valid Sentry Key transpon-
ders from the factory. This is so the customer can self
program new keys if one is lost. If the customer
wishes, additional non-coded blank Sentry Keys are
available. These blank keys can be cut to match a
valid ignition key, but the engine will not start
unless the key transponder is also programmed to
the vehicle. The SKIS will recognize no more than
eight valid Sentry Key transponders at any one time.
The SKIS performs a self-test each time the igni-
tion switch is turned to the ON position, and will
store Diagnostic Trouble Codes (DTC's) if a system
malfunction is detected. The SKIS can be diagnosed,
and any stored DTC can be retrieved using a
DRBIII scan tool as described in the proper Body
Diagnostic Procedures Manual.
DESCRIPTION
The Sentry Key Immobilizer Module (SKIM) con-
tains a Radio Frequency (RF) transceiver and a cen-
tral processing unit, which includes the Sentry Key
Immobilizer System (SKIS) program logic. The SKIS
programming enables the SKIM to program and
retain in memory the codes of at least two, but no
more than eight electronically coded Sentry Key
transponders. The SKIS programming also enables
the SKIM to communicate over the Programmable
Communication Interface (PCI) bus network with the
Powertrain Control Module
DRBIII scan tool.
8Q - 1
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(PCM), and/or the