Chrysler 2005 Sebring, Service Manual, Page: 586 / 3204

VEHICLE THEFT SECURITY
TABLE OF CONTENTS
page page
VEHICLE THEFT SECURITY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - SENTRY KEY
IMMOBILIZER SYSTEM . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING - VEHICLE
THEFT SECURITY SYSTEM . . . . . . . . . . . . . . 3
TRANSPONDER KEY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
STANDARD PROCEDURE - TRANSPONDER
PROGRAMMING . . . . . . . . . . . . . . . . . . . . . . . 4
VTSS/SKIS INDICATOR LAMP
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
VEHICLE THEFT SECURITY
DESCRIPTION
VEHICLE THEFT SECURITY SYSTEM
The Vehicle Theft Security System (VTSS) is
designed to protect against whole vehicle theft. The
system monitors vehicle doors, decklid, and ignition
action for unauthorized operation. The alarm acti-
vates:
•
Sounding of the horn
•
Flashing of the park and tail lamps
•
Flashing of the headlamps
SENTRY KEY IMMOBILIZER SYSTEM
The Sentry Key Immobilizer System (SKIS) is
available as a factory-installed option on this vehicle.
It is designed to provide passive protection against
unauthorized vehicle use by disabling the engine,
after two (2) seconds of running, whenever an invalid
key is used to start the vehicle. The SKIS is active
whenever the ignition is on and does not require any
customer intervention. The primary components of
the system are the Sentry Key Immobilizer Module
(SKIM), Sentry Key (ignition key w/ a transponder
molded into the head), indicator light, Body Control
Module (BCM), and the Powertrain Control Module
(PCM). The SKIM is mounted to the steering column
with the molded, integral antenna mounted on the
light halo surrounding the ignition lock cylinder. The
indicator light, is located in the message center.
OPERATION
VEHICLE THEFT SECURITY SYSTEM
Upon failure of proper Sentry Key Immobilizer
Module (SKIM) communication to the Powertrain
Control Module (PCM), the PCM will shut off fuel
after two seconds of run time. The engine will not
start on the key cycle that the failure occurred, a full
key down sequence must be performed for the engine
to crank again. After six consecutive fuel shut-offs,
the engine will no longer crank on subsequent key
cycles. The failure must be corrected and a valid
communication process between the SKIM and the
PCM must occur for the engine to crank and start
again.
The electronics for the Vehicle Theft Security Sys-
tem (VTSS) are part of the Body Control Module
(BCM). The system is armed when the vehicle is
locked using the:
•
Power door lock switches (with any door ajar)
•
Remote Keyless Entry transmitter.
•
Door Cylinder Lock Switches.
For vehicles equipped with SKIS, the doors do not
have to be locked to enable the fuel shut off feature.
After the vehicle is locked and the last door is
closed, the LED indicator in the cluster will flash
quickly for 16 seconds, indicating that arming is in
progress. If no monitored systems are activated dur-
ing this period, the system will arm. The LED will
extinguish unless the decklid is open. If the decklid
is open, the LED will flash at a slower rate. This
indicates that the system is armed.
If fault is detected on any key cylinder input, the
LED indicator will remain solid during the arming
process, although the system will still arm. If the
indicator LED does not illuminate at all upon door
closing it indicates that the system is not arming.
Passive disarming occurs upon normal vehicle
entry by unlocking either door with the ignition key/
remote transmitter. This disarming will also halt the
alarm once it has been activated.
A tamper alert exists to notify the driver that the
VTSS had been activated. This alert consists of 3
horn pulses when the vehicle is disarmed.
JR
VEHICLE THEFT SECURITY 8Q - 1