Vehicle Theft Security; Operation; Diagnosis And Testing - Sentry Key Immobilizer System - Chrysler PT Cruiser Service & Repair Manual

8Q - 2

VEHICLE THEFT SECURITY

VEHICLE THEFT SECURITY (Continued)

OPERATION

VEHICLE THEFT SECURITY SYSTEM
The system is armed when the vehicle is locked
using the:
• Power door lock switches.
• Remote Keyless Entry (RKE) transmitter.
• Key cylinder switches.
After the vehicle is locked and the last door is
closed, the circular red VTSS indicator in the instru-
ment cluster will flash quickly for 16 seconds, indi-
cating that arming is in progress. If no monitored
systems are activated during this period the system
will arm. After 16 seconds, the LED will continue to
flash at a slower rate indicating the system is armed.
If the VTSS indicator does not illuminate at all
upon door closing it indicates that the system is not
arming.
VTSS disarming occurs upon normal vehicle entry
by unlocking either door via the key cylinders or
RKE transmitter, or by starting the vehicle with a
valid Sentry Key. This disarming will also halt the
alarm once it has been activated.
A tamper alert exists to notify the driver that the
system had been activated. This alert consists of 3
horn pulses when the vehicle is disarmed.
The VTSS will not arm by mechanically locking the
vehicle doors. This will manually override the sys-
tem.
TRIGGERING THE VTSS
ARMING THE VTSS
Locking the power door switch and closing the door
or the keyless transmitter will arm the system, or
locking any door or liftgate with the key cylinder
switch.
SETTING OFF THE VTSS Any of the following actions will
trigger the system:
(1) Opening any door or liftgate.
NOTE: Only EXPORT alarm systems will include a
hood ajar switch, motion sensor, and decklid ajar
switch.
(2) Turning the ignition to the ON position with an
invalid key.
VEHICLE THEFT SECURITY SYSTEM - EXPORT
In the event the Premium VTSS is triggered, the
VTSS siren will sound and the turn indicator lamps
will flash on the premium security system. The pre-
mium system cannot be disarmed via the key cylin-
ders.
In the event the Standard VTSS is triggered, the
VTSS will sound the vehicle horn and flash the head-
lamp and park lamps in a alternating fashion.
The VTSS and RKE system receives signals from
the hand-held key fob or transmitter. European mar-
ket vehicles use 433 MHz frequency. Japan market
vehicles use 268 MHz frequency.
SENTRY KEY IMMOBILIZER SYSTEM
The SKIS includes keys from the factory which are
pre-programmed. Each SKIM will recognize a maxi-
mum of eight Sentry Keys. If the customer would
like to own additional keys other than those provided
with the vehicle, they can be purchased from any
authorized dealer. These keys must be programmed
to the SKIM on the vehicle in order for the system to
recognize them as valid keys. This can be done by
the dealer with a DRB III
tomer if this feature is available in their market and
they have two (2) valid keys already available to
them. Refer to the Service Procedures portion of this
system for additional details. The SKIS performs a
self-test each time the ignition switch is turned to
the ON position and will store Diagnostic Trouble
Codes (DTC's) if a system malfunction is detected.
The DTC's can be retrieved using a DRB III
tool. The SKIS can be diagnosed using the proper
Powertrain Diagnostic Procedures manual.
DIAGNOSIS AND TESTING - SENTRY KEY
IMMOBILIZER SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, (Refer to 8 - ELECTRICAL/RESTRAINTS -
WARNING). FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of this system. The most reli-
able, efficient, and accurate means to diagnose the
Sentry Key Immobilizer System (SKIS) involves the
use of a DRB lll scan tool and the proper Power-
train Diagnostic Procedures manual.
The Sentry Key Immobilizer System (SKIS) and
the Programmable Communication Interface (PCI)
bus network should be diagnosed using a DRB lll
scan tool. The DRB lll will allow confirmation that
the PCI bus is functional, that the Sentry Key Immo-
bilizer Module (SKIM) is placing the proper messages
on the PCI bus, and that the Powertrain Control
Module (PCM) and the instrument cluster are receiv-
ing the PCI bus messages. Refer to the proper Pow-
ertrain Diagnostic Procedures manual. Refer to
PT
scan tool or by a cus-
scan