Dodge Dakota Sport 2001 Service Manual page 562

AN
VEHICLE THEFT SECURITY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . . 3
VEHICLE THEFT SECURITY SYSTEM . . . . . . . . 3
SENTRY KEY IMMOBILIZER SYSTEM . . . . . . . . 4
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . . . 6
VEHICLE THEFT SECURITY
DESCRIPTION - VEHICLE THEFT SECURITY
SYSTEM
The Vehicle Theft Security System (VTSS) is an
available factory-installed option on this model. The
VTSS is designed to provide perimeter protection
against unauthorized use or tampering by monitoring
the vehicle doors and the ignition system. If unautho-
rized use or tampering is detected, the system
responds by pulsing the horn and flashing the head-
lamp high beams. If the vehicle is also equipped with
the optional Sentry Key Immobilizer System (SKIS),
which provides passive vehicle protection by prevent-
ing the engine from operating unless a valid electron-
ically encoded key is detected in the ignition lock
cylinder, the VTSS will also disable the engine from
operating until the system is disarmed. (Refer to 8 -
ELECTRICAL/VEHICLE THEFT SECURITY - DESCRIP-
TION - SENTRY KEY IMMOBILIZER SYSTEM).
The VTSS includes the following major compo-
nents, which are described in further detail else-
where in this service information:
• Central Timer Module - The Central Timer
Module (CTM) is located on the left cowl side inner
panel under the driver side outboard end of the
instrument panel. The CTM contains a microproces-
sor and software that allow it to provide the proper
VTSS features and outputs based upon the moni-
tored inputs. The CTM circuitry monitors hard wired
switch inputs, as well as message inputs received
from other vehicle electronic modules on the Pro-
grammable Communications Interface (PCI) data bus
network. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/BODY CONTROL/CENTRAL
TIMER MODULE - DESCRIPTION).
• Door Ajar Switch - A door ajar switch is inte-
gral to the latch of each door in the vehicle. These
switches provide an input to the VTSS indicating
whether each door is opened or closed. (Refer to 8 -
VEHICLE THEFT SECURITY
TABLE OF CONTENTS
page
VEHICLE THEFT SECURITY
SKIS INITIALIZATION . . . . . . . . . . . . . . . . . . . . . 6
SENTRY KEY TRANSPONDER
PROGRAMMING. . . . . . . . . . . . . . . . . . . . . . . . . 6
TRANSPONDER KEY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ELECTRICAL/LAMPS/LIGHTING
DOOR AJAR SWITCH - DESCRIPTION).
• Door Cylinder Lock Switch - A door cylinder
lock switch is located on the back of each front door
lock cylinder. This switch provides an input to the
VTSS indicating whether the system should remain
armed or be disarmed. (Refer to 8 - ELECTRICAL/
POWER LOCKS/DOOR CYLINDER LOCK SWITCH
- DESCRIPTION).
• Horn Relay - The horn relay is located in the
Power Distribution Center (PDC) in the engine com-
partment near the battery. The horn relay is nor-
mally activated by the horn switch to control the
sounding of the vehicle horn or horns. However, it
can also be activated by an output of the CTM to pro-
vide an audible indication that unauthorized vehicle
use or tampering has been detected. (Refer to 8 -
ELECTRICAL/HORN/HORN RELAY - DESCRIPTION).
• Security Indicator - A red Light Emitting
Diode (LED) located in the ElectroMechanical Instru-
ment Cluster (EMIC) is illuminated by an output of
the CTM to indicate the status of the VTSS or SKIS.
This LED is integral to the instrument cluster. (Refer
to 8 - ELECTRICAL/INSTRUMENT CLUSTER -
DESCRIPTION).
Hard wired circuitry connects many of the VTSS
components to each other through the electrical sys-
tem of the vehicle. These hard wired circuits are
integral to several wire harnesses, which are routed
throughout the vehicle and retained by many differ-
ent methods. These circuits may be connected to each
other, to the vehicle electrical system and to the
VTSS components through the use of a combination
of soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
8Q - 1
page
- INTERIOR/