Vehicle Theft Security - Description

DESCRIPTION

The Vehicle Theft Security System (VTSS) is comprised of two primary subsystems: Vehicle Theft Alarm (VTA) and Sentry Key Immobilizer System (SKIS). The VTA is an active system that provides visual and audible responses as deterrents to and warnings of unauthorized vehicle tampering. The SKIS is a passive system that effectively immobilizes the vehicle against unauthorized operation. Following are paragraphs which describe these subsystems of the VTSS.

Certain functions and features of the VTSS rely upon resources shared with or controlled by other electronic modules in the vehicle over the Controller Area Network (CAN) data bus. Other modules that may affect VTSS operation are:

- ElectroMechanical Instrument Cluster (EMIC) - Also sometimes referred to as the Cab Compartment Node (CCN). Driver and passenger front and rear doors, and liftgate ajar switch status. VTA system logic. Security indicator control. Instrument Cluster - Description.
- Powertrain Control Module (PCM) - SKIS engine control logic. Powertrain Control Module - Description.
- Steering Column Module (SCM) -Steering Column Module - Description.
- Totally Integrated Power Module (TIPM) - Hood ajar switch status (export only). Exterior lighting system and horn system control Totally Integrated Power Module (TIPM) - Description.

Except for the Sentry Key transponders, which rely upon Radio Frequency (RF) communication, hard wired circuitry connects the VTA and SKIS components to the electrical system of the vehicle.

VEHICLE THEFT ALARM

The VTA is available in two different configurations, one is designed for vehicles manufactured for sale in North America; while the other is designed for vehicles manufactured for sale in markets outside of North America. In addition, the VTA for export is available in two versions: base and premium. All vehicles equipped with VTA are also equipped with the Remote Keyless Entry (RKE) system and the Sentry Key Immobilizer System (SKIS), regardless of their market destination.

The North American and export base version of the VTA system provide perimeter vehicle protection by monitoring the vehicle doors, the ignition switch, the trunk, and for vehicles built for certain markets where it is required equipment, the hood. If unauthorized vehicle use or tampering is detected, these systems respond by pulsing the vehicle horn as an audible deterrent and flashing certain exterior lamps as a visual deterrent.

The export premium version of the VTA system is only available in vehicles manufactured for sale in certain markets where it is required equipment. The export premium version of the VTA provides the same perimeter protection features as the base version, but adds interior vehicle intrusion protection. The export premium VTA also supplements the pulsing horn feature of the base version with a siren as the audible deterrent, while retaining the flashing exterior lamps as the visual deterrent.

The VTA includes the following major components, which are described in further detail elsewhere in this service information:

- Door Ajar Switches - A door ajar switch is integral to the door latch mechanism of each front and rear door.
- Hood Ajar Switch - A hood ajar switch is located in a bracket on the left rear side of the engine compartment, near the shock tower of vehicles built for sale in certain export markets where it is required equipment.
- Intrusion Module - The intrusion module is included on vehicles built for sale in certain export markets where required.The JS41 (sedan), intrusion module is located underneath the instrument panel upper panel, just to the right centerline of the instrument panel base, next to the remote compass module. On the JS27 (convertible) the intrusion module and sensors are incorporated into the dome lamp assembly.
- Intrusion Sensor Receiver - An intrusion sensor receiver is located behind and mounted to the right A-Pillar trim panel of vehicles built for sale in certain export markets where it is required equipment.
- Intrusion Sensor Transmitter - An intrusion sensor transmitter is located behind and mounted to the left Upper C-Pillar trim panel of vehicles built for sale in certain export markets where it is required equipment.
- Trunk Ajar Switch - A liftgate ajar switch is integral to the latch for the liftgate in the vehicle.
- Security Indicator - A security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC), sometimes referred to as the Cab Compartment Node (CCN).
- Siren - An alarm siren is located in a hollow behind the right front splash shield, on the outer load beam of vehicles built for sale in certain export markets where it is required equipment.

SENTRY KEY IMMOBILIZER SYSTEM

The Sentry Key Immobilizer System (SKIS) is available as factory-installed standard equipment on this model. Vehicles equipped with the Vehicle Theft Alarm (VTA) are also equipped with SKIS. The SKIS provides passive vehicle protection by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition lock cylinder. The SKIS used in combination with the export premium version of the VTA adds a steering shaft lock feature that provides passive protection by preventing the vehicle from being steered unless a valid electronically encoded key is detected in the ignition lock cylinder, but is only available in vehicles manufactured for sale in certain markets where it is required equipment.

The SKIS includes the following major components, which are described in further detail elsewhere in this service information:

- Sentry Key Remote Entry Module - The Sentry Key REmote Entry Module (SKREEM) is sometimes referred to as the Wireless Control Module (WCM). The SKREEM/WCM is located on the instrument panel to the right side of the steering column near the ignition lock cylinder housing and an integral molded plastic antenna ring circles the ignition lock cylinder like a halo. The SKREEM/WCM and its antenna are concealed beneath an ignition switch bezel on the instrument panel.
- Sentry Key Transponder - The Sentry Key transponder is contained within the Remote Keyless Entry (RKE) transmitter integral to the head of the ignition key. Transponder Key - Description.
- Security Indicator - A security indicator is integral to the ElectroMechanical Instrument Cluster (EMIC).