Vehicle Theft Alarm

The Vehicle Theft Alarm (VTA) is factory-installed optional equipment on this vehicle. This system provides perimeter vehicle protection by monitoring the vehicle doors, the deck lid and the status of the ignition switch (Keyless Ignition Node/KIN). If unauthorized vehicle use or tampering is detected, the system responds by pulsing the vehicle horn as an audible deterrent and flashing certain exterior lamps as a visual deterrent.

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

• Body Control Module  - The Body Control Module (BCM) is located on the right cowl side inner (kick) panel within the passenger compartment, where it is concealed behind the instrument panel and the cowl side trim panel. Refer to MODULE, BODY CONTROL (BCM), DESCRIPTION .
• Deck Lid Ajar Switch  - A deck lid ajar switch is integral to the latch for the deck lid latch in the vehicle. Refer to SWITCH, DOOR AJAR, DESCRIPTION .
• Door Ajar Switches  - A door ajar switch is integral to the door latch mechanism of each door. Refer to SWITCH, DOOR AJAR, DESCRIPTION .
• Keyless Ignition Node  - The KIN is located in the instrument panel just inboard of the upper steering column opening. Refer to MODULE, KEYLESS IGNITION NODE (KIN), DESCRIPTION .
• Radio Frequency Hub  - The Radio Frequency Hub (RFH) is located on the package tray support behind the rear seat back where it is concealed beneath the package shelf trim. Refer to MODULE, RADIO FREQUENCY (RF HUB), DESCRIPTION .
• Security Indicator  - The security indicator is integral to the Instrument Panel Cluster (IPC) located in the instrument panel above the steering column opening, directly in front of the driver. Refer to DESCRIPTION .

The BCM and the RFH each contain a microcontroller and programming that allow them to communicate with each other and other electronic modules in the vehicle using the Controller Area Network (CAN) data bus. In addition, the KIN and the RFH communicate with each other using a dedicated Local Interface Network (LIN) data bus. Refer to COMMUNICATION, DESCRIPTION .