Vehicle Theft Security System

The Vehicle Theft Security System (VTSS) is designed to provide perimeter protection against unauthorized vehicle use or tampering by monitoring the vehicle doors, the liftgate, the liftgate flip-up glass, the ignition system and, only on vehicles built for sale in certain international markets where it is required equipment, the hood. If unauthorized vehicle use or tampering is detected, the system responds by pulsing the horn and flashing the exterior lamps. In many markets the VTSS also includes the Sentry Key Immobilizer System (SKIS), which provides passive vehicle protection by preventing the engine from operating unless a valid electronically encoded key is detected in the ignition lock cylinder.

The VTSS includes the following major components:

• Door Ajar Switch 
• Driver Cylinder Lock Switch 
• Hood Ajar Switch 
• Liftgate Ajar Switch 
• Liftgate Flip-Up Glass Ajar Switch 
• Low Beam Headlamp Relay 
• VTSS Indicator  (Refer to DESCRIPTION  ).

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

1. Cab Compartment Node (CCN) (Refer to ELECTRICAL/INSTRUMENT CLUSTER - DESCRIPTION) .
2. Driver Memory Mirror Module (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/MEMORY HEATED SEAT/MIRROR MODULE - DESCRIPTION) .
3. Passenger Memory Mirror Module (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/MEMORY HEATED SEAT/MIRROR MODULE - DESCRIPTION) .
4. Steering Control Module (SCM) (Refer to STEERING/COLUMN/STEERING COLUMN CONTROL MODULE - DESCRIPTION) .