Description & Operation
Vehicle Theft Security System (VTSS) is designed for entire vehicle theft protection. System monitors doors, deck lid lock cylinder and ignition switch for unauthorized operation. When system is triggered, horn will sound, and headlights, parking lights, taillights and VTSS indicator light will flash. After 3 minutes, horn will stop sounding, but lights will continue to flash for another 15 minutes. VTSS will reset after it has been triggered and system has timed out for 18 minutes. When unauthorized entry has occurred, VTSS activates an engine kill feature. Vehicle will not start until VTSS is disarmed using key or Remote Keyless Entry (RKE) system. If vehicle is locked by manually pushing down the door lock mechanism, alarm will not arm.
Some vehicles are equipped with Sentry Key Immobilizer System (SKIS). SKIS is designed to prevent vehicle engine operation. SKIS consists of the Sentry Key Immobilizer Module (SKIM), Body Control Module (BCM), sentry transponder keys, VTSS indicator LED and Powertrain Control Module (PCM). SKIM is located on steering column and the transponder is located around the ignition lock cylinder. See Fig 1 . If an invalid ignition key is used, SKIM will send invalid signal to PCM, causing engine to start and run for 2 seconds, then stop. If vehicle is started with invalid keys 6 times in a row, vehicle will shut down until correct key is used.