Antitheft and Alarm Systems: Description and Operation

INTRODUCTION
The Vehicle Theft Security System (VTSS) is passive system and is designed to protect against whole vehicle theft. The system monitors vehicle doors, trunk key cylinder, and ignition action for unauthorized operation. The alarm activates:
- Sounding of the horn
- Flashing of the interior lamps
- Flashing of the headlamps
- An engine kill feature

Passive arming occurs upon normal vehicle exit: Open door, lock with power locks, close door. The Vehicle Theft security LED lamp in the instrument cluster will flash quickly for 15 Seconds, indicating that arming is in progress. If no monitored systems are activated during this period, the system will arm. After 15 Seconds the LED lamp will continue to flash at a slower rate. This indicates that the system is armed. If the trunk key cylinder switch is not sensed by the system, the LED lamp will remain lit during the arming process, although the system will still arm. The system is to be considered as an active armed system when using:
- The Remote Keyless Entry
- The Central Lock Feature.

If the LED lamp does not illuminate at all upon door closing it indicates that the system is not arming.

Passive disarming occurs upon normal vehicle entry by unlocking either door with the ignition key/remote transmitter. This disarming will also halt the alarm once it has been activated.

A tamper alert exists to notify the driver that the alarm had been activated. If the alarm has since timed-out for at least 3 Minutes but not more than 18 Minutes ago. This alert consists of 3 horn pulses when the vehicle is disarmed.

The alarm system will not arm if the doors are locked manually by pushing the lock knobs. This will manually override the system.

SYSTEM OPERATION
Central Lock/Unlock System
The central lock/unlock system uses the Vehicle Theft Security System door switch to lock and unlock all doors using the key Turning the key to the lock position in the driver's or passenger's door will lock all doors. Turning the key in the driver's door to the unlock position once will unlock driver's door only. Turning the key a second time within five Seconds of the first time will unlock all doors. Turning the key in the passenger's door to the unlock position will unlock all doors.

Using the door key cylinder or the RKE transmitter lock/unlock operation will arm/disarm the Vehicle Theft Security System.

Triggering The VTSS
Using the power door switch, ignition key or the keyless transmitter will arm the system. Any of the following actions will trigger the system:
1. Opening any door.
2. Removing the trunk lock cylinder.
3. Turning the ignition to the ON position.

NOTE: The ignition switch can be turned to the accessory position without triggering alarm system.