Remote Keyless Entry (RKE) /Vehicle Theft Security System (VTSS)

This passive system is designed to protect against theft. The vehicle theft security system (VTSS) is part of the body control module, which monitors vehicle hood, doors, liftgate, and ignition for unauthorized operation. The alarm activates by sounding the horn, flashing the headlamps, park and tail lamps, and the VTSS indicator lamp, and providing an engine "no run" feature.

Passive arming occurs upon normal vehicle exit by turning the ignition off, opening the driver's door, locking the doors with the power lock, and closing the driver's door or locking the doors with Remote Keyless Entry (RKE). Manual arming occurs by using the key to lock the doors after closing them. The indicator lamp in the information center will flash for 15 seconds, showing that arming is in progress. If no monitored systems are activated during this period, the system will arm. If the hood ajar switch is seen as closed circuit by the system, the indicator lamp will remain steadily lit during the arming process, although the system will still arm.

When something triggers the alarm, the system will signal the headlamps, park lamps, and horn for about 3 minutes.

Tamper Alert - If the horn sounds three times when either front door or the liftgate is unlocked, it means the alarm was activated. Check the vehicle for tampering.

Manual Override - The system will not arm if the doors are locked using the manual lock control (by hand) or if the locks are actuated by an inside occupant after the door is closed.

When an unauthorized entry into the vehicle occurs, the VTSS sends a message via the CCD bus to the powertrain control module that it is not OK to start the engine. The powertrain control module then zeroes out the pulse width to the fuel injectors after the engine has been started, thus shutting down the engine (start and stall condition). The engine will not start until the system is disarmed.

To verify the system, proceed as follows:
1. Open the driver's door.
2. Remove the ignition key (but keep it in hand).
3. Lock the doors with the power lock switch.
4. Close the driver's door.

NOTE: After the doors are closed, locking the doors with RKE will also arm the system.

NOTE: If the VTSS indicator lamp flashed, the system is operational and verified. If not, there may be a problem with the system.

System initialization is accomplished by:
1. Opening the hood to ensure the hood ajar circuit is closed.
2. Rotating the key in liftgate cylinder to unlock/disarm position.

Arming/Disarming - Active arming occurs when the remote keyless entry transmitter is used to lock the vehicle doors, whether the doors are open or closed. If one or more doors are open, the arming sequence is completed only after all doors are closed.

Passive disarming occurs upon normal vehicle entry (unlocking either front door or the liftgate with the key). This disarming also will halt the alarm once it has been activated.

Active disarming occurs when the remote keyless entry transmitter is used to unlock the vehicle doors. This disarming also will halt the alarm once it has been activated.

System Self-Test

NOTE: System self-test can be entered only with the DRB.

NOTE: A powertrain control module from a vehicle equipped with a vehicle theft security system cannot be used in a vehicle that is not equipped with a vehicle theft security system.

If the VTSS indicator lamp comes on after ignition ON and stays on, the CCD bus communication with the powertrain control module possibly has been lost.