VEHICLE THEFT SECURITY SYSTEM
The Vehicle Theft Security System (VTSS) module is located behind glove box. VTSS monitors
vehicle doors, hood, trunk key cylinder and ignition for unauthorized operation/entry. When alarm is
triggered, the horn will sound for 3 minutes and the parking lights will flash for 15-18 minutes.
When an unauthorized entry into vehicle occurs, the VTSS module signals Powertrain Control
Module (PCM) via CCD bus that it is not okay to start the engine. The PCM then "zeros out" the
pulse width of the fuel injectors, thus preventing the engine from starting (start/stall condition). The
engine will NOT start until VTSS is disarmed.
Initialization & Verification
An initialization procedure, included in VTSS, requires that vehicle record 20 engine cranking cycles
before allowing VTSS module to function. For this reason, VTSS requires verification. To verify
VTSS, perform the following: Open driver's door (all others closed). Remove ignition key. Lock
doors with power door lock switch. Close driver's door. If VTSS SET light flashes, system is armed
and operational. If VTSS SET light does not flash, 20 engine cranking cycles have not occurred or
there is a problem with VTSS.
Manual Override Mode & Tamper Alert Mode
The VTSS will not arm if the doors are locked using the key or the manual lock control (manual
override mode). If horn sounds 3 times when either front door is unlocked, the alarm was
activated/triggered (tamper alert mode).
Monday, February 21st, 2011 AT 7:39 PM