Principles of Operation

PRINCIPLES OF OPERATION

Perimeter Anti-theft
The perimeter anti-theft feature provides an audible and visual alarm when unauthorized access to the vehicle is detected. When an intrusion is detected by any door, hood ajar switches, or trunk tamper switch the switch sends a ground signal to the smart junction box (SJB). When the SJB receives a signal indicating intrusion into the vehicle, the SJB supplies a ground signal to the horn control relay and the parking lamps relay. The relay closes, supplying the power which activates the horn and the parking lamps. The perimeter anti-theft feature does not arm until 20 seconds elapses after locking the vehicle. The perimeter anti-theft device disarms only when:
- unlock is pressed on the remote keyless entry (RKE) transmitter
- the keyless entry keypad code is entered
- the door, or luggage compartment lid lock cylinder is turned to unlock
- the ignition switch position changes to RUN or START