Vehicle Theft Alarm System

VEHICLE THEFT ALARM SYSTEM

The Vehicle Theft Alarm System is a logic controlled system, using an electronic module that monitors the vehicle doors, hood, trunk, key cylinder, and ignition for unauthorized operation.

This system is composed of the security control module, four door ajar switches, hood ajar switch and striker, trunk key cylinder sensing switch, two door key cylinder disarming switches, instrument panel set lamp, Engine Controller, horn and horn relay, park and tail lamps, power door lock circuits, and ignition switch.

The Security Control Module has the capability of providing Bias on the C2D bus.

To avoid both an audible alarm and engine kill feature causing a problem in the assembly plant an initialization procedure was included in the system. This procedure requires that the vehicle has 20 engine cranks recorded, which means, systems will not be functional on all vehicles and will require dealer verification. System can be verified as follows:

1. Open driver's door

2. Remove ignition keys (keep in hand)

3. Lock doors with power door lock switch

4. Close driver's door

5. If I/P theft alarm "set" lamp flashes, system is operational and verified. If not, 20 engine cranks have not occurred.

When an engine controller has been replaced, 20 engine cranks must be reached before theft alarm becomes operational.