Note: Since November 1993, to increase the level of protection of the car from theft, a Bosh multifunctional immobilizer has been installed on some models. Detailed information can be obtained from dealers.
1. All models sold in the UK are equipped with an anti-theft alarm system that controls the entry into the car along its perimeter, which contains an ignition immobilizer. The system protects all doors, hood and trunk lid/tailgate. It switches to standby mode after the car is closed. An anti-theft alarm system that monitors the interior of the cabin and is equipped with ultrasonic motion sensors is optional. On models of later releases with a station wagon equipped with such a system, a detector of its destruction is built into the rear window.
2. The system contains a slow start circuit that prevents the engine from starting if the alarm system is on. On later models with a passive anti-theft alarm system (PSPS) the power supply of the immobilizer circuit is turned off by the signal of the responding microcircuit built into the ignition key. The RPSS circuit is separate from the alarm circuit, so the immobilizer protects the car even if the alarm is not installed.
3. On later models, the alarm system also protects the audio unit. When you try to remove it, an audible alarm is activated.
4. The RFS transceiver assembly is arranged around the ignition switch and reads the code of the ignition key chip. Therefore, duplicate keys must be purchased from dealers.
5. Movement sensors for the interior alarm system are installed on the B-pillars. Each of these sensors contains an ultrasonic unit, which includes a receiver and a transmitter (see fig. 20.5, a, b). The receivers check whether the frequency of the reflected signal matches the reference frequency. In the event of a discrepancy between these frequencies, the system turns on the alarm.
6. The alarm system module is built into the central locking system module, which is located on a bracket installed under the front panel on its right side. On models of later releases, the PSPS module is also installed there. The set and reset microswitches are mounted in a housing on the lock cylinder holder for the door, tailgate or trunk lid.
7. To temporarily open the tailgate or trunk, a delay microswitch is installed on the lock cylinder. This prevents the alarm from functioning until the tailgate or trunk lid is closed again.
8. If the car is equipped with a central locking system, then its infrared receiver is installed on the outside door handle (see fig. 20.8). Please note that this receiver may be damaged by overheating. Therefore, when performing work related to heating (for example, when drying the car in the chamber after painting), should be protected with aluminum foil.
9. The alarm system has its own sound signal. On Sedan and Hatchback models, it is installed in the luggage compartment on the left side, on Station wagon models - on the right (see fig. 20.9, a, b).
10. The alarm system has a self-diagnosis function. Self-diagnosis is performed by pressing the hood microswitch or one of the lock position microswitches eight times within ten seconds. During this test, the horn or buzzer sounds whenever a door, hood or tailgate is opened. If the doors have locks, then the signal will sound if something moves inside the cabin. A complete system check can be performed using the Ford FDS 2000 Diagnostic Tester.
11. Door lock microswitches included in the alarm system are installed under the door lining (see fig. 20.11).
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