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8.3.8. System of definition of presence of the passenger on a front seat (PPD)

This system is intended for definition of presence of the passenger on a front seat. In the absence of the passenger the system prevents useless operation of a safety cushion in case of accident. A basic element of system is the loading sensor.
Threshold of sensitivity of the sensor: it is loaded – more than 15 kg, there is no loading – 0,6 kg. Characteristics of the sensor:
– at loading> 15 kg resistance <50 kOhm;
– at loading <0,6 kg resistance> 50 kOhm.

Fig. 8.45. System of definition of presence of the passenger on a front seat (PPD)