Fig. 1.118. Block diagram of the seat belt warning system
If the seat belt is not fastened, the indicator lamp flashes and the buzzer sounds.
A safety belt warning system is included as standard.
After starting the engine, the system determines the state of the seat belts based on signals from sensors in the buckles (driver and front passenger seat belts) and seat occupancy sensors.
If the speed exceeds 15 km, the buzzer sounds, drawing the driver and passenger's attention to unfastened seat belts. After 30 seconds, the sound changes. This sound lasts for about 90 seconds. Once the buzzer is turned on, it continues to sound until the seat belts are fastened or the engine is turned off.
Fig. 1.119. Passenger presence sensor on the seat
The article was copied from the portal www.toyotaman.ru
Passenger presence sensor on the seat
An occupancy sensor installed in the front passenger seat cushion detects whether there is a passenger in the front seat.
The sensor, the design of which is shown in the figure, is two plate electrodes with a gasket. When a passenger sits on the seat, the electrodes are shorted through a hole in the gasket, causing an electric current to flow through the circuit.
Thus, the sensor allows you to determine the presence of a passenger in the front seat.