General information
Some of the models discussed in this manual are equipped with an additional security system (SRS), better known as airbags. The system provides additional protection for the driver and front passenger of the car in the event of a severe frontal impact. The driver airbag module is located under the steering wheel pad. The passenger airbag module is located on the right under the dashboard of the car, on the surface of which a warning inscription in the form of the abbreviation SRS is applied.
The sensor unit / diagnostic module is also placed under the instrument panel, in its central part (refer to accompanying illustration).
Airbag modules
Pillow activation (ek) safety occurs when the SRS directional overload sensors are triggered. Closing the circuit of the airbag module leads to almost instantaneous filling of the latter with nitrogen released as a result of the combustion of a powdery mixture of sodium azide with copper oxide. In the event of failure of the on-board battery, the system switches to power from a backup source built into the SRS module. It should be noted that the passenger airbag is usually larger in volume than the driver's airbag and is equipped with a metal carrier body, which splits into two halves when the module is triggered, and a finishing cover.
Sensor unit / diagnostic module
The SRS sensing and self-diagnosis module provides power to the airbag modules at the time of a collision that causes sufficiently severe directional overloads. The system is activated even in the event of an emergency failure of the onboard battery. The status of the SRS components is polled by the module every time the engine is started and is accompanied by a short-term operation of the control lamp mounted in the instrument panel of the car «AIR BAG». In case of failure of any beater of the nodes, the control lamp does not turn off. A malfunction in the system is also indicated by the operation of the warning lamp while driving, the car should be driven to a service station as soon as possible.