Contents: Driver Side Safety Module ↓ Passenger side safety module ↓ Control and diagnostic unit ↓ Disabling the airbag ↓
Airbags (SRS pneumatic safety system) are designed to protect the driver (and the passenger) in the front seat in the event of a collision.
Some vehicles are equipped with 2 airbags, one of which (from the driver's side) mounted in the central part of the steering wheel, and the other in the ceiling part of the glove box. The system also includes a control and diagnostic unit mounted under the dashboard in the center of the car.
Driver Side Safety Module
The module consists of a packed cushion and a pumping device (reactor), which is located under the cushion and connected to it by an opening through which gas is supplied when a signal is received.
The signal is sent via a cable wound into a flexible spiral around the steering wheel shaft, regardless of the steering wheel angle. The cushion is inflated with nitrogen, which is formed as a result of the reaction of copper oxide and sodium azide.
Passenger side safety module
The module consists of a pumping device (reactor), a folded cushion, a reactor and a facing panel.
The passenger cushion is significantly larger than the driver's cushion. The support for the cushion is the steel reactor housing.
When the cushion is inflated, the seam of the facing panel breaks.
Control and diagnostic unit
The unit provides power and airbag activation even when the battery is disconnected.
The unit checks the status of the security system. The system indicator lamp (aIR-BAG lamp) first it lights up and then goes out if the system is working properly.
If the system is faulty, the lamp will continue to light or flash (or a beep sounds). In this case, the car should be immediately taken to a service station for inspection.
Warning! Disabling the airbag safety system: Failure to take precautions may result in accidental deployment of the airbag and serious injury.
When performing any work near the steering column or any component of the system, the airbags must be disabled.
Disabling the airbag
1. Set the wheels to the straight ahead position and turn the ignition key to the LOCK position.
2. Disconnect the battery from ground.
3. Start work after at least 2 minutes, which is required for the capacitor to discharge.
When handling the airbag container, always keep the lined side of the container facing away from you. Never place the container with the lined side down. Never measure the resistance of any unit of the airbag system, as the airbag may be triggered by the ohmmeter battery.
Before performing welding work, disconnect the yellow airbag connector, which is located under the steering column near the switch cluster connector (from the driver's side) or glove compartment (from the passenger side).
It is prohibited to throw away the container with the pillow.