Toyota Corolla

1992-1998 of release

Repair and operation of the car



Toyota Corolla
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling systems, heating
+ 5. Fuel, exhaust systems
+ 6. System of decrease in toxicity
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Suspension bracket and steering
+ 11. Body
- 12. Electric equipment
   12.1. Safety locks
   12.2. The burned-through crossing points
   12.3. Automatic switches
   12.4. Relay
   12.5. Breakers of indexes of turns / alarm system
   12.6. The combined switch
   12.7. The switches installed on a steering column
   12.8. Lock of ignition and drum of the lock
   12.9. Switch of a heater of back glass
   12.10. Heater of back glass
   12.11. Radio receiver and loudspeakers
   12.12. Antenna
   12.13. Bulbs of headlights of head light
   12.14. Headlights of head light
   12.15. Replacement of bulbs
   12.16. System of day inclusion of headlights
   12.17. Engine of screen wipers
   12.18. Instrument guard
   12.19. Sound signal
   12.20. System cruise control
   12.21. System of the central lock
   12.22. System of window regulators
   12.23. Rear-view mirrors with the electric drive
   12.24. Safety airbag
   + 12.25. Electroschemes



12.24. Safety airbag

GENERAL INFORMATION

The additional system of passive safety which more often is called the safety airbag, can be established in various options, as a standard component or established at will, depending on model of the car and the market of sales.

The airbag of safety is installed to protect the driver and the passenger on forward sitting from receiving severe injuries in case of a head-on collision.

This system consists of the airbags of safety installed in the center of a steering wheel and on the right side of the dashboard, two sensors of collision installed in front of the car (for release models till 1995) and the central sensor located in salon of the car.

On some models, pyrotechnic tension devices of seat belts are installed in ordinary tension devices for a tightening of belts in case of a head-on collision.

Safety airbag module

The module of the airbag of safety consists of the case with the front panel (airbag) and systems of filling of a pillow air which is established on a reverse side of the case over an opening through which air gets to a safety cushion, filling it almost instantly when the electric signal comes.

In a special way the twirled wire which transmits a signal to the driver's module, is called as a spiral wire.

The spiral wire is the flat tape capable to carry out electric current which is twirled many times in order that it could transmit an electric signal, irrespective of the provision of a steering column.

Sensors

On release models till 1995 the system of the airbag of safety has three sensors: two sensors of collision in front of the car behind a bumper and are slightly higher than niches of wheels and the safety sensor which is located in the central electronic block of the airbag of safety installed in the central console. On models of release of 1996, all sensors are installed in the central electronic

Forward sensors of collision represent the switches reacting to pressure which close an electric chain in case of collision of sufficient force. The electric signal from sensors of collision is sent to the safety sensor located in the central electronic block of the airbag of safety which closes a chain and fills a pillow.

Central electronic block of the airbag of safety

The central electronic block of the airbag of safety turns on the safety sensor and the microprocessor which watches work of system. It checks system of the airbag of safety every time at start of the engine, ignition an alarm bulb of AIRBAG on an instrument guard, and, switching off it if the system works normally. If in system of the airbag of safety malfunction is found, the bulb will light up, and will not die away, and the central electronic block will remember a malfunction code. If the alarm bulb of the airbag of safety of AIRBAG lights up, and will not die away, the car needs to be given urgently to auto repair shop for repair.

Tension devices of seat belts

Besides safety airbags, the additional system of passive safety can also turn on pyrotechnic tension devices of seat belts which it is put in action by means of the gas sprays located in natyazhitel of seat belts. Pyrotechnic natyazhitel work from the signal sent by the central electronic block of the airbag of safety together with airbags, for giving to seat belts of a bigger tension and ensuring additional protection at collision.

WORK WITH THE ELEMENTS LOCATED NEAR ADDITIONAL SYSTEM OF PASSIVE SAFETY

Elements of additional system of passive safety


a). Primary latch is not closed
1. Edges
2. Secondary latch
3. Primary latch
b). Primary latch is closed
4. It is closed
с). The double latch is closed
5. It is closed

Each of sockets of connection of the airbag of safety uses system from two latches for increase of reliability of connection.
Prevention

Be accurate at a detachment of sockets of connection of the airbag of safety.


Sometimes, happens it is necessary to remove the steering wheel, the radio receiver or any other elements located near or on the dashboard. In this case, you should work in the close neighbourhood with wires and connections of additional system of passive safety.

It is easy to distinguish wires of additional system of passive safety from others; they have brightly yellow isolation.

Do not disconnect sockets of connection of wires of additional system of passive safety, except cases when you need to disconnect system. Also, do not use electronic instrumentations on wires of system.

Always disconnect additional system of passive safety before work near elements or wires of system.

Shutdown of additional system of passive safety


PERFORMANCE ORDER
1. Turn a steering wheel in the central situation, turn a key in the ignition lock in the situation Lock and get a key.
2. Disconnect a wire of the negative plug of the accumulator. Wait a couple of minutes until the reserve condenser is discharged.
3. Disconnect yellow sockets of connection at the basis of a steering column and on the right under the dashboard as it is described below.

Airbag of safety of the driver

PERFORMANCE ORDER
1. Remove the lower panel of finishing of a steering column under the dashboard (see subsection 11.23) for receiving access to the socket of connection of the airbag of safety.
2. Disconnect the socket of connection of wires of the airbag of safety of the driver.

Airbag of safety of the passenger

PERFORMANCE ORDER
1. Open a glove compartment and uncover in a glove compartment for receiving access to the socket of connection of the airbag of safety (see subsection 11.20).
2. Disconnect the yellow socket of connection of the device of filling by air of the airbag of safety of the passenger.

Inclusion of additional system of passive safety

PERFORMANCE ORDER
1. After you switched-off the airbag of safety and performed necessary operations on repair or service, connect sockets of connection of airbags of safety of the driver and passenger. Install into place the lower panel of finishing of a steering column and a cover in a glove compartment.
2. Connect a wire of the negative plug of the accumulator.
3. Turn a key in the ignition lock in the situation On and check that the alarm bulb of the airbag of safety of AIRBAG lit up approximately for six seconds, and then went out.