E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
- 13. Electric equipment
   13.1.2. Search of malfunctions
   13.1.3. Safety locks
   13.1.4. Relay
   13.1.5. Breaker of indexes of turn / alarm system
   13.1.6. Switches on a steering column
   13.1.7. Ignition lock
   13.1.8. Receiver
   13.1.9. Aerial
   13.1.10. Guard of devices
   13.1.11. SI payment (maintenance index)
   13.1.12. Headlights – replacement of lamps
   13.1.13. Adjustment of headlights
   13.1.14. Headlight case
   13.1.15. Replacement of lamps
   13.1.16. Screen wiper electric motor
   13.1.17. Heater of back glass
   13.1.18. Safety cushions
   13.1.19. System cruise control
   13.1.20. The central locking system
   13.1.21. Electric stelokpodjemnik
   + 13.2. Electroschemes
+ 14. Good advice


13.1.18. Safety cushions


Sensor arrangement ситемы pneumosafety
The sensor of system of pneumosafety is located in a motor compartment.

Late models are equipped with pneumosafety system (SRS system) which is intended for protection of the driver in case of collision.

The structure of system includes the packed pillow mounted in the form of the module in the center of a steering wheel, 2 sensors of shock loading strengthened on forward mudguards in a motor compartment and the safety sensor which is in salon. The device of forcing is under a pillow and is connected to it an opening through which it is injected gas at receipt of an electric signal. The signal moves on a cable winded in a flexible spiral round a shaft of a wheel. 2 sensors at blow with the set force close a chain. Operation of the device of gas evolution occurs only at short circuit of contacts of the safety sensor on which signals from 2 sensors of shock loading arrive. The block which contains the safety sensor, provides check of a condition of system of pneumosafety. The control lamp of system (AIRBAG lamp) at first lights up and at serviceable system dies away. If the system is faulty, the lamp continues to burn or blink. In this case it is necessary to hand over the car immediately in car-care center for check.