BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 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. Antenna
   13.1.10. Guard of devices
   13.1.11. Payment SI (index of maintenance)
   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. Electrical circuitries
+ 14. Useful tips


13.1.18. Safety cushions


Pneumosafety sitema sensor arrangement
The sensor of system of pneumosafety is located in a motor compartment.

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

Are a part of system 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 gas at receipt of an electric signal is supplied. The signal is given on the cable winded in a flexible spiral around a wheel shaft. 2 sensors at blow with the set force close a chain. Operation of the device of gas emission happens 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, then the lamp continues to burn or blink. In this case the car should be handed over immediately in car service for check.