Opel Vectra B

since 1995 of release

Repair and car operation

Vektr B. Opel
+ 1.1. Governing bodies and control devices
+ 2. Maintenance
+ 3. Engines
+ 4. Heating, ventilation
+ 5. Fuel system
+ 6. Systems of start, ignition
+ 7. Transmission
- 8. Brake system
   8.1. Introduction
   8.2. Technical characteristics
   8.3. Pumping of hydraulic brake system
   8.4. Brake pipelines and hoses
   8.5. Replacement of forward brake shoes
   8.6. Replacement of back brake shoes on disk brakes
   8.7. Replacement of back brake shoes on drum-type brakes
   8.8. Replacement of brake shoes of the hand brake
   8.9. Lobbies and back brake disks
   8.10. Forward brake disk
   8.11. Back brake disk
   8.12. Back brake drum
   8.13. Forward support
   8.14. Back support
   8.15. Back working brake cylinder
   8.16. Main brake cylinder
   8.17. Brake pedal
   8.18. Vacuum amplifier of brakes
   8.19. Unilateral valve of the vacuum amplifier of brakes
   8.20. Adjustment of the hand brake
   8.21. Lever of the hand brake
   8.22. Cable of the hand brake
   8.23. Anti-blocking system of brakes (ABS)
   + 8.24. Elements of anti-blocking system of brakes
+ 9. Running gear
+ 10. Body
+ 11. Electric equipment
+ 12. Main malfunctions


8.23. Anti-blocking system of brakes (ABS)


The anti-blocking system prevents blocking of wheels at sharp braking. Thanks to it the car at complete braking remains operated. The system consists of the hydraulic block of a regulator and the 4th wheel sensors. The block of a regulator contains the electronic control device (ECU), hydraulic electromagnetic valves and the pump with an electric drive. Electromagnetic valves cope the ECU block which receives signals from the 4th sensors established on each wheel of the car which supervise speed of rotation of each wheel. Comparing these signals, the ECU block can define speed of the car. At the expense of comparison of speed of separately taken wheel with average speed of the car the control unit defines a condition of blocking of a wheel. When the wheel comes nearer to blocking, pressure of brake liquid is too high, therefore pressure in a support decreases on a control unit signal. It occurs until the wheel again will not start to be accelerated. Then the valve are closed again and created by a brake pedal pressure starts to affect repeatedly. However value of pressure in a brake contour of this wheel not above the general pressure in system. ABS work at sharp braking repeats on each wheel until the effort or the car is made a pedal will not stop.

At any malfunction in ABS system there is its shutdown. The control lamp of ABS on the dashboard in this case lights up and the brake system works in a usual mode.