1995-2001 of release
Repair and car operation
1.1. Periodicity of maintenance
+ 2. FE DOHC engines and Т8 DOHC
+ 3. Greasing system
+ 4. Cooling system
+ 5. Power supply system and release
+ 6. Fuel system
+ 7. Ignition system
+ 8. Coupling
+ 9. Mechanical transmission
+ 10. АКП G4A–EL
+ 11. АКП 50–40 LE
+ 12. Axes and power shafts
+ 13. Steering
+ 14. Wheels and tires
+ 15. Suspension bracket
+ 16. Body
+ 17. Central air
+ 18. Electric equipment
- 19. Brake system
19.2. Pumping of hydraulic system of a drive of brakes
19.3. Check of brake tubes and hoses
19.4. Replacement of brake hoses
19.5. Height of installation of a pedal of a brake
19.6. Free wheeling of a pedal of a brake
19.7. Distance of a pedal of a brake from a floor
19.8. Brake pedal
19.9. Check of the switch of a stoplight
19.10. Main brake cylinder
19.11. Check of the vacuum amplifier of brakes
19.12. Forward disk brake
19.13. Back disk brake
19.14. Pressure regulator
19.15. Parking brake
19.16. Anti-blocking system of brakes (ABS)
19.17. List of codes of malfunctions of brake system
19.18. Precautions at carrying out repair
19.19. Pumping of hydraulic system of a drive of brakes
19.20. Hydraulic control unit (HCV)
19.21. ABS control unit
19.22. Sensors of frequency of rotation of a wheel
19.23. Rotor of the forward sensor
19.24. Main survey
19.25. Check of functionality
19.26. Search and elimination of malfunctions
+ 20. Electric circuits
19.20. Hydraulic control unit (HCV)
The hydraulic HCV control unit consists of the pump with an electric motor and the klapanny block for management of pressure of ABS. The sensor is located in the electric motor of the pump and transmits a target signal to the ABS block which defines operability of the pump.
Diameter of a forward opening of a pipe of supply of brake liquid:
The main relay at the included ignition submits a food on the ABS control unit.
The engine relay on signals of the ABS control unit submits a food on the pump engine.
DIODE (D 1)
Protects the engine relay from a high voltage when giving food on the pump engine via the engine relay to prevent wear or jamming of contacts.
Includes a control lamp of ABS at disconnection of a chain of the ABS control unit.
The ABS control unit starts the self-diagnostics program after ignition inclusion. Troubleshooting in each chain and in each knot occurs by means of comparison of parameter of system to its limiting value which has been set in the ABS control unit. The ABS control unit keeps a code of malfunction and deduces four figures of this code by means of a control lamp of ABS at connection with the case of a conclusion of ABS of the diagnostic socket.
Check of codes of self-diagnostics
How to consider codes of malfunctions
Deleting of codes of malfunctions
In the ABS control unit the program of automatic deleting of a code of malfunction which works in two stages is provided.
HYDRAULIC CONTROL UNIT (HCV)
SENSOR OF FREQUENCY OF ROTATION
The sensor of frequency of rotation finds rotation of a wheel and consists of a constant magnet and the reading-out coil. Sensors of frequency of rotation of forward wheels fasten to a power shaft, sensors of frequency of rotation of back wheels – to a spindle of a back nave.
When passing teeths of a rotor about the sensor the magnetic field of the sensor therefore the tension impulse is developed changes. This tension is proportional to frequency of rotation of a wheel, and its period can change. Defining the period, it is possible to obtain data on speed.
CONTROL LAMP OF ABS
The control lamp of ABS located in a combination of devices, lights up on 2 with the ambassador of inclusion of ignition.
If the control lamp of ABS does not die away through 2 with the ambassador of inclusion of ignition or lights up periodically, means in ABS there are violations.
In the presence of violations the brake system works as standard brake system.