Citroën Xantia

since 1993 release

Repair and operation of the car



Citroën Xantia
+ Introduction
+ Operation manual
+ Routine maintenance
+ Repair of the engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Coupling
+ Transmission
+ Power shafts
+ Uniform hydraulic system
- Brake system
   Pumping of hydraulic system
   Replacement of hoses and tubes of a hydraulic path of the brake system
   Replacement of blocks of disk brake mechanisms of forward wheels
   Replacement of blocks of disk brake mechanisms of back wheels
   Check of a state, removal and installation of brake disks
   Removal, capital repairs and installation of supports of disk brake mechanisms of forward wheels
   Removal, capital repairs and installation of supports of disk brake mechanisms of back wheels
   Removal, capital repairs and installation of the valve of management
   Removal and installation of a pedal of a foot brake
   The parking brake - general information and adjustments
   Removal and installation of a control lever of the parking brake
   Removal and installation of cables of the drive of the parking brake
   Removal and installation of the sensor switch of stoplights
   System of anti-blocking of brakes (ABS) - the general information
   Removal and installation of components of system of anti-blocking of brakes
+ Running gear and steering
+ Body and finishing of salon
+ Onboard electric equipment
+ Schemes of electric equipment


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System of anti-blocking of brakes (ABS) - the general information

ABS is included in a basic equipment of some models, on others can be established in addition.

The system provides the modulation of hydraulic pressure in brake contours preventing premature blocking of wheels of the car. Each of wheels of the car is equipped with the sensor of frequency of rotation by which signals the ABS control unit determines the moment of the beginning of blocking of the corresponding wheel. Hydraulic contours of each of brake mechanisms switched on special electromagnetic valves. The same valves are built in in assembly of the hydraulic ABS modulator. The electronic control unit (ECU) of system according to which teams the necessary adjustment of hydraulic pressure in supports of brake mechanisms allowing to avoid premature blocking of wheels and to achieve maximum efficiency of braking of the car is made is responsible for functioning of the modulator.

ECU ABS is equipped with the built-in block of self-diagnostics fixing any system failures and compatible to the special electronic scanner by means of which specialists of car repair shop make reading of information on refusals entered in memory of the block in system.

The design and the principle of functioning of anti-blocking system on the Citroyon Xantia cars differ in nothing from the usual ABS applied on all other vehicles.

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