Electrical system

Bosch 5.0 system has a very simple and compact structure, which increases reliability. The number of external components is minimized. Of these, there were only wheel sensors of the ABS warning light and brake light switch.

The front and rear wheel sensors are used to measure the speed of the wheels. Based on their signals ABS control module determines whether exhibit any tendency towards wheel locking.

The ABS warning light alerts the driver that due to a system fault has occurred in automatic shutdown. However, the brake system continues to function normally.

Brake light switch informs the control unit of the braking. This allows the control module to more accurately control the parameters of rotation of the wheels.

Diagnostic connector used to connect the Volvo System Tester in the performance diagnostics.

If the vehicle is equipped with DSA (Dynamic Stability Control), the control module receives data on DSA rotational speed of the wheels, which are needed to measure probuksovyvaya. This information control module receives a DSA control module ABS. For this purpose, are three lines of communication. The system DSA uses the brakes to control probuksovyvaya.

Internal relays (pump and valve) have separate connections that are protected by fuses.

When you turn on the ignition, the system checks all the components of the electrical resistance. During this test warning light. Once validated, (4) the lamp should go out.

When driving test pump motor (and thus - the relay) is performed at a speed of 6 km / h. Also involves the intake and exhaust valves. At a speed of 40 km / h is carried out by operation of wheel sensors. During operation of the ABS pump operates continuously.

The valves regulate the pressure in the wheel brake cylinders.