The anti-lock braking system (ABS) consists of an electronic control unit (ECU), wheel speed sensors, a hydraulic unit 1 (fig. 1) with hydraulic solenoid valves, an electrically driven return pump and a warning light 4 in the instrument cluster

Let's look at how to replace the voltage regulator and rectifier unit

If the engine power drops, there is increased noise, or howls are periodically heard during the operation of the fuel pump, then the fuel pump is most likely out of order