Automotive anti-lock brake control system

An automotive anti-lock brake control system comprising:

• electromagnetic valves, having valve portions and solenoid portions for controlling brake hydraulic pressures of wheel brakes, respectively;
• hydraulic pumps for generating the brake hydraulic pressures;
• a housing accommodating the valve portions and the hydraulic pumps, wherein the solenoid portions protrude from one side of the housing,
• an electric motor joined to another side of the housing for driving the hydraulic pumps;
• an electronic control unit for controlling the energizing of the electric motor and the solenoid portions;
• a cover joined to the one side of the housing for covering the solenoid portions and the electronic control unit;
• a coupler provided on the cover for connection with an external electric circuit, the coupler having positive and negative motor coupler terminals which are connected to ends of an external power source respectively;
• a substrate provided in the electronic control unit;
• a positive side conductive line having one end connected to a positive terminal of the electric motor and the other end connected to the positive motor coupler terminal, the positive side conductive line having a relay circuit interposed at a position along the length thereof, and the positive side conductive line provided on the substrate;
• a negative side conductive line having one end connected to a negative terminal of the electric motor and the other end connected to the negative motor coupler terminal, the negative side conductive line provided on the substrate so as to function as a negative side power supply line for the substrate;
• and
• an electric component mounted on the substrate for preventing a generation of noise attributed to the electric motor, the electric component connecting the positive side conductive line to the negative side conductive lines.