Circuit/System Description

The brake pressure modulator valve assembly contains an isolation solenoid valve and a dump solenoid valve for each wheel and a traction control/stability control prime solenoid valve and isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, traction control or electronic stability program is required the electronic brake control module (EBCM) turns the required solenoid valves ON.