TCS Modulator Fluid Flow

TCS Modulator Base Braking Mode:

Each TCS channel consists of a motor, piston, ball screw, spring, and poppet valve. Under normal operating conditions (base brakes) the piston is located in the downward (or home) positions and the poppet valve is unseated. This is accomplished by turning the ball screw via the motor to drive the nut downward. The brake fluid enters the inlet port of the TCS modulator, flows past the unseated poppet valve to the outlet port of the TCS modulator, and then out to the front calipers. There are no solenoid valves or ESB's within the TCS modulator.