Pressure Increase

If during the pressure hold or decrease mode the Electronic Brake (Traction) Control Module (EBCM/EBTCM) senses that the wheel speed is too fast it will increase pressure to the brake. It does this by opening the Hold (Inlet) valve and closing the Release (Outlet) valve in the Brake Pressure Modulator Valve (BPMV). The increased pressure comes from the master cylinder and is relevant to the pressure applied to the brake pedal.