VSA Mode (Pressure Intensifying Operation)
WARNING: This page is about a different car, the 2003 Acura 3.2CL and 2002 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
In pressure intensifying operation, the apply valve opens, the dump valve closes, and pump motor operates. The cutting valve is closed by the brake fluid for VSA control pressing on the pressure piston. At the same time, the brake fluid in the pressure chamber provides pressure to the brake caliper. See Fig 1 .