Subaru LEGACY 2002 Quick Reference Index page 408

VEHICLE DYNAMICS CONTROL (VDC) SYSTEM
VDC
2. PRESSURE "DECREASE" CONTROL WITH BRAKE PEDAL DEPRESSED
The inlet solenoid valve and outlet solenoid valve are energized, while the other solenoid valves
are not energized. This means that the ports of the inlet solenoid valve and suction solenoid valve
are closed, while those of the outlet solenoid valve and cut solenoid valve are open.
Although the fluid pressure generated by the master cylinder can reach the inlet solenoid valve
through the open port of the cut solenoid valve, the pressurized fluid cannot go further since the
passage is blocked there. On the other hand, since the port of the outlet solenoid valve is open,
the brake fluid in the wheel cylinder can flow out into the reservoir. The fluid pressure in the wheel
cylinder decreases as a result. The brake fluid in the reservoir is pumped back into the master cyl-
inder.
NOTE:
For simplicity of explanation, operation of the hydraulic control unit is represented by operation of
a single wheel circuit.
VDC-10