Subaru 2002 Impreza Service Manual page 316

ANTI-LOCK BRAKE SYSTEM (ABS)
ABS
1. DURING NORMAL BRAKING (ABS NOT ACTIVE)
Both the inlet and outlet solenoid valves are not energized.
This means that the inlet port of the inlet solenoid valve is open, whereas the outlet port of the outlet
solenoid valve is closed. So the fluid pressure generated in the master cylinder is transmitted to
the wheel cylinder, producing a brake force.
NOTE:
For simplicity of explanation, operation of the hydraulic control unit is represented by operation
of a single wheel circuit.
ABS-1 0