9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
TCS regulation is active.
The pressure relief valve is normally open but will close while pressure is built up and is being maintained and open again for pressure relief in order to
hold a certain pressure calculated by the control module to the relevant wheel while TCS modulation is active.
In the valve block are 2 check valves for the TCS. If the driver brakes while TCS modulation is in progress, TCS with brake application will cease and
the brake function will be selected. During the delay that may arise, the check valve that is located in parallel with the pressure relief valve will prevent
the brake function being affected by leading the brake pressure to the wheel.
1
Valve body
2
Motor
3
Pump
4
Inlet valve
5
Outlet valve
6
Pressure relief valve
7
Pressure increase valve
8
Pressure chamber
9
Accumulator chamber
Power supply, ground and bus communication