9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT) (2003)
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Hydraulic Control Assembly - Antilock Brakes: Description and Operation
ABS 5.4
Hydraulic Unit
Hydraulic Unit
Manufacturer ............................................................................................................................................................................................. Bosch ABS 5.4
Number Of Solenoid Valves ........................................................................................................................................................... 8 (4 inlet and 4 outlet)
Return Pump ................................................................................................................................................................................ Eccentric Plunger Pump
Return Pump Maximum Pressure ........................................................................................................................................................................... 250 bar
Valve Block
Valve Block
ABS 5.4 Valve Block
The valve block, which is an integral part of the hydraulic unit, controls the brake pressure to the caliper assemblies during ABS-controlled braking.
The valve block contains eight electromagnetic valves: 4 inlet valves and 4 outlet valves, or 1 inlet and 1 outlet valve per wheel.
In the rest position, the inlet valve is open and the outlet valve closed.
