9-5 Linear Sport Wagon (9600) L4-2.3L Turbo (B235) (2002)
Hydraulic Control Assembly - Antilock Brakes: Description and Operation
TC/ABS 5.3
Description
Hydraulic Unit
Manufacturer:
BoschTC/ABS 5.3
Solenoid Valves ABS:
8 pcs. (4 inlet and 4 outlet valves)
Solenoid Valves TCS:
4 pcs. (2 pressure increase and 2 pressure relief valves)
Return pump:
Eccentric-plunger pump
Return Pump Maximum pressure:
250 bar
NOTE: The hydraulic unit is integrated with the control module.
Operation
The control module is integrated into the TC/ABS unit and has a 31-pin connector.
A wheel sensor at each wheel sends a wheel-speed signal to the control module.
The ABS works in such a way that the solenoid valves (inlet and outlet valves) and return pump modulate the hydraulic brake pressure when any of
the wheels is retarded more than the others. The pressure can either be maintained at a constant level or can be reduced so that maximum braking