9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Chamber 2: Dynamic Circuit (To High Pressure Pump)
Chamber 3: Dynamic Circuit (From Servo Cylinder)
Flow Rate, Filter
Liters/Minute: 0.50
Resistance:
Level Warning Switch, Ohms: 10 (Float At Bottom)
Antilock Brake System (ABS) Warning Switch, Ohms: 1 (Float At Top)
The brake fluid reservoir is divided into three chambers:
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One chamber for the master cylinder feeding the front-wheel circuits
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One chamber for the high-pressure pump feeding the rear-wheel circuit and servo cylinder
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One chamber for the clutch cylinder (cars with manual gearbox only).
These chambers have a safety function. In the event of leakage in the front wheel circuits the brake fluid reservoir will always retain a sufficient amount
of fluid for the rear wheel circuit so that the rear wheels can be braked. In the event of leakage in the rear wheel circuit the front wheels can be braked,
although without servo assistance and consequently requiring higher pedal pressure.
The return flow from the valve block, servo cylinder and master cylinder goes to the second chamber so that movement of the brake fluid is damped.
This prevents brake fluid mixed with air bubbles from being sucked into the brake system.
The brake fluid reservoir holds about 0.8 liters and has MIN and MAX marks to indicate the fluid level. The reservoir is mounted beside the hydraulic
unit and is connected to it via two "push-in" rubber bushes. A hose for feeding the high-pressure pump is also connected to the reservoir. The filter in the
reservoir cannot be changed separately.
A level switch is mounted in the reservoir. If the fluid level drops too low a warning lamp first lights up. If the fluid level drops still further, this will be
registered by the control module which disconnects the ABS and switches the ABS warning lamp on.
