1-8
FEATURES
3. When the ABS ECU sends a signal to stop reducing the hydraulic pressure, the outlet solenoid valve
“2” closes and the brake fluid is pressurized again. The inlet solenoid valve “1” controls the hydraulic
pressure difference between the brake fluid in the upper brake lines (brake master cylinder side) and
the brake fluid in the lower brake lines (brake caliper side).
Buffer chamber
The buffer chamber accumulates the brake fluid that is depressurized while the ABS is operating.
ABS ECU
The ABS ECU is integrated with the hydraulic unit to achieve a compact and lightweight design.
As shown in the following block diagram, the ABS ECU receives wheel sensor signals from the front
and rear wheels and also receives signals from other monitor circuits.
3. Brake caliper
4. ABS motor
1. Buffer chamber (pressurizing phase)
2. Buffer chamber (depressurizing phase)
3. Raised piston
B9X-F8197-E0.book Page 8 Thursday, July 16, 2020 2:28 PM
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