Toyota Camry Hybrid AHV40 Manual page 156

c. Holding
The skid control ECU calculates the target wheel cylinder pressure (equivalent to the brake force
required by the driver) in accordance with the signals received from the master cylinder pressure sensor
and the brake pedal stroke sensor.
The skid control ECU compares the wheel cylinder pressure signal with the target wheel cylinder
pressure. If they are equal, the skid control ECU controls the brake actuator in the hold state.
Accordingly, the wheel cylinder will be held at a constant pressure.
Brake Pedal
Stroke Simulator
Accumulator
Pump
Accumulator
Pressure Sensor
Port (C)
(3)
Port (G)
(7)
Front Left
Master Cylinder Cut Solenoid Valve
(1), (2) (1) (2)
Port: (A), (B)
Pressure Appliance Solenoid Valve
(3), (4), (3), (4),
(5), (6)
Port: (C), (D), (E), (F)
Pressure Reduction Solenoid Valve
(7), (9) (7) (9)
Port: (G), (I)
Pressure Reduction Solenoid Valve
(8), (10) (8) (10)
Port: (H), (J)
Stroke Simulator Cut Solenoid Valve
(11) (11)
Port: (K)
CHASSIS - BRAKE
(11)
Port (K)
Port (A)
(1)
Port (D)
(4)
Port (H)
Port (I)
(8)
Wheel
Cylinder
Pressure
Sensor
Rear Left
Item
(2)
Port (E)
(5)
Port (J)
(9) (10)
Wheel
Cylinder
Pressure
Sensor
Front Right
Normal Braking
Holding Mode
ON (Close) ON (Close)
OFF (Close) OFF (Close)
OFF (Close) OFF (Close)
ON (Close) ON (Close)
ON (Open) ON (Open)
CH-55
Master
Cylinder
Pressure
Sensor
Port (B)
Port (F)
(6)
Rear Right
256CH109