ANTILOCK BRAKE SYSTEM
04–13–8
ABS CONTROL OPERATION
E5U041343750N06
• When the ABS CM determines wheel slip conditions based on the signals from the ABS wheel-speed sensors
during braking, the ABS CM operates the ABS HU inlet and outlet solenoid valves, reducing and maintaining
brake fluid pressure in accordance with the wheel slip factors. Then, when the wheel slip condition has passed,
brake fluid pressure is increased and maintained, ensuring braking with a constantly stable brake force.
Operating Condition Transition Diagram
End Of Sie
EBD CONTROL OUTLINE
E5U041343750N07
• EBD control uses the ABS system to control brake fluid pressure distribution to the rear wheels so that they do
not lock-up prior to the front wheels during braking, thereby preventing the loss of handling stability.
Features
• EBD control has independent control systems for both the front and rear wheels.
• EBD control constantly and properly distributes brake fluid pressure regardless of vehicle weight.
0
0
ESTIMATED VEHICLE SPEED
WHEEL SPEED
SPEED
SOLENOID VALVE CONTROL
BRAKE FLUID
PRESSURE
PRESSURE REDUCTION
TIME
PRESSURE MAINTAINED
PRESSURE INCREASE
HIGH
HIGH
TIME
C3U0413S010
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