Mazda 2007 CX-9, Service Highlights

Page: 206 / 614

DYNAMIC STABILITY CONTROL/ROLL STABILITY CONTROL
04-18–18
ABS CONTROL OUTLINE
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•
Antilock brake system (ABS) control occurs when wheel slip is determined by the roll stability control (RSC)
control module (CM) (based on the four ABS wheel-speed sensors). Then, the dynamic stability control (DSC)/
RSC hydraulic unit (HU) inlet and outlet solenoid valves are operated and brake fluid pressure is controlled
accordingly to prevent wheel lock-up.
•
Use of ABS control during emergency braking or on slippery road surfaces allows directional stability to be
maintained, steerability ensured and stopping distance to be reduced.
•
The ABS control system has independent front wheel control and unified control (select low) for the rear
wheels.
Note
•
Select low control: A control system in which the left and right vehicle wheel speeds are compared and
brake fluid pressure is controlled according to the wheel most likely to lock-up.
Block Diagram
End Of Sie
ABS WHEEL-SPEED
SENSOR (LF)
ABS WHEEL-SPEED
SENSOR (RF)
ABS WHEEL-SPEED
SENSOR (LR)
ABS WHEEL-SPEED
SENSOR (RR)
DSC/RSC HU/CM
CM
CPU
HU
SOLENOID
VALVE
PUMP
MOTOR
CALIPER PISTON (LF)
CALIPER PISTON (RF)
CALIPER PISTON (LR)
CALIPER PISTON (RR)
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