Mazda RX-8 2009 - Abs Wheel-Speed Sensor and Abs Sensor Rotor Function; Tcs Control Outline; Features

DYNAMIC STABILITY CONTROL
04-15–10
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TCS CONTROL OUTLINE
id041500101300
! TCS control actuates torque reduction through throttle, fuel cut and ignition timing control, as well as using
brake control to control traction.
Note
! Brake control: Brake fluid pressure from the hydraulic unit to the slipping driving wheel is increased,
operating the brake and preventing drive wheel slip.
Features
! The left and right wheels are controlled at the same time by throttle, fuel cut and ignition timing control.
Therefore, when the road surface friction coefficients differ between the left and right wheels, proper torque
reduction cannot be performed separately for each wheel. When this occurs, torque reduction is performed by
independent left and right wheel brake control, providing much stable vehicle control.
Block Diagram
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NG: FRONT ABS WHEEL- SPEED SENSOR
ABS WHEEL-SPEED SENSOR AND ABS SENSOR ROTOR FUNCTION
id041500102800
! The ABS wheel-speed sensor detects and transmits the rotation condition of each wheel to the DSC HU/CM.
! The signal from the ABS wheel-speed sensors is the primary signal for DSC HU/CM control.
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CPU
HU
PCM
ABS WHEEL-SPEED
SENSOR (LF)
CALIPER PIST
ON
(LR)
CALIPER PISTON
(RR)
CM
SOLENOID
VALVE
PUMP
MOTOR
DSC HU/CM
ABS WHEEL-SPEED
SENSOR (RF)
ABS WHEEL-SPEED
SENSOR (LR)
ABS WHEEL-SPEED
SENSOR (RR)
STEERING ANGLE
SENSOR
BRAKE FLUID
PRESSURE
SENSOR
COMBINED
SENSOR
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