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

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TCS CONTROL OUTLINE

! 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
ABS WHEEL-SPEED
SENSOR (LF)
ABS WHEEL-SPEED
SENSOR (RF)
ABS WHEEL-SPEED
SENSOR (LR)
ABS WHEEL-SPEED
SENSOR (RR)
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ABS WHEEL-SPEED SENSOR AND ABS SENSOR ROTOR FUNCTION

NG: FRONT ABS WHEEL-SPEED SENSOR
! 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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04-15–10
DYNAMIC STABILITY CONTROL
DSC HU/CM
CM
CPU
STEERING ANGLE COMBINED
SENSOR SENSOR
HU
SOLENOID
VALVE
PUMP
MOTOR
BRAKE FLUID
PRESSURE
SENSOR
id041500101300
CALIPER PISTON
(LR)
CALIPER PISTON
(RR)
PCM
ar8uun00000040
id041500102800