Mazda RX-8 2004 - Dynamic Stability Control (Dsc) Construction; Dynamic Stability Control (Dsc) Structural View

DYNAMIC STABILITY CONTROL
04–15–3
04–15
DYNAMIC STABILITY CONTROL (DSC) STRUCTURAL VIEW
CHU041543000S02
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DYNAMIC STABILITY CONTROL (DSC) CONSTRUCTION
CHU041543000S03
• The DSC system consists of the following parts. While each part has a regular function in other systems, only
the function during DSC control is listed.
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FRONT ABS WHEEL-SPEED SENSOR/
ABS SENSOR ROTOR
REAR ABS
WHEEL-SPEED SENSOR
REAR ABS SENSOR ROTOR
ABS WARNING
LIGHT
BRAKE SYSTEM
WARNING LIGHT
DSC INDICATOR LIGHT
DSC HU/CM
STEERING ANGLE
SENSOR
DSC OFF LIGHT
DSC OFF SWITCH
COMBINED
SENSOR
BRAKE FLUID
PRESSURE SENSOR
TCM
PCM
CHU0415S002
Part name Function
DSC HU/CM
• Makes calculations using input signals from each sensor, controls brake fluid pressure
to each wheel, and actuates each function (ABS, EBD, TCS and DSC) of the DSC
system.
• Outputs the vehicle speed signal to the car-navigation unit.
• Outputs the torque reduction request signal, vehicle speed signal and DSC system
warning control data via CAN lines.
• Controls the on-board diagnostic system and fail-safe function when there is a
malfunction in the DSC system.
PCM
• Controls engine output based on signals from the DSC HU/CM.
• Transmits engine speed, tire and shift position data via CAN communication to the
DSC HU/CM.
TCM (AT)
• Transmits gear/selector lever target position data via CAN communication to the DSC
HU/CM.
DSC indicator light
• Informs the driver that the DSC is operating (vehicle sideslip occurring).
• Informs the driver that the TCS is operating (drive wheel is spinning).
DSC OFF switch • Transmits driver intention to release DSC control to the DSC HU/CM.
DSC OFF light • Informs driver that DSC control has been released due to DSC OFF switch operation.
Wheel speed sensor • Detects the rotation condition of each wheel and transmits it to the DSC HU/CM.
Combined sensor
• Detects the lateral-G (vehicle speed increase) and the yaw rate (vehicle turning angle)
of the vehicle and transmits them to the DSC HU/CM.
Brake fluid pressure sensor • Detects the fluid pressure from the master cylinder and transmits it to the DSC HU/CM.
Steering angle sensor
• Transmits the steering angle and steering angle sensor condition via CAN lines to the
DSC HU/CM.