Antilock Brake System - Mazda RX-8 2004 Service Highlights

04-13 ANTILOCK BRAKE SYSTEM
ABS OUTLINE. . . . . . . . . . . . . . . . . . . . . 04-13-1
ABS STRUCTURAL VIEW . . . . . . . . . . . 04-13-1
ABS SYSTEM WIRING DIAGRAM . . . . . 04-13-2
ABS HU/CM CONSTRUCTION. . . . . . . . 04-13-3
ABS HU PART FUNCTION . . . . . . . . . . . 04-13-3
ABS HU PART CONSTRUCTION/
OPERATION . . . . . . . . . . . . . . . . . . . . . 04-13-3
Structure . . . . . . . . . . . . . . . . . . . . . . . 04-13-3
Operating . . . . . . . . . . . . . . . . . . . . . . . 04-13-4
ABS CM PART FUNCTION. . . . . . . . . . . 04-13-6
Function Table . . . . . . . . . . . . . . . . . . . 04-13-6
ABS CONTROL OUTLINE . . . . . . . . . . . 04-13-6
Block Diagram . . . . . . . . . . . . . . . . . . . 04-13-6
ABS CONTROL OPERATION . . . . . . . . 04-13-7
Operating Condition Transition
Diagram . . . . . . . . . . . . . . . . . . . . . . . 04-13-7
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ABS OUTLINE
• The ABS HU/CM, integrating both the hydraulic unit (HU) and control module (CM), has been adopted,
resulting in size and weight reduction.
• A front wheel hub component with an integrated front ABS wheel-speed sensor has been adopted for improved
reliability and size and weight reduction.
• Electronic brakeforce distribution (EBD) control has been adopted, resulting in improved safety and handling
stability.
End Of Sie
ABS STRUCTURAL VIEW
ABS WARNING LIGHT
ABS HU/CM
FRONT ABS WHEEL-SPEED SENSOR/
ABS SENSOR ROTOR
End Of Sie

ANTILOCK BRAKE SYSTEM

BRAKE SYSTEM
WARNING LIGHT
EBD CONTROL OUTLINE . . . . . . . . . . . . 04-13-8
Features . . . . . . . . . . . . . . . . . . . . . . . . 04-13-8
Block Diagram. . . . . . . . . . . . . . . . . . . . 04-13-8
EBD CONTROL OPERATION . . . . . . . . . 04-13-8
Operating Condition Transition
Diagram. . . . . . . . . . . . . . . . . . . . . . . . 04-13-9
CONTROLLER AREA NETWORK (CAN)
OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . 04-13-9
Data sent. . . . . . . . . . . . . . . . . . . . . . . . 04-13-9
Data received . . . . . . . . . . . . . . . . . . . . 04-13-9
ABS WHEEL-SPEED SENSOR
FUNCTION . . . . . . . . . . . . . . . . . . . . . . . 04-13-10
ABS WHEEL-SPEED SENSOR
CONSTRUCTION/OPERATION . . . . . . . 04-13-10
Structure . . . . . . . . . . . . . . . . . . . . . . . . 04-13-10
Operation . . . . . . . . . . . . . . . . . . . . . . . 04-13-10
REAR ABS SENSOR ROTOR
CHU041343000S01
CHU041343000S02
REAR ABS
WHEEL-SPEED SENSOR
CHU0413S001
04-13-1
04-13