Abs Control Outline; Block Diagram - Mazda 2006 MX-5 Service Highlights

ABS CONTROL OUTLINE

• ABS control occurs when wheel slip is determined by the ABS CM (based on the four ABS wheel-speed
sensors). Then, the ABS 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

ABS WHEEL-SPEED
SENSOR (LF)
ABS WHEEL-SPEED
SENSOR (RF)
ABS WHEEL-SPEED
SENSOR (LR)
ABS WHEEL-SPEED
SENSOR (RR)
End Of Sie
ANTILOCK BRAKE SYSTEM
ABS HU/CM
CM
SOLENOID
VALVE
CPU
PUMP
MOTOR
HU
CALIPER PISTON (LF)
CALIPER PISTON (RF)
CALIPER PISTON (LR)
CALIPER PISTON (RR)
E5U041343750N05
04–13
C3U0413S009
04–13–7