GENERAL INFORMATION

The ABS (with EBD) that ensures directional stability and controllability during hard braking has been equipped as a standard.
This ABS uses a 4-sensor system that controls all four wheels independently of each other, and has the following features:

EBD ^*1 (Electronic Brake-force Distribution system) control that can obtain ideal rear wheel brake force has been employed.
The magnetic encoder for detecting the wheel speed has been installed instead of the rotor as the wheel speed sensor.
For wiring harness saving and secure data communication, CAN ^*2 bus has been adopted as a tool of communication with other ECUs.
The ESS^*3 (Emergency stop signal system), which makes the hazard warning lamps flash quickly when the brake is applied suddenly, has been adopted.

note

^*1: EBD (Electronic Brake-force Distribution)
^*2: For more details about CAN (Controller Area Network), refer to GROUP 54C - General Information .
^*3: ESS, refer to .

SPECIFICATIONS

Item			Specification
ABS control type			4 sensors
Wheel speed sensor	Magnetic encoder	Front	86 (N pole: 43, S pole: 43)
		Rear	86 (N pole: 43, S pole: 43)
	Type		Semiconductor

CONSTRUCTION DIAGRAM

MAIN COMPONENTS AND FUNCTIONS

Name of part		Number	Outline of function
Sensor	Wheel speed sensor	1	Outputs the frequency signal in proportion to the rotation speed of each wheel to ABS-ECU.
	Magnetic encoder for wheel speed detection	2	When the magnetic encoder for wheel speed detection (a plate on which north and south pole sides of the magnets are arranged alternately) rotates, the wheel speed sensor outputs frequency pulse signal in proportion to each wheel speed.
	Stop lamp switch	3	Outputs the signal indicating whether the brake pedal is depressed or not to ABS-ECU.
Actuator	Hydraulic unit	4	Drives the solenoid valve using the signal from ABS-ECU, and controls the brake fluid pressure for each wheel.
	ABS warning lamp	5	Informs the driver of the system status by illuminating, flashing, or turning off the warning lamp according to the signal from ABS-ECU.
	Brake warning lamp	6	Used as the warning lamp for the parking brake, brake fluid level, and EBD control. Informs the driver of the system status by illuminating or turning off the warning lamp according to the signal from ABS-ECU.
Diagnosis connector		7	Outputs the diagnosis code and establishes the communication with M.U.T-III.
ABS control unit (ABS-ECU)		8	Controls actuators (described above) based on the signals coming from each sensor.
			Controls the self-diagnosis and fail-safe functions.
			Controls the diagnosis function (M.U.T-III compatible).

SYSTEM CONFIGURATION

note

Dashed lines indicate the CAN bus communication lines.
^*: Engine Automated Manual Transmission Electronic Control Unit

GENERAL INFORMATION

SPECIFICATIONS

SYSTEM CONFIGURATION

ABS ELECTRICAL DIAGRAM