GENERAL INFORMATION
FEATURES
- EBD (Electronic Brake-force Distribution system) control has been added to
provide the ideal braking force for the rear wheels.
- Fail-safe function which ensures that safety is maintained
| note | *: For more information about CAN (Controller Area Network), refer
to GROUP 54C, General Information  . |
EBD CONTROL
- Because the system provides the optimum rear wheel braking force regardless
of vehicle load condition and the condition of the road surface, the system reduces the required
pedal depression force, particularly when the vehicle is heavily loaded or driven on road surfaces
with high frictional coefficients.
- Because the duty placed on the front brakes is reduced, the increase in pad temperature
can be controlled during brakes application to improve the wear resistance characteristics of
the pad.
- Control valves such as the proportioning valve are not required.
SPECIFICATIONS
| Item |
Specification |
||
| ABS control method |
4-sensor |
||
| No. of ABS rotor teeth |
Front |
47 |
|
| Rear |
47 |
||
| Wheel speed sensor |
Type |
Magnet coil type |
|
| Gap between sensor and rotor mm |
Front (Non-adjustable type) |
0.25 - 1.40 |
|
| Rear (Non-adjustable type) |
0.18 - 0.92 |
||
CONSTRUCTION DIAGRAM
| Name of part |
Number |
Outline of function |
|
| Sensor |
Wheel speed sensor |
1 |
Send alternating current signals at frequencies which are proportional
to the rotation speeds of each wheel to the ABS-ECU. |
| Stoplamp switch |
2 |
Sends a signal to the ABS-ECU to indicate whether the brake pedal
is depressed or not. |
|
| G-sensor <4WD> |
3 |
Detects acceleration in the travel direction of the vehicle and sends
a signal that is converted to a voltage value to the ABS-ECU. |
|
| Actuator |
Hydraulic unit |
4 |
Drives the solenoid valves according to signals from the ABS-ECU
in order to control the brake hydraulic pressure for each wheel. |
| ABS warning lamp |
5 |
Illuminates in response to signals from the ABS-ECU when a problem
develops in the system. |
|
| Brake warning lamp |
6 |
Illuminates in response to signals from the ABS-ECU when a malfunction
happens in the system. |
|
| Diagnosis connector |
7 |
Outputs the diagnosis codes and allows communication with the M.U.T.-III. |
|
| ABS-ECU |
8 |
Controls actuators (described above) based on the signals coming
from each sensor. |
|
| Controls the self-diagnosis and fail-safe functions. |
|||
SYSTEM CONFIGURATION DIAGRAM
| note | Broken lines show CAN-bus line. |
ABS ELECTRICAL CIRCUIT DIAGRAM
