System Description
- LH and RH driving wheel spin is always monitored. If necessary, appropriate brake force is independently applied to LH or RH driving wheel so that one-sided wheel spin is avoided and traction is maintained. Mainly starting ability is improved.
- Brake limited slip differential (BLSD) function operates while VDC function is in non-operational status (OFF) by VDC OFF switch.
- VDC warning lamp blinking while brake limited slip differential (BLSD) function is in operation and indicates to the driver that the function is in operation.
- Slight vibrations are felt on the brake pedal and the operation noises occur, when brake limited slip differential (BLSD) function operates. This is not a malfunction because it is caused by brake limited slip differential (BLSD) function that is normally operated.
- Fail-safe function is adopted. When a malfunction occurs in brake limited slip differential (BLSD) function, the control is suspended for VDC function, TCS function, hill start assist function and brake limited slip differential (BLSD) function. The vehicle status becomes the same as models without VDC function, TCS function, hill start assist function and brake limited slip differential (BLSD) function. However, ABS function and EBD function are operated normally. Refer to Fail-safe .
SYSTEM DIAGRAM
NOTE:
Transfer control unit is applied to models with 4WD system.
INPUT SIGNAL AND OUTPUT SIGNAL
Major signal transmission between each unit via communication lines is shown in the following table:
| Component | Signal description |
|---|---|
| Yaw rate/side/decel G sensor | Mainly transmits the following signals to ABS actuator and electric unit (control unit) via communication line*1:
|
| ECM | Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication:
Mainly receives the target throttle position signal from ABS actuator and electric unit (control unit) via CAN communication. |
| TCM | Mainly transmits the shift position signal to ABS actuator and electric unit (control unit) via CAN communication. |
| Transfer control unit *2 | Mainly transmits the current 4WD mode signal to ABS actuator and electric unit (control unit) via CAN communication. |
| Steering angle sensor | Mainly transmits the steering angle sensor signal to ABS actuator and electric unit (control unit) via CAN communication. |
| Combination meter | Mainly receives the VDC warning lamp signal from ABS actuator and electric unit (control unit) via CAN communication. |
*1: Communication line between yaw rate/side/decal G sensor and ABS actuator and electric unit (control unit)
*2: Models with 4WD system