Brake Limited Slip Differential (BLSD) Function

SYSTEM

BRAKE LIMITED SLIP DIFFERENTIAL (BLSD) FUNCTION : 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, brake limited slip differential (BLSD) function, brake assist function and Brake force distribution function. The vehicle status becomes the same as models without VDC function, TCS function, brake limited slip differential (BLSD) function, brake assist function and
Brake force distribution function. However, ABS function and EBD function are operated normally. Refer to
Fail Safe.

SYSTEM DIAGRAM







INPUT SIGNAL AND OUTPUT SIGNAL

Major signal transmission between each unit via communication lines is shown in the following table.





*1: Communication line between yaw rate/side/decel G sensor and ABS actuator and electric unit (control unit)
*2: Communication line between electrically-driven intelligent brake unit and ABS actuator and electric unit (control unit)