TCS Functions
NHBR0256S04
1.
With the wheel speed sensor signals from 4 wheels, the VDC/
TCS/ABS control unit detects a wheel spin. If a wheel spins,
the control unit controls brake fluid pressure to the spinning
wheel, and cuts the fuel to the engine. It also closes the throttle
valve to reduce the engine torque. Furthermore, throttle posi-
tion is controlled to the appropriate engine torque.
2.
During TCS operation, it informs a driver of system operation
by flashing SLIP indicator lamp.
CAUTION:
I
During TCS operation, the body and the brake pedal
lightly vibrate and the mechanical noise may be heard.
This is a normal condition.
I
Depending on road circumstances, the driver may have a
sluggish feel. This is not abnormal, because the optimum
traction has the highest priority by TCS operation.
I
When the vehicle is passing through a road where the
surface
friction
coefficient
varies,
downshifting
or
depressing the accelerator pedal fully may activate TCS
temporarily.
VDC Functions
NHBR0256S05
1.
In addition to the ABS/TCS function, VDC detects the driver’s
steering operation amount and brake operation amount from
the steering angle sensor and pressure sensor. Using the infor-
mation from the yaw rate/side G sensor and wheel speed
sensors, VDC judges the driving condition (conditions of
understeer and oversteer) to improve the stability by control-
ling the brake on 4 wheels and engine output.
2.
During VDC operation, the SLIP indicator lamp flashes to
inform the driver of the operation.
CAUTION:
I
During VDC operation, the body and the brake pedal
lightly vibrate and their mechanical noise may be heard.
This is a normal condition.
I
If the vehicle is rotated on a turn table, or rolled and
rocked on a ship, the ABS warning lamp, VDC OFF indica-
tor lamp, and SLIP indicator lamp may turn ON. In this
case, start the engine on a normal road again. If the ABS
warning lamp, VDC OFF indicator lamp, and SLIP indica-
tor lamp turn OFF after the restart, it is normal.
I
When driving in a steep slope such as a bank, the ABS
warning lamp, VDC OFF indicator lamp, and SLIP indica-
tor lamp may turn ON. In this case, start the engine on a
normal road again. If the ABS warning lamp, VDC OFF
indicator lamp, and SLIP indicator lamp turn OFF after the
restart, it is normal.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
GENERAL INFORMATION
VDC
TCS Functions
BR-97