Vehicle dynamic control (vdc) system -48 – NISSAN 2012 GT R - Owner's Manual User Manual

Page 241

Advertising
background image

Black plate (244,1)

R35-D EDITED: 2011/ 2/ 4

5-48

Starting and driving

or reverse. When the self-test occurs, you may
hear a “clunk” noise and/or feel a pulsation in the
brake pedal. This does not indicate that there is
a malfunction. If the computer senses a mal-
function, it switches the ABS off and illuminates
the ABS warning light on the instrument panel.
The brake system then operates normally, but
without anti-lock assistance.

If the ABS warning light illuminates during the
self-test or while driving, have the vehicle
checked by a GT-R certified NISSAN dealer.

Normal operation

The ABS operates at speeds above 3 to 6 MPH
(5 to 10 km/h). The speed varies according to
road conditions.

When the ABS senses that one or more wheels
are close to locking up, the actuator rapidly
applies and releases hydraulic pressure. This
action is similar to pumping the brakes very
quickly. You may feel a pulsation in the brake
pedal and hear a noise from under the hood or
feel a vibration from the actuator when it is
operating. This is normal and indicates that the
ABS is operating properly. However, the pulsa-
tion may indicate that road conditions are
hazardous and extra care is required while
driving.

The Vehicle Dynamic Control (VDC) system
uses various sensors to monitor driver inputs
and vehicle motion. Under certain driving con-
ditions, the VDC system helps to perform the
following functions.
. Controls brake pressure to reduce wheel

slip on one slipping drive wheel so power is
transferred to a non slipping drive wheel on
the same axle.

. Controls brake pressure and engine output

to reduce drive wheel slip based on vehicle
speed (traction control function).

. Controls brake pressure at individual wheels

and engine output to help the driver maintain
control of the vehicle in the following
conditions:
— understeer (vehicle tends to not follow

the steered path despite increased
steering input)

— oversteer (vehicle tends to spin due to

certain road or driving conditions).

The VDC system can help the driver to maintain
control of the vehicle, but it cannot prevent loss
of vehicle control in all driving situations.
When the VDC system operates, the VDC
warning light

in the instrument panel flashes

so note the following:

. The road may be slippery or the system may

determine some action is required to help
keep the vehicle on the steered path.

. You may feel a pulsation in the brake pedal

and hear a noise or vibration from under the
hood. This is normal and indicates that the
VDC system is working properly.

. Adjust your speed and driving to the road

conditions.

. The VDC mode can be changed using the

VDC setup switch. (

“VDC, transmis-

sion and suspension setup switches” page
5-24)

(

“Vehicle Dynamic Control (VDC) warning

light” page 2-30,

“Vehicle Dynamic Con-

trol (VDC) off indicator light” page 2-31)
If a malfunction occurs in the system, the VDC
warning light

illuminates in the instrument

panel. The VDC system automatically turns off.
The VDC setup switch is used to turn off the
VDC system. The VDC off indicator
illuminates to indicate the VDC system is off.
When the VDC setup switch is used to turn off
the system, the VDC system still operates to
prevent one drive wheel from slipping by
transferring power to a non slipping drive wheel.
The VDC warning light

flashes if this

occurs. All other VDC functions are off and the

VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM

Advertising