brake sensor NISSAN GT-R 2015 R35 Owners Manual

GTR-22GT-R Overview
Suspension and wheel alignment
.Check the steering and sus�fension system
and other �binks for �boose and/or damaged
�farts.
. Measure and adjust the whee�b a�bignment.
Contact a GT-R certified NISSAN dea�ber to
adjust the whee�b a�bignment to the recom-
mended setting for norma�b driving.
Wheels and tires
.Check tire wear and cracking.
. Ins�fect the tire side wa�b�b for damage.
. Check the tire �fressure and adjust the
�fressure as necessary when the tires are
co�bd. (
“Whee�bs and tires” �fage GTR-
16) If you do not drive under the conditions
�bisted in this section, see
“Whee�bs and
tires” �fage 8-32.
. Check that the whee�b nuts are not stri�f�fed.
Check if there is no deformation on the
contact surface of the whee�b nuts.
. Make sure the whee�b nuts are tight.
(
“Whee�bs and tires” �fage 8-32)
. Make sure the drive shaft nuts are tight.
. Check whee�b hub run out and that the whee�b
rotates smooth�by without any friction. Check
these with the tires removed whenever an ins�fection is �ferformed with the vehic�be
jacked u�f.
. Make sure the tire has not s�bi�f�fed on the
whee�b causing the assemb�by to be out of
ba�bance. The reference marks on the tire and
whee�b shou�bd be a�bigned. If the reference
marks are not a�bigned, the tire has s�bi�f�fed on
the whee�b. Have the whee�bs/tires reba-
�banced. Make sure the o�bd reference marks
are erased and new reference marks are
a�f�f�bied to the whee�b and tire. When insta�b-
�bing new tires on the whee�bs, make sure new
reference marks are a�f�f�bied to the whee�bs
and tires. (
“Whee�bs and tires” �fage
GTR-16)
. Make sure that the TPMS sensor insta�b�bation
nuts and the sensor va�bve are tight and there
is no nitrogen �beak.
Brakes
.Check for the heat deterioration of the
brakes and �farts around the brakes.
. Check the condition of the brake �fads and
disc rotors and re�f�bace them as necessary.
Engine and powertrain
.Check the engine, transmission, differentia�b
and under the vehic�be for oi�b and coo�bant �beaks.
. Ins�fect the area surrounding the cata�bytic
converter for heat deterioration.
. Ins�fect and confirm the c�bearance between
the exhaust finisher and rear bum�fer is more
than 0.24 in (6 mm) (u�f/down) and more
than 0.20 in (5 mm) (�beft/right) .
. The c�butch c�bearance and shift fork �fosition
may need to be adjusted.
. Ins�fect the dust boot of the drive shaft
universa�b joint for cracks or damage.
. Check that there is no abnorma�b noise,
vibrations or warning �bights i�b�buminated when
making tight turns at s�bow s�feed (for tight
corner braking �fhenomenon) .

ANTI-LOCK BRAKING SYSTEM
(ABS)
WARNING
.The Anti-lock Braking System (ABS)
is a sophisticated device, but it
cannot prevent accidents resulting
from careless or dangerous driving
techniques. It can help maintain
vehicle control during braking on
slippery surfaces. Remember that
stopping distances on slippery sur-
faces will be longer than on normal
surfaces even with ABS. Stopping
distances may also be longer on
rough, gravel or snow covered
roads, or if you are using tire chains.
Always maintain a safe distance
from the vehicle in front of you.
Ultimately, the driver is responsible
for safety.
. Tire type and condition may also
affect braking effectiveness. When
replacing tires, install the specified
size of tires on all four wheels. The Anti-lock Braking Syste�f (ABS) controls
the brakes so the �bheels do not lock during hard
braking or �bhen braking on slippery surfaces.
The syste�f detects the rotation speed at each
�bheel and varies the brake fluid pressure to
prevent each �bheel fro�f locking and sliding. By
preventing each �bheel fro�f locking, the syste�f
helps the driver �faintain steering control and
helps to �fini�fize s�berving and spinning on
slippery surfaces.
Using the system
Depress the brake pedal and hold it do�bn.
Depress the brake pedal �bith fir�f steady
pressure, but do not pu�fp the brakes. The
ABS �bill operate to prevent the �bheels fro�f
locking up. Steer the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.
Self-test feature
The ABS includes electronic sensors, electric
pu�fps, hydraulic solenoids and a co�fputer. The
co�fputer has a built-in diagnostic feature that
tests the syste�f each ti�fe you start the engine and �fove the vehicle at a lo�b speed in for�bard
or reverse. When the self-test occurs, you �fay
hear a “clunk” noise and/or feel a pulsation in the
brake pedal. This does not indicate that there is
a �falfunction. If the co�fputer senses a �fal-
function, it s�bitches the ABS off and illu�finates
the ABS �barning light on the instru�fent panel.
The brake syste�f then operates nor�fally, but
�bithout anti-lock assistance.
If the ABS �barning light illu�finates during the
self-test or �bhile 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 k�f/h) . The speed varies according to
road conditions.
When the ABS senses that one or �fore �bheels
are close to locking up, the actuator rapidly
applies and releases hydraulic pressure. This
action is si�filar to pu�fping the brakes very
quickly. You �fay feel a pulsation in the brake
pedal and hear a noise fro�f under the hood or
feel a vibration fro�f the actuator �bhen it is
operating. This is nor�fal and indicates that the
ABS is operating properly. Ho�bever, the pulsa-
tion �fay indicate that road conditions are
hazardous and extra care is required �bhile
driving.
Starting and driving5-49
BRAKE ASSIST

5-50Starting and driving
The Vehicle Dynamic Control �fVDC) system
uses �barious sensors to monitor dri�ber inputs
and �behicle motion. Under certain dri�bing con-
ditions, the VDC system helps to perform the
following functions.
.Controls brake pressure to reduce wheel
slip on one slipping dri�be wheel so power is
transferred to a non slipping dri�be wheel on
the same axle.
. Controls brake pressure and engine output
to reduce dri�be wheel slip based on �behicle
speed �ftraction control function) .
. Controls brake pressure at indi�bidual wheels
and engine output to help the dri�ber maintain
control of the �behicle in the following
conditions:
— understeer �f�behicle tends to not follow
the steered path despite increased
steering input)
— o�bersteer �f�behicle tends to spin due to certain road or dri�bing conditions) .
The VDC system can help the dri�ber to maintain
control of the �behicle, but it cannot pre�bent loss
of �behicle control in all dri�bing 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 �behicle on the steered path.
. You may feel a pulsation in the brake pedal
and hear a noise or �bibration from under the
hood. This is normal and indicates that the
VDC system is working properly.
. Adjust your speed and dri�bing to the road
conditions.
. The VDC mode can be changed using the
VDC setup switch. �f
“VDC, transmis-
sion and suspension setup switches” page
5-25)
�f
“Vehicle Dynamic Control �fVDC) warning
light” page 2-31,“Vehicle Dynamic Con-
trol �fVDC) off indicator light” page 2-32)
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
pre�bent one dri�be wheel from slipping by
transferring power to a non slipping dri�be wheel.
The VDC warning light
flashes if this
occurs. All other VDC functions are off and the VDC warning light
will not flash. The VDC
system is automatically reset to on when the
ignition switch is placed in the off position then
back to the on position.
�f
“Vehicle Dynamic Control �fVDC) warning
light” page 2-31,“Vehicle Dynamic Con-
trol �fVDC) off indicator light” page 2-32)
The computer has a built-in diagnostic feature
that tests the system each time you start the
engine and mo�be the �behicle forward or in
re�berse at a slow speed. When the self-test
occurs, you may hear a “clunk” noise and/or feel
a pulsation in the brake pedal. This is normal and
is not an indication of a malfunction.
WARNING
. The VDC system is designed to help
the driver maintain stability but
does not prevent accidents due to
abrupt steering operation at high
speeds or by careless or dangerous
driving techniques. Reduce vehicle
speed and be especially careful
when driving and cornering on slip-
pery surfaces and always drive care-
fully.
. Do not modify the vehicle’s suspen-
sion. If suspension parts such as
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM