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Nissan GT-R. Manual - part 325

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

WT-5

< SYMPTOM DIAGNOSIS >

SYMPTOM DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000009161163

Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.

: Applicable

Reference

—

—

NVH in DLN section.

NVH in F

AX and FSU sections.

NVH

RAX and RSU sections.

fer t

IRES i

is cha

rt.

r to

ROAD WHEEL

is ch

art

NVH i

AX,

X section.

NVH in BR section.

H i

ST se

ctio

Possible cause and SUSPECTED PARTS

Imp

rop

er i

lla

Out

-of-ro

lan

Incorrect t

ire

pressure

Uneven tire

wear

Def

ati

n-u

ormi

rrec

t t

ire

PROPELLER S

AFT

DIFF

ERENTIAL

FRONT A

AND FRONT SUSPE

NSION

REAR A

AND REAR SUSPE

NSION

ROAD WHEE

DRIVE SHAFT

BRAKE

STE

RING

Symptom

TIRES

Noise

Shake

Vibration

Shimmy

Judder

Poor quality ride
or handling

ROAD
WHEEL

Noise

Shake

Shimmy, Judder

Poor quality ride
or handling

WT-6

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Working Range at a Regular Dealership

INFOID:0000000009189411

CAUTION:

The service items unmentioned on this manual are recommended to be performed by a GT-R certified
NISSAN dealer. Because those service items require special equipment and a GT-R certified technical
staff who completed special training.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000009161164

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions Necessary for Steering Wheel Rotation After Battery Disconnection

INFOID:0000000009161165

CAUTION:

Comply with the following cautions to prevent any error and malfunction.
• Before removing and installing any control units, first turn the ignition switch to the LOCK position,

then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect

both battery cables.

• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing

work. If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

Connect both battery cables.

PRECAUTIONS

WT-7

< PRECAUTION >

NOTE:
Supply power using jumper cables if battery is discharged.

Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

Perform the necessary repair operation.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)

Perform self-diagnosis check of all control units using CONSULT.

Precaution for Battery Service

INFOID:0000000009161166

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

Service Notice and Precautions

INFOID:0000000009161167

CAUTIONS

• GT-R Genuine road wheel is designed for each type of vehicle. Use it on the specified vehicle only.
• Use Genuine NISSAN parts for the wheel nuts and wheel lock nuts.
• If tire wear is uneven, explain the circumstances to the customer and obtain the customers approval, then

adjust the wheel alignment. Refer to

FSU-7, "Inspection"

(Front),

RSU-5, "Inspection"

(Rear).

• When changing the tires, please recommend the users to change all 4 tires as a set, and always perform ID

registration.

• Low tire pressure warning lamp blinks for 1min, then turns ON when occurring any malfunction except low

tire pressure. Delete the memory with CONSULT, or register the ID to turn low tire pressure warning lamp
OFF.

• The paint of road wheels and the center cap has a special hue. Since time degradation causes change in

hue and wheels exhibit a wide range of color variation, the color of a replacement wheel may be different.

• When a vehicle is brought in vibration condition, it is necessary to check with the customer for the history of

hitting protruding portions and dents, such as road projections, and to check for wheel balance and squeaks
occurring from the inside of tires. If there is a malfunction, the tire must be replaced.

• For winter tires, use run flat tires recommended by NISSAN dealer.
• Check to use the specific tires for GT-R. The damages or failures resulting from the use of tires other than

specified tires for GT-R cannot be covered by warranty. Refer to the following table for the details of applica-
ble tires.

Tire

: Applicable as a standard or option (covered by warranty)

: Suitable (covered by warranty) –: Not applicable (Not covered by warranty)

*1: GT-R specified tire recommended by GT-R certified NISSAN dealer.
*2: The specification of the BRIDGESTONE POTENZA RE070R tire has been modified since this vehicle.
(No modifications are applied to the DUNLOP SP SPORT 600 DSST tire.)
Use tires (marked with “R2” mark) specified for this vehicle (VIN: From R35-020001) when replacing the
BRIDGESTONE POTENZA RE070R tire.
Note that tires (not marked with “R2” mark) that were manufactured before December 2009 cannot be used.
NOTE:
The BRIDGESTONE POTENZA RE070R tire (marked with “R2” mark) can be used, for manufactured
before December 2009 vehicle (VIN: Up to R35-019999).

Summer tire

All-season tire

Winter tire

DUNLOP

SP SPORT

MAXX GT 600

DSST CTT

DUNLOP

SP SPORT 600

DSST

BRIDGESTONE

POTENZA

RE070R

(Without “R2”

mark

)

BRIDGESTONE

POTENZA

RE070R

(With “R2”

mark

)

DUNLOP

SP SPORT

7010

DUNLOP

GRASPIC DSX

BRIDGESTONE

BLIZZAK

LM-25

–

WT-8

< PRECAUTION >

PRECAUTIONS

*3: The “R2” mark is inscribed on the tire sidewall as shown by (A)
in the figure.

Road wheel

: Applicable as a standard or option (covered by warranty)

: Suitable (covered by warranty) –: Not applicable (Not covered by warranty)

CAUTIONS FOR REMOVAL AND INSTALLATION

• Always use them after adjusting the wheel balance. For the balance weights, use GT-R Genuine road wheel

weights.

• Be careful of the oil that contacts bolt and nut threads, or the nut seat.
• Never use power tools when working with the lock nuts.
• When tightening the wheel nuts, tighten when the wheel is cold and tighten to the specified torque.
• When installing road wheels onto the vehicle, always wipe off any dirt or foreign substances to prevent them

from being trapped between the contact surfaces of the disk rotor and wheel.

• When assembling the tire and wheel assembly, if the red mark on the tire sidewall is identifiable, tighten the

wheel nuts so that the red mark faces up.

• When installing or removing the road wheels to from the vehicle, be careful of scratches due to contact

between the road wheels and the hub bolts, brake calipers, disk rotors, brake tubes, brake hoses, or other
parts.

• Replace grommet seal of transmitter in TPMS, when replacing each tire by reaching the wear limit.
• GT-R-specific wheels have a large diameter and a wide rim width. This may cause deformation in rim if the

rim gets a strong impact with no tire installed. Even a minute deformation may result in a fatigue fracture.
Therefore, always check rim runout after an impact even when no deformation is apparently found.

• ID registration is required after the replacement of tires, transmitter, or low tire pressure warning control unit.
• To put the valve cap back on the transmitter, securely turn the valve cap by hand. Never use a tool to prevent

damage to the valve cap.

• Handle road wheel and center cap with care to prevent scratches on their paint. The scratches become

noticeable, if any.

CAUTIONS FOR CAR WASH

• Use caution when handling the road wheels, because they can be easily scratched. When removing dirt, do

not use any abrasives, a wire brush, or other items that may scratch the coating. Use a neutral detergent if a
detergent is needed.

• Never wash wheels in a high-speed car washing machine.
• After driving on roads scattered with anti-icing salts, wash off the wheels completely.
• Rewash the back of wheels when removing wheels for replacement of tires or when cleaning the underbody

of the vehicle.

CAUTIONS FOR DRIVING

• Never run over sharp objects, and never run over or rub against sidewalks or curbstones while driving.
• Only if a snapping sound is heard from the road wheel when driving while the road wheel is cold, clean the

surfaces where the road wheel and disk rotor contact each other and tighten them (when cold) to a wheel
nut tightening torque of 147.1 N·m (15 kg-m, 109 ft-lb).

CAUTIONS FOR TIRE PRESSURE

JPEIC0067ZZ

Grade

Road wheel

GT-R specified

road wheel

(10 spoke wheels)

GT-R specified

road wheel

(6 spoke wheels)

Except for GT-R

road wheel

GT-R Premium edition

–

GT-R Black edition

–

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