Infiniti QX56 (JA60). Manual — part 913

HEATED STEERING WHEEL

ST-11

< COMPONENT DIAGNOSIS >

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ABGIA0027GB

ST-12

< SYMPTOM DIAGNOSIS >

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

SYMPTOM DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000005147864

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

×: Applicable

Reference page

ST

-1

3,

"

Ch

ec

ki

ng

Fl

uid

L

ev

el

"

ST

-13, "

A

ir Bl

ee

din

g

Hyd

rau

lic

Sy

st

em

"

ST

-36

ST

-36

ST

-36

ST

-13

ST

-35

ST

-37

EM-13, "

Ch

ec

ki

ng Driv

e

Be

lts

"

ST

-35

ST

-35

ST

-37

ST

-35

ST

-20

ST

-37

DLN

-18

4,

"

NV

H T

rou

ble

shoo

ting Cha

rt

"

DLN

-20

8,

"

NV

H T

rou

ble

shoo

ting Cha

rt

"

F

AX-5, "

NVH T

rou

bl

es

ho

ot

in

g Cha

rt

"

FSU-5,

"

NVH T

ro

ub

les

h

oot

in

g Ch

art

"

WT

-43,

"

NVH T

ro

ub

les

ho

ot

ing

Ch

art

"

WT

-43,

"

NVH T

ro

ub

les

ho

ot

ing

Ch

art

"

F

AX-5, "

NVH T

rou

bl

es

ho

ot

in

g Cha

rt

"

BR-6, "

NVH T

ro

ub

les

ho

ot

ing

Ch

art

"

Possible cause and suspect-
ed parts

F

lui

d l

ev

el

Ai

r i

n

hy

dra

u

lic sy

st

em

O

u

ter

so

ck

et

ba

ll

joi

nt

swi

ng

ing

fo

rce

Ou

ter

so

cket

ba

ll

joi

nt

rot

ati

ng

torq

ue

O

u

ter

so

ck

et

ba

ll

joi

nt

en

d p

la

y

S

te

eri

ng

fl

ui

d

le

ak

ag

e

S

te

e

ring

whe

e

l pl

ay

S

te

e

ring

ge

ar rac

k sl

id

in

g fo

rce

Dri

ve

be

lt

loo

sen

es

s

Im

pro

p

er

st

ee

ring

wh

ee

l

Im

p

rop

er i

ns

tal

la

tio

n o

r lo

os

en

es

s of

til

t lo

ck

le

ve

r

M

ou

nt

ing

ru

bb

er d

et

erio

rat

ion

S

tee

rin

g c

o

lum

n

de

form

at

ion

o

r da

ma

ge

Im

p

rop

er i

ns

tal

la

tio

n o

r lo

os

en

es

s of

st

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ring

c

olu

m

n

S

te

eri

ng

li

nk

ag

e l

oo

se

ne

ss

P

R

OPE

LLE

R SHAFT

FRO

NT FINAL

DRIVE

W

H

EEL H

U

B

S

U

S

PENSION

TI

RE

S

ROAD W

H

EEL

DRIV

E SHAFT

BR

AK

E

S

Symptom

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

× ×

×

Shake

×

×

×

×

×

×

×

× ×

×

Vibration

×

×

×

×

×

×

×

×

×

×

Shimmy

×

×

×

×

×

×

×

×

×

Shudder

×

×

×

×

×

×

×

POWER STEERING FLUID

ST-13

< ON-VEHICLE MAINTENANCE >

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ON-VEHICLE MAINTENANCE

POWER STEERING FLUID

Checking Fluid Level

INFOID:0000000005147865

Check power steering fluid level with engine off, referring to the scale

on reservoir tank.

Use HOT range for fluid temperatures of 50

° – 80°C (122° – 176°F).

Use COLD range for fluid temperatures of 0

° – 30°C (32° – 86°F).

CAUTION:

• Do not overfill.

• Do not reuse any used power steering fluid.

• Recommended fluid is Genuine NISSAN PSF or equivalent.

Refer to

MA-13, "Fluids and Lubricants"

.

Checking Fluid Leakage

INFOID:0000000005147866

Check the hydraulic piping lines for improper attachment and for

leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50

° – 80°C (122° –

176

°F) in reservoir tank. Keep engine speed idle.

2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to

check fluid leakage.

CAUTION:

Do not hold steering wheel in a locked position for more

than 10 seconds. (There is the possibility that oil pump may

be damaged.)

4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con-

nector as this can damage O-ring, washer and connector.

5. If fluid leakage from oil pump is noticed, check oil pump. Refer to

ST-17

.

6. Check steering gear boots for accumulation of fluid indicating a leak from the steering gear.

Air Bleeding Hydraulic System

INFOID:0000000005147867

NOTE:

• When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from oil

pump or gear. This noise is normal and does not affect any system.

• Incomplete air bleeding causes the following. When this happens, bleed air again.

- Air bubbles in reservoir tank.

- Clicking noise in oil pump.

- Excessive buzzing in oil pump.
1. Stop engine, and then turn steering wheel fully to right and left several times.

CAUTION:

Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and

add fluid as needed.

2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds.

Then check for fluid leakage.

3. Repeat step 2 several times at about three second intervals.

CAUTION:

Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-

ity that oil pump may be damaged.)

4. Check for air bubbles or cloudy fluid.
5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud-

iness does not exist.

LGIA0021E

SGIA0506E

ST-14

< ON-VEHICLE MAINTENANCE >

POWER STEERING FLUID

6. Stop engine, check fluid level.