Infiniti Q45. Manual - part 899

PREPARATION

WT-5

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PREPARATION

PFP:00002

Special Service Tools

NES000CW

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

NES000CX

Tool number
(Kent-Moore No.)
Tool name

Description

—

(J-45295)
Transmitter activation tool

ID registration

SEIA0462E

Tool name

Description

Power tool

Removing wheel nuts

PBIC0190E

WT-6

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

NES00070

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

×

: Applicable

Reference page

FA

X

-4

, 

FSU-

7

WT

-53

WT

-54

WT

-56

WT

-55

—

—

WT

-56

NVH i

n

 PR s

e

c

tio

n

NVH i

n

 RFD s

e

c

tio

n

NVH 

in

 F

AX a

n

d

 FSU s

e

c

tio

n

s

NVH i

n

 RAX a

n

d

 RSU s

e

c

tio

n

s

Re

fe

r to

 TIRES in

 t

h

is

 c

h

a

rt

Re

fe

r to

 ROAD W

H

EEL

 in

 th

is

 c

h

a

rt

NVH i

n

 RAX s

e

c

tio

n

NVH i

n

 BR s

e

c

tio

n

N

V

H

 i

n

 PS se

ct

io

n

Possible cause and SUSPECTED PARTS

Im

pr

ope

r i

n

st

al

la

ti

on,

 l

o

o

s

ene

ss

O

u

t-

of

-r

oun

d

Im

ba

la

nce

In

c

o

rr

e

c

t ti

re

 p

re

s

s

u

re

U

nev

en t

ir

e

 w

e

a

r

D

e

fo

rm

at

ion or

 da

m

a

ge

N

on-

uni

fo

rm

it

y

In

cor

rec

t t

ir

e

 si

ze

PROPELLER SHAFT

DI

FF

ERENTI

AL

FRONT A

X

LE 

AND FRONT 

SUSPENSION

REAR A

X

LE 

AND REAR 

SUSPENSION

TIR

E

S

ROAD W

H

EEL

DRI

VE SHAFT

BRAKE

STEERING

Symptom

TIRES

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Vibration

×

×

×

×

×

×

×

Shimmy

×

×

×

×

×

×

×

×

×

×

×

×

×

Judder

×

×

×

×

×

×

×

×

×

×

×

×

Poor quality ride 
or handling

×

×

×

×

×

×

×

×

×

×

ROAD WHEEL

Noise

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

×

×

×

Shimmy, judder

×

×

×

×

×

×

×

×

×

Poor quality ride 
or handling

×

×

×

×

×

×

×

LOW TIRE PRESSURE WARNING SYSTEM

WT-7

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LOW TIRE PRESSURE WARNING SYSTEM

PFP:40300

System Description

NES00075

DESCRIPTION

During driving, the low tire pressure warning system receives the signal transmitted from the transmitter
installed in each wheel, and gives alarms when the tire pressure becomes low. The control unit of this system
has pressure judgement and trouble diagnosis functions.

FUNCTION

When the low tire pressure warning system detects low inflation pressure or another unusual symptom, the
warning lamps on the instrument panel comes on. To start the self-diagnostic results mode, ground the self-
diagnostic (check) terminal. The malfunction location is indicated by the warning lamp flashing and the buzzer
sounds.

TRANSMITTER

A sensor-transmitter (1) integrated with a valve is installed on a
wheel (2), and transmits a detected air pressure signal in the form of
a radio wave.

ANTENNA

Receives the radio wave signal transmitted by the transmitter.

LOW TIRE PRESSURE WARNING CONTROL UNIT

Reads the radio wave signal received by the antenna, and controls
the low tire pressure warning lamp and the buzzer operations. It also
has a judgement function to detect a system malfunction.

:

Outer

SEIA0768E

SEIA0042E

1:

 Low tire pressure warning control unit

SEIA0739E

WT-8

LOW TIRE PRESSURE WARNING SYSTEM

LOW TIRE PRESSURE WARNING LAMP AND BUZZER

●

Turns ON when there is a malfunction in low tire pressure warn-
ing system.

●

Turns ON when ignition switch is turned ON, for purpose of lamp
check. Turns OFF approximately for 1 second after the engine
starts if system is normal.

Low Tire Pressure Warning Lamp

*: Standard air pressure is for 230 kPa (2.3 kg/cm

2

 , 33 psi) vehicle.

TIRE PRESSURE WARNING CHECK SWITCH

The following item can be checked by grounding the tire pressure
warning check switch (1) harness connector terminal.

●

The low tire pressure warning lamp in the combination meter will
flicker according to the self-diagnostic results.

VEHICLE INFORMATION DISPLAY

Displays the air pressure of each tire.

●

After the ignition switch is turned ON, the pressure values are
not be displayed until the data of all four wheels stabilizes.

SEIA0434E

Condition

Warning lamp

Buzzer

Less than 186 kPa (1.86 kg/cm

2

 , 27 psi)*

ON

Sounds for 10 sec.

System malfunction

ON

OFF

SEIA0740E

SEIA0044E