Infiniti M35/M45 Y50. Manual - part 317

PRECAUTIONS

BR-3

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PRECAUTIONS

PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

NFS000RO

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 and SB section of this Service Man-
ual.

WARNING:

●

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Precautions for Procedures without Cowl Top Cover

NFS000RP

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Precautions for Brake System

NFS000RQ

●

Clean dust on front brake and rear brake with a vacuum dust collector. Do not blow with compressed air.

●

Recommended fluid is brake fluid “DOT 3”. Refer to 

MA-12, "Fluids and Lubricants"

 .

●

Never reuse drained brake fluid.

●

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed
on painted areas, wash it away with water immediately.

●

Use clean brake fluid, to clean or wash all parts of master cylinder and disc brake caliper, etc.

●

Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.

●

Use flare nut torque wrench when installing brake tube.

●

When installing brake tube and hose, be sure to check torque.

●

Before working, turn ignition switch OFF and disconnect con-
nectors of ABS actuator and electric unit (control unit) or battery
cable from the negative terminal.

●

Burnish the brake contact surfaces after refinishing or replacing
rotors, after replacing pads, or if a soft pedal occurs at very low
mileage. Refer to 

BR-27, "BRAKE BURNISHING PROCE-

DURE"

  (front disc brake), 

BR-33, "BRAKE BURNISHING PRO-

CEDURE"

  (rear disc brake).

WARNING:

●

Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.

PIIB3706J

SBR686C

BR-4

PREPARATION

PREPARATION

PFP:00002

Commercial Service Tools

NFS000RR

Tool name

Description

1. Flare nut crowfoot

a:10 mm (0.39 in) / 12 mm (0.47 in)

2. Torque wrench

Installing each brake tube and hose

Power tool

Loosening bolts and nuts

Pin punch
Tip diameter: 4 mm (0.16in) dia.

Removing and installing reservoir tank 
pin

NT360

PBIC0190E

ZZA0515D

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

BR-5

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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

NFS000RS

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

×

: Applicable

Reference page

BR-

2

2

, 

BR-

2

8

BR-

2

2

, 

BR-

2

8

  

BR-

2

2

, 

BR-

2

8

  

—

—

BR-

2

7

, 

BR-

3

3

  

—

—

—

BR-

2

7

, 

BR-

3

3

  

—

N

V

H in

 PR s

e

c

ti

o

n

N

H

V

 in

 FFD a

n

d

 RFD s

e

c

tio

n

N

V

H in

 F

AX, RAX 

a

n

d

 FS

U

, 

RSU s

e

c

ti

o

n

N

V

H 

in

 W

T

 s

e

c

tio

n

N

V

H 

in

 W

T

 s

e

c

tio

n

N

V

H

 i

n

 F

AX and R

AX sec

ti

o

n

N

V

H in

 PS s

e

c

tio

n

Possible cause and
SUSPECTED PARTS

Pad

s

 -

 dam

age

d

Pad

s

 -

 unev

en w

ear

Shi

m

s dam

ag

ed

R

o

to

r i

m

bal

anc

e

Ro

to

r d

a

ma

g

e

R

o

to

r r

uno

ut

Ro

to

r d

e

fo

rm

a

ti

o

n

R

o

to

r d

e

fl

e

c

ti

o

n

Ro

to

r ru

s

t

R

o

to

r t

h

ickn

ess 

va

ri

at

io

n

D

rum

 ou

t 

of

 r

oun

d

PROPELL

E

R SHAF

T

DIFFERENTIAL

AXL

E AND 

SUSPENSION

TIRES

ROAD W

H

EEL

D

R

IV

E

 SH

AF

T

STEERING

Symptom

BRAKE

Noise

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

Shimmy, Judder

×

×

×

×

×

×

×

×

×

×

×

BR-6

BRAKE PEDAL

BRAKE PEDAL

PFP:46501

Inspection and Adjustment

NFS000RT

Play and clearance inspection between brake pedal and floor panel with pedal depressed.

●

Check brake pedal play.

●

Check brake pedal height from dash lower panel (1).

●

Adjust height referring to the following specifications.

ADJUSTMENT

1.

Loosen stop lamp switch and brake switch by turning it counter-
clockwise by 45

°

.

2.

Loosen lock nut (A) on the input rod to rotate input rod for adjust-
ing brake pedal height to the specified one, and tighten lock nut
(A). Refer to 

BR-18, "COMPONENTS"

 .

CAUTION:

Make sure the threaded end of input rod stays inside clevis.

3.

With the pedal pulled and held by hand, press stop lamp switch
and brake switch until its threaded end contacts stopper.

4.

With the threaded end of the stop lamp switch and brake switch
contacting the bracket, rotate the switch clockwise by 45

°

 to

secure.

CAUTION:

Make sure that the clearance “C” between bracket and end
of stop lamp switch and brake switch is within the standard. 

5.

Check pedal play.

CAUTION:

Make sure that stop lamps goes off when pedal is released.

6.

Start engine to check brake pedal depression height when
depressed. Refer to 

BR-6, "Inspection and Adjustment"

 .

H

1

Brake pedal height 
[from dash lower panel (1) top surface]

157 

−

 167 mm (6.18 

−

 

6.57 in) 

H

2

Depressed brake pedal height                         
[under a force of 490 N (50 kg, 110 lb) with 
engine running]

90 mm (3.54 in) or more

C

Clearance between threaded end of the stop 
lamp switch/brake switch (2) and bracket (3)

0.74 

−

 1.96 mm (0.0291 

−

 

0.0772 in) 

A

Pedal play

3 

−

 11 mm (0.12 

−

 0.43 

in) 

SFIA2743J

PFIA0824E