Infiniti FX35, FX50 (S51). Manual - part 440

 

  Index      Infiniti     Infiniti FX35, FX50 (S51) - service repair manual 2010 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  438  439  440  441   ..

 

 

Infiniti FX35, FX50 (S51). Manual - part 440

 

 

OVERHEATING CAUSE ANALYSIS

CO-5

< SYMPTOM DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

Except cool-
ing system 
parts mal-
function

Overload on engine

Abusive driving

High engine rpm under no 
load

Driving in low gear for ex-
tended time

Driving at extremely high 
speed

Powertrain system malfunc-
tion

Installed improper size 
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air 
flow

Blocked bumper

Blocked radiator grille

Installed car brassiere

Mud contamination or paper 
clogging

Blocked radiator

Blocked condenser

Blocked air flow

Installed large fog lamp

Symptom

Check items

CO-6

< PRECAUTION >

[VQ35HR]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000005550564

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:

• 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 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 the “SRS AIR BAG”.

• 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 har-
ness connectors.

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

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT 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.

PREPARATION

CO-7

< PREPARATION >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000005246353

Tool name

Description

Power tool

Loosening bolts and nuts

Radiator cap tester

Checking radiator and radiator cap

Radiator cap tester adapter

Adapting radiator cap tester to radiator cap 
and water outlet (front) filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

PBIC0190E

PBIC1982E

S-NT564

CO-8

< PERIODIC MAINTENANCE >

[VQ35HR]

ENGINE COOLANT

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

INFOID:0000000005246354

LEVEL 

• Check if the reservoir tank engine coolant level is within the “MIN”

to “MAX” when the engine is cool.

• Adjust the engine coolant level as necessary.
• Check that the reservoir tank cap is tightened.

LEAKAGE

• To check for leakage, apply pressure to the cooling system with the

radiator cap tester and radiator cap tester adapter (commercial
service tool) (A).

WARNING:

Never remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
water outlet (front).

CAUTION:

Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, fill radiator with engine coolant.

• If anything is found, repair or replace damaged parts.

Draining

INFOID:0000000005246355

WARNING:

• Never change engine coolant when the engine is hot to avoid being scalded.
• Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a

quarter of a turn to release built-up pressure. Then turn radiator cap all the way.

1.

Open radiator drain plug (2) at the bottom of radiator, and then
remove radiator cap. 

When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to 

EM-92, "Setting"

.

2.

Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing. 

3.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.

A

:  MAX

B

:  MIN

JPBIA0102ZZ

Testing pressure

: Refer to 

CO-26, "Radiator"

.

JPBIA0411ZZ

1

: Engine under cover

A

: Radiator drain plug hole

: Vehicle front

JPBIA0259ZZ

 

 

 

 

 

 

 

Content   ..  438  439  440  441   ..