Infiniti QX56 (Z62). Manual - part 235

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SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Alternator

INFOID:0000000006274881

*: Adjustment range of power generation voltage variable control is 11.4 - 15.6 V.

Type

A002TX1491

MITSUBISHI make

Nominal rating

[V - A]

12 -150

Ground polarity

Negative

Minimum revolution under no-load (When 13.5 V is ap-
plied)

[rpm]

Less than 1,300

Hot output current (When 13.5 V is applied)

[A/rpm]

More than 57/1,500

More than 126/2,500
More than 152/5,000

Regulated output voltage

[V]

14.1 - 14.7

*

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ENGINE

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SECTION 

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CONTENTS

ENGINE COOLING SYSTEM

PRECAUTION ...............................................

2

PRECAUTIONS ...................................................

2

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

2

PREPARATION ............................................

3

PREPARATION ...................................................

3

Commercial Service Tools .......................................

3

SYSTEM DESCRIPTION  ..............................

4

DESCRIPTION ....................................................

4

Engine Cooling System ...........................................

4

Engine Cooling System Schematic .........................

5

SYMPTOM DIAGNOSIS  ...............................

6

OVERHEATING CAUSE ANALYSIS  ..................

6

Troubleshooting Chart ..............................................

6

PERIODIC MAINTENANCE ..........................

8

ENGINE COOLANT  ............................................

8

Inspection ..................................................................

8

Draining .....................................................................

8

Refilling .....................................................................

9

Flushing ...................................................................

10

RADIATOR .........................................................

11

RESERVOIR TANK CAP  ..........................................

11

RESERVOIR TANK CAP : Inspection .....................

11

RADIATOR .................................................................

11

RADIATOR : Inspection ...........................................

11

REMOVAL AND INSTALLATION  ...............

13

RADIATOR ........................................................

13

Exploded View .........................................................

13

Removal and Installation  .........................................

13

Inspection ................................................................

15

COOLING FAN ..................................................

16

Exploded View .........................................................

16

Removal and Installation  .........................................

16

Inspection ................................................................

17

WATER PUMP  ..................................................

18

Exploded View .........................................................

18

Removal and Installation  .........................................

18

Inspection ................................................................

19

WATER INLET AND THERMOSTAT ASSEM-
BLY ....................................................................

20

Exploded View .........................................................

20

Removal and Installation  .........................................

20

Inspection ................................................................

21

SERVICE DATA AND SPECIFICATIONS 
(SDS) ............................................................

23

SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................

23

Periodical Maintenance Specification ....................

23

Radiator ...................................................................

23

Thermostat ..............................................................

23

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< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000006417198

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 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 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

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< PREPARATION >

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PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000006289653

Tool name

Description

Power tool

Loosening bolts and nuts

Radiator cap tester

Checking radiator and radiator cap (reservoir 
tank cap)

Radiator cap tester adapter

Adapting radiator cap tester to radiator cap 
(reservoir tank cap) and water inlet 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