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 NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM -
NATS) (If Equipped)

AAS000CI

NVIS/IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS/IVIS
(NATS).
Both of the originally supplied ignition key IDs have been NVIS/IVIS (NATS) registered.
The security indicator is located on the instrument panel. The indicator blinks when the immobilizer system is
functioning.
Therefore, NVIS/IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system.

●

When NVIS/IVIS (NATS) detects trouble, the security indicator lamp lights up while ignition switch is in
"ON" position.
This lighting up indicates that the anti-theft is not functioning, so prompt service is required.

●

When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of
other NVIS/IVIS (NATS) ignition key IDs), CONSULT-II hardware and CONSULT-II NVIS/IVIS (NATS)
software is necessary.
Regarding the procedures of NVIS/IVIS (NATS) initialization and NVIS/IVIS (NATS) ignition key ID regis-
tration, refer to CONSULT-II operation manual, NVIS/IVIS (NATS).

Therefore, CONSULT-II NVIS/IVIS (NATS) software (program card and operation manual) must be kept
strictly confidential to maintain the integrity of the anti-theft function.

●

When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of
other NVIS/IVIS (NATS) ignition key IDs), it may be necessary to re-register original key identification.
Therefore, be sure to receive all keys from vehicle owner. A maximum of four or five key IDs can be regis-
tered into NVIS/IVIS (NATS).

●

When failing to start the engine first time using the key of NVIS/IVIS (NATS), start as follows.

Leave the ignition key in "ON" position for approximately 5 seconds.

Turn ignition key to "OFF" or "LOCK" position and wait approximately 5 seconds.

Repeat step 1 and 2 again.

Restart the engine while keeping the key separate from any others on key-chain.

GI-4

PRECAUTIONS

Revision; 2004 April

2003 Murano

General Precautions

AAS000CJ

●

Do not operate the engine for an extended period of time without
proper exhaust ventilation.
Keep the work area well ventilated and free of any inflammable
materials. Special care should be taken when handling any
inflammable or poisonous materials, such as gasoline, refriger-
ant gas, etc. When working in a pit or other enclosed area, be
sure to properly ventilate the area before working with hazard-
ous materials.
Do not smoke while working on the vehicle.

●

Before jacking up the vehicle, apply wheel chocks or other tire
blocks to the wheels to prevent the vehicle from moving. After
jacking up the vehicle, support the vehicle weight with safety
stands at the points designated for proper lifting before working
on the vehicle.
These operations should be done on a level surface.

●

When removing a heavy component such as the engine or tran-
saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.

●

Before starting repairs which do not require battery power:
Turn off ignition switch.
Disconnect the negative battery terminal.

●

If the battery terminals are disconnected, recorded memory of
radio and each control unit is erased.

●

To prevent serious burns:
Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.

●

Dispose of drained oil or the solvent used for cleaning parts in
an appropriate manner.

●

Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel
spray and possibly a fire.

●

Clean all disassembled parts in the designated liquid or solvent
prior to inspection or assembly.

●

Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins, self-locking nuts, etc. with new
ones.

●

Replace inner and outer races of tapered roller bearings and needle bearings as a set.

●

Arrange the disassembled parts in accordance with their assembled locations and sequence.

●

Do not touch the terminals of electrical components which use microcomputers (such as ECM).
Static electricity may damage internal electronic components.

●

After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection.

●

Use only the fluids and lubricants specified in this manual.

SGI285

SGI231

SEF289H

SGI233

PRECAUTIONS

GI-5

Revision; 2004 April

2003 Murano

●

Use approved bonding agent, sealants or their equivalents when required.

●

Use hand tools, power tools (disassembly only) and recom-
mended special tools where specified for safe and efficient ser-
vice repairs.

●

When repairing the fuel, oil, water, vacuum or exhaust systems,
check all affected lines for leaks.

●

Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate cov-
ers.
Take caution that keys, buckles or buttons do not scratch paint.

WARNING:

To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness
connectors which are related to the engine control system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.

Precautions for Three Way Catalyst

AAS000CK

If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To
prevent this, follow the instructions.

●

Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.

●

When checking for ignition spark or measuring engine compression, make tests quickly and only when
necessary.

●

Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to
the catalyst.

Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.

Precautions for Fuel (Unleaded Premium Gasoline Recommended)

AAS000DK

Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research
octane number 91).

For improved vehicle performance, NISSAN/INFINITI recommend the use of unleaded premium gasoline with
an octane rating of at least 91 AKI number (Research octane number 96).

CAUTION:

Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel
other than that specified could adversely affect the emission control devices and systems, and could
also affect the warranty coverage validity.

PBIC0190E

SGI234

GI-6

PRECAUTIONS

Revision; 2004 April

2003 Murano

Precautions for Multiport Fuel Injection System or Engine Control System

AAS000CM

●

Before connecting or disconnecting any harness connector for
the multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.

●

Before disconnecting pressurized fuel line from fuel pump to
injectors, be sure to release fuel pressure.

●

Be careful not to jar components such as ECM and mass air
flow sensor.

Precautions for Hoses

AAS000CO

HOSE REMOVAL AND INSTALLATION

●

To prevent damage to rubber hose, do not pry off rubber hose
with tapered tool or screwdriver.

●

To reinstall the rubber hose securely, make sure that hose inser-
tion length and orientation is correct. (If tube is equipped with
hose stopper, insert rubber hose into tube until it butts up
against hose stopper.)

HOSE CLAMPING

●

If old rubber hose is re-used, install hose clamp in its original
position (at the indentation where the old clamp was). If there is
a trace of tube bulging left on the old rubber hose, align rubber
hose at that position.

●

Discard old clamps; replace with new ones.

SGI787

SMA019D

SMA020D

SMA021D

PRECAUTIONS

GI-7

Revision; 2004 April

2003 Murano

●

After installing plate clamps, apply force to them in the direction
of the arrow, tightening rubber hose equally all around.

Precautions for Engine Oils

AAS000CP

Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.

HEALTH PROTECTION PRECAUTIONS

●

Avoid prolonged and repeated contact with oils, particularly used engine oils.

●

Wear protective clothing, including impervious gloves where practicable.

●

Do not put oily rags in pockets.

●

Avoid contaminating clothes, particularly underpants, with oil.

●

Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.

●

First aid treatment should be obtained immediately for open cuts and wounds.

●

Use barrier creams, applying them before each work period, to help the removal of oil from the skin.

●

Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepa-
rations containing lanolin replace the natural skin oils which have been removed.

●

Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.

●

If skin disorders develop, obtain medical advice without delay.

●

Where practical, degrease components prior to handling.

●

Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.

ENVIRONMENTAL PROTECTION PRECAUTIONS

Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste dis-
posal sites, or to the waste oil reclamation trade. If in doubt, contact the local authority for advice on disposal
facilities.
It is illegal to pour used oil on to the ground, down sewers or drains, or into water sources.
The regulations concerning pollution vary between regions.

Precautions for Air Conditioning

AAS000CQ

Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to
ATC/MTC section “HFC-134a (R-134a) Service Procedure”, “REFRIGERANT LINES” for specific instructions.

SMA022D

GI-8

HOW TO USE THIS MANUAL

Revision; 2004 April

2003 Murano

HOW TO USE THIS MANUAL

PFP:00008

Description

AAS000IN

This volume explains “Removal, Disassembly, Installation, Inspection and Adjustment” and “Trouble Diag-
noses”.

Terms

AAS000IO

●

The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal
injury and/or damage to some part of the vehicle.
WARNING indicates the possibility of personal injury if instructions are not followed.
CAUTION indicates the possibility of component damage if instructions are not followed.
BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information.
Standard value:Tolerance at inspection and adjustment.
Limit value:The maximum or minimum limit value that should not be exceeded at inspection and adjust-
ment.

Units

AAS000IP

●

The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit),
and alternatively expressed in the metric system and in the yard/pound system.
Also with regard to tightening torque of bolts and nuts, there are descriptions both about range and about
the standard tightening torque.

“Example”
Range

Standard

Contents

AAS000IQ

●

ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and
page you are searching for.

●

A QUICK REFERENCE INDEX, a black tab (e.g.

) is provided on the first page. You can quickly find

the first page of each section by matching it to the section's black tab.

●

THE CONTENTS are listed on the first page of each section.

●

THE TITLE is indicated on the upper portion of each page and shows the part or system.

●

THE PAGE NUMBER of each section consists of two or three letters which designate the particular sec-
tion and a number (e.g. “BR-5”).

●

THE SMALL ILLUSTRATIONS show the important steps such as inspection, use of special tools, knacks
of work and hidden or tricky steps which are not shown in the previous large illustrations.
Assembly, inspection and adjustment procedures for the complicated units such as the automatic tran-
saxle or transmission, etc. are presented in a step-by-step format where necessary.

Outer Socket Lock Nut

: 59 - 78 N·m (6.0 - 8.0 kg-m, 43 - 58 ft-lb)

Drive Shaft Installation Bolt

: 44.3 N·m (4.5 kg-m, 33 ft-lb)

HOW TO USE THIS MANUAL

GI-9

Revision; 2004 April

2003 Murano

Components

AAS000NB

●

THE LARGE ILLUSTRATIONS are exploded views (See the following) and contain tightening torques,
lubrication points, section number of the PARTS CATALOG (e.g. SEC. 440) and other information neces-
sary to perform repairs.
The illustrations should be used in reference to service matters only. When ordering parts, refer to the
appropriate PARTS CATALOG .
Components shown in an illustration may be identified by a circled number. When this style of illustration
is used, the text description of the components will follow the illustration.

SYMBOLS

SAIA0399E

SYMBOL

DESCRIPTION

Tightening torque
The tightening torque specifications of bolts and nuts may be presented as either a range or a standard tightening
torque.

Should be lubricated with grease. Unless otherwise indicated, use recommended multi-purpose grease.

Should be lubricated with oil.

Sealing point

Checking point

Always replace after every disassembly.

Apply petroleum jelly.

Apply ATF.

Select with proper thickness.

Adjustment is required.

GI-10

HOW TO USE THIS MANUAL

Revision; 2004 April

2003 Murano

How to Follow Trouble Diagnoses

AAS000CW

DESCRIPTION

NOTICE:
Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following
instructions before diagnosing.

Before performing trouble diagnoses, read the “Preliminary Check”, the “Symptom Chart” or the
“Work Flow”.

After repairs, re-check that the problem has been completely eliminated.

Refer to Component Parts and Harness Connector Location for the Systems described in each
section for identification/location of components and harness connectors.

Refer to the Circuit Diagram for quick pinpoint check.
If you need to check circuit continuity between harness connectors in more detail, such as when a
sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout in PG
section for identification of harness connectors.

When checking circuit continuity, ignition switch should be OFF.

Before checking voltage at connectors, check battery voltage.

After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure
that all harness connectors are reconnected as they were.

HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES

Work and diagnostic procedure
Start to diagnose a problem using procedures indicated in enclosed test groups.

Questions and required results
Questions and required results are indicated in bold type in test group.
The meaning of are as follows:

SAIA0256E

HOW TO USE THIS MANUAL

GI-11

Revision; 2004 April

2003 Murano

Symbol used in illustration
Symbols included in illustrations refer to measurements or procedures. Before diagnosing a problem,
familiarize yourself with each symbol. Refer to "Connector Symbols" in GI Section and "KEY TO SYM-
BOLS SIGNIFYING MEASUREMENTS OR PROCEDURES" below.

Action items
Next action for each test group is indicated based on result of each question. Test group number is shown
in the left upper portion of each test group.

HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION

There are two types of harness wire color and connector number indication.

TYPE 1: Harness Wire Color and Connector Number are Shown in Illustration

●

Letter designations next to test meter probe indicate harness
wire color.

●

Connector numbers in a single circle (e.g. M33) indicate har-
ness connectors.

●

Connector numbers in a double circle (e.g. F211) indicate com-
ponent connectors.

a. Battery voltage

→

11 - 14V or approximately 12V

b. Voltage

: Approximately 0V

→

Less than 1V

AGI070

GI-12

HOW TO USE THIS MANUAL

Revision; 2004 April

2003 Murano

TYPE 2: Harness Wire Color and Connector Number are Shown in Text

KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES

SGI144A

Symbol

Symbol explanation

Symbol

Symbol explanation

Check after disconnecting the connec-
tor to be measured.

Procedure with Generic Scan Tool
(GST, OBD-II scan tool)

Check after connecting the connector
to be measured.

Procedure without CONSULT, CON-
SULT-II or GST

Insert key into ignition switch.

A/C switch is “OFF”.

Remove key from ignition switch.

A/C switch is “ON”.

Turn ignition switch to “OFF” position.

REC switch is “ON”.

Turn ignition switch to “ON” position.

REC switch is “OFF”.

Turn ignition switch to “START” posi-
tion.

Fan switch is “ON”. (At any position
except for “OFF” position)

Turn ignition switch from “OFF” to
“ACC” position.

Fan switch is “OFF”.

Turn ignition switch from “ACC” to
“OFF” position.

Apply positive voltage from battery
with fuse directly to components.

HOW TO USE THIS MANUAL

GI-13

Revision; 2004 April

2003 Murano

Turn ignition switch from “OFF” to
“ON” position.

Drive vehicle.

Turn ignition switch from “ON” to
“OFF” position.

Disconnect battery negative cable.

Do not start engine, or check with
engine stopped.

Depress brake pedal.

Start engine, or check with engine run-
ning.

Release brake pedal.

Apply parking brake.

Depress accelerator pedal.

Release parking brake.

Release accelerator pedal.

Check after engine is warmed up suffi-
ciently.

Pin terminal check for SMJ type ECM
and TCM connectors.
For details regarding the terminal
arrangement, refer to the “ELEC-
TRICAL UNITS” electrical reference
page at the end of the manual.

Voltage should be measured with a
voltmeter.

Circuit resistance should be measured
with an ohmmeter.

Current should be measured with an
ammeter.

Pulse signal should be checked with
an oscilloscope.

Procedure with CONSULT-II

Procedure without CONSULT-II

Symbol

Symbol explanation

Symbol

Symbol explanation

GI-14

HOW TO USE THIS MANUAL

Revision; 2004 April

2003 Murano

How to Read Wiring Diagrams

AAS000CX

CONNECTOR SYMBOLS

Most of connector symbols in wiring diagrams are shown from the terminal side.

●

Connector symbols shown from the terminal side are enclosed
by a single line and followed by the direction mark.

●

Connector symbols shown from the harness side are enclosed
by a double line and followed by the direction mark.

●

Certain systems and components, especially those related to
OBD, may use a new style slide-locking type harness connector.
For description and how to disconnect, refer to PG section,
“Description”, “HARNESS CONNECTOR”.

●

Male and female terminals
Connector guides for male terminals are shown in black and
female terminals in white in wiring diagrams.

SAIA0257E

SGI363

HOW TO USE THIS MANUAL

GI-15

Revision; 2004 April

2003 Murano

SAMPLE/WIRING DIAGRAM - EXAMPL -

●

For detail, refer to following “DESCRIPTION”.

SGI091A

GI-16

HOW TO USE THIS MANUAL

Revision; 2004 April

2003 Murano

Optional Splice

DESCRIPTION

SGI942

Num-

ber

Item

Description

Power condition

●

This shows the condition when the system receives battery positive voltage (can be oper-
ated).

Fusible link

●

The double line shows that this is a fusible link.

●

The open circle shows current flow in, and the shaded circle shows current flow out.

Fusible link/fuse loca-
tion

●

This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrange-
ment, refer to PG section, POWER SUPPLY ROUTING.

Fuse

●

The single line shows that this is a fuse.

●

The open circle shows current flow in, and the shaded circle shows current flow out.

Current rating

●

This shows the current rating of the fusible link or fuse.

Connectors

●

This shows that connector E3 is female and connector M1 is male.

●

The G/R wire is located in the 1A terminal of both connectors.

●

Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connec-
tor. Refer to PG section, SMJ (SUPER MULTIPLE JUNCTION).

Optional splice

●

The open circle shows that the splice is optional depending on vehicle application.

Splice

●

The shaded circle shows that the splice is always on the vehicle.

Page crossing

●

This arrow shows that the circuit continues to an adjacent page.

●

The A will match with the A on the preceding or next page.

Common connector

●

The dotted lines between terminals show that these terminals are part of the same connector.

Option abbreviation

●

This shows that the circuit is optional depending on vehicle application.

Relay

●

This shows an internal representation of the relay. For details, refer to PG section, STAN-
DARDIZED RELAY.

Connectors

●

This shows that the connector is connected to the body or a terminal with bolt or nut.

Content .. 135 136 137 138 ..