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

ADS000WC

●

Before connecting or disconnecting the AWD control unit
harness connector, turn ignition switch “OFF” and discon-
nect battery ground cable. Because battery voltage is
applied to AWD control unit even if ignition switch is turned
“OFF”.

●

When connecting or disconnecting pin connectors into or
from AWD control unit, take care not to damage pin termi-
nals (bend or break).
When connecting pin connectors, make sure that there are
no bends or breaks on AWD control unit pin terminal.

●

Before replacing AWD control unit, perform AWD control
unit input/output signal inspection and make sure whether
AWD control unit functions properly or not. Refer to

TF-22,

"AWD Control Unit Input/Output Signal Reference Values"

SEF289H

SEF291H

SDIA1848E

TF-4

PRECAUTIONS

Revision: 2004 November

2004 Murano

Service Notice

ADS000WD

●

After overhaul refill the transfer with new transfer oil.

●

Check the oil level or replace the oil only with the vehicle parked on level ground.

●

During removal or installation, keep inside of transfer clear of dust or dirt.

●

Replace all tires at the same time. Always use tires of the proper size and the same brand and pattern.
Fitting improper size and unusual wear tires applies excessive force to vehicle mechanism and can cause
longitudinal vibration.

●

Disassembly should be done in a clean work area.

●

Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the internal
parts from becoming contaminated by dirt or other foreign matter.

●

Check for the correct installation status prior to removal or disassembly. If matching marks are required,
be certain they do not interfere with the function of the parts when applied.

●

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

●

Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them
with a new ones if necessary.

●

Gaskets, seals, O-rings and lock nuts should be replaced any time when the transfer is disassembled.

●

In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If
tightening sequence is specified, use it.

●

Observe the specified torque when assembling.

●

Clean and flush the parts sufficiently and blow-dry them.

●

Be careful not to damage sliding surfaces and mating surfaces.

●

Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transfer.

Wiring Diagrams and Trouble Diagnosis

ADS000WE

When reading wiring diagrams, refer to the following:

●

GI-14, "How to Read Wiring Diagrams"

●

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

When performing trouble diagnosis, refer to the following:

●

GI-10, "How to Follow Trouble Diagnoses"

●

GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"

PREPARATION

TF-5

Revision: 2004 November

2004 Murano

PREPARATION

PFP:00002

Special Service Tools

ADS000U8

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

Tool number
(Kent-Moore No.)
Tool name

Description

KV38101700
(

—

)

Drift
a: 82 mm (3.23 in) dia.
b: 78 mm (3.07 in) dia.

Installing side oil seal (installing adapter case
oil seal)

ST3127S000
(J25765-A)
Preload gauge

Measuring preload torque

ST33220000
(J25804-01)
Drift
a: 37 mm (1.46 in) dia.
b: 31 mm (1.22 in) dia.
c: 22 mm (0.87 in) dia.

Removing drive pinion

KV381054S0
(J34286)
Puller

●

Removing pinion rear bearing outer race

●

Removing pinion front bearing outer race

●

Removing gear ring oil seal

ST30031000
(J22912-01)
Replacer

Removing pinion front bearing inner race

ST33200000
(J26082)
Drift
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia.

●

Removing gear ring bearing inner race
(adapter case side)

●

Installing companion flange

ST33061000
(J8107-2)
Drift
a: 38 mm (1.50 in) dia.
b: 28.5 mm (1.122 in) dia.

Removing gear ring bearing inner race
(transfer case side)

ZZA1149D

ZZA0503D

ZZA1046D

ZZA0601D

ZZA0700D

ZZA1002D

ZZA0810D

TF-6

PREPARATION

Revision: 2004 November

2004 Murano

ST30720000
(J25405)
Drift
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.

●

Installing gear ring bearing outer race
(transfer case side)

●

Installing gear ring bearing inner race
(transfer case side)

●

Installing gear ring bearing inner race
(adapter case side)

●

Installing gear ring bearing outer race
(adapter case side)

●

Installing transfer case oil seal

KV40101840
(

—

)

Drift
a: 77 mm (3.03 in) dia.
b: 85 mm (3.35 in) dia.

Installing gear ring bearing outer race
(transfer case side)

ST33230000
(J25805-01)
Drift
a: 51 mm (2.01 in) dia.
b: 41 mm (1.61 in) dia.
c: 28.5 mm (1.122 in) dia.

Installing gear ring oil seal

ST27863000
(

—

)

Drift
a: 74.5 mm (2.933 in) dia.
b: 62.5 mm (2.461 in) dia.

Installing gear ring bearing inner race
(transfer case side)

KV40101630
(J35870)
Drift
a: 68 mm (2.68 in) dia.
b: 60 mm (2.36 in) dia.

Installing gear ring bearing inner race
(transfer case side)

KV38102510
(

—

)

Drift
a: 71 mm (2.80 in) dia.
b: 65 mm (2.56 in) dia.

Installing gear ring bearing inner race
(adapter case side)

KV40105230
(

—

)

Drift
a: 92 mm (3.62 in) dia.
b: 86 mm (3.39 in) dia.

Installing gear ring bearing outer race
(adapter case side)

Tool number
(Kent-Moore No.)
Tool name

Description

ZZA0811D

ZZA0881D

ZZA1046D

ZZA1003D

ZZA1141D

PREPARATION

TF-7

Revision: 2004 November

2004 Murano

Commercial Service Tools

ADS000WY

KV38100300
(J25523)
Drift
a: 54 mm (2.13 in) dia.
b: 46 mm (1.81 in) dia.
c: 32 mm (1.26 in) dia.

Installing pinion rear bearing outer race

ST33400001
(J26082)
Drift
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.

●

Installing pinion front bearing outer race

●

Installing pinion sleeve oil seal

ST30901000
(J26010-01)
Drift
a: 79 mm (3.11 in) dia.
b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.386 in) dia.

●

Installing pinion front bearing outer race

●

Installing pinion front bearing inner race

Tool number
(Kent-Moore No.)
Tool name

Description

ZZA1046D

ZZA0814D

ZZA0978D

Tool name

Description

Power tool

●

Loosening nuts and bolts

PBIC0190E

TF-8

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

Revision: 2004 November

2004 Murano

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

ADS000WF

Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.

Reference page

TF-

SUSPECTED PARTS
(Possible cause)

TRANSFER

(

Lev

el low)

SFER

(

rong)

SFER

(

Lev

gh)

LIQUI

GASKET (

ed)

-R

(

aged

)

AL (

ged

)

EAR

(

rn or

aged

)

BEARING

n or

ged)

Symptom

Noise

Transfer oil leakage

TRANSFER OIL

TF-9

Revision: 2004 November

2004 Murano

TRANSFER OIL

PFP:KLD30

Replacement

ADS000UA

DRAINING

CAUTION:

When draining oil, protect exhaust tube flange with cover.

Run the vehicle to warm up the transfer body sufficiently.

Stop the engine, and remove the drain plug to drain the transfer
oil.

Apply sealant to drain plug. Install drain plug on transfer and
tighten to the specified torque. Refer to

TF-53, "COMPO-

NENTS"

●

Use Genuine Silicone RTV or equivalent. Refer to

GI-47,

FILLING

Remove filler plug and add gear oil until oil level reaches the
specified limit near filler plug mounting hole.

CAUTION:

Carefully fill the oil. (Fill up for approx. 3 minutes)

Leave the vehicle for 3 minutes, and check the oil level again.

Apply sealant to filler plug. Install filler plug on transfer and
tighten to the specified torque. Refer to

TF-53, "COMPO-

NENTS"

●

Use Genuine Silicone RTV or equivalent. Refer to

GI-47,

Inspection

ADS000UB

OIL LEAKAGE AND OIL LEVEL

Check oil level from filler plug mounting hole as shown in the fig-
ure.

CAUTION:

Do not start engine while checking oil level.

Before installing filler plug, apply sealant. Install filler plug on
transfer and tighten to the specified torque. Refer to

TF-53,

"COMPONENTS"

●

Use Genuine Silicone RTV or equivalent. Refer to

GI-47,

SDIA1507E

Oil capacity

: Approx. 0.31 (5/8 US pt, 1/2 lmp pt)

SDIA1508E

TF-10

AWD SYSTEM

Revision: 2004 November

2004 Murano

AWD SYSTEM

PFP:41650

Power Transfer Diagram

ADS000WG

System Description

ADS000WH

ELECTRIC CONTROLLED COUPLING
Operation Principle

AWD control unit supplies command current to electric con-
trolled coupling (AWD solenoid).

Control clutch is engaged by electromagnet and torque is
detected in control clutch.

The cam operates in response to control clutch torque and
applies pressure to main clutch.

Main clutch transmits torque to front wheels according to press-
ing power.

●

Transmission torque to rear wheels is determined according
to command current.

AWD CONTROL UNIT

●

Controls distribution of drive power between front-wheel drive
(100:0) and AWD (50:50) conditions according to signals from
sensors.

●

Self-diagnosis can be done with CONSULT-II.

SDIA1607E

SDIA2035E

SDIA1844E

SDIA2341E

AWD SYSTEM

TF-11

Revision: 2004 November

2004 Murano

AWD LOCK SWITCH
AUTO Mode (AWD Lock Switch: OFF)

●

Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.

●

Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

●

On roads which do not require AWD, it contributes to improved fuel economy by driving in conditions close
to front-wheel drive.

●

Sensors determine the vehicle's turning condition, and in response tight cornering/braking are controlled
by distributing optimum torque to rear wheels.

LOCK Mode (AWD Lock Switch: ON)

●

Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.

●

Vehicle will switch automatically to AUTO mode if vehicle speed increases. If vehicle speed then
decreases, the vehicle automatically returns to direct 4-wheel driving conditions.

●

LOCK mode will change to AUTO mode automatically, when the vehicle speed exceeds approx. 30 km/h
(19 MPH). The AWD LOCK indicator light keeps illuminating.

NOTE:

●

When driving in AUTO mode or LOCK mode, if there is a large difference between front and rear wheel
speed which continues for a long time, oil temperature of drive system parts becomes too high and AWD
warning lamp flashes rapidly. (When AWD warning lamp flashes, vehicle changes to front-wheel drive
conditions.)

●

If AWD warning lamp is flashing rapidly, stop vehicle and allow it to idle for some time. Flashing will stop
and AUTO mode will be restored.

●

When driving in AUTO mode, AWD warning lamp may flash slowly if there is a significant difference in
diameter of the tires. At this time, vehicle performance is not fully available and cautious driving is
required. (Continues until engine is turned OFF.)

●

If the warning lamp flashes slowly during driving but remains OFF after engine is restarted, the system is
normal. If it again flashes slowly after driving for some time, vehicle must be inspected.

●

When the difference of revolution speed between the front and rear wheel with AUTO mode the shift occa-
sionally changes to LOCK mode automatically. This is not malfunction.

●

If there is a significant difference in pressure or wear between tires, full vehicle performance is not avail-
able. Tire conditions are detected, and LOCK mode may be prohibited, or else speeds at which LOCK
mode is enabled may be restricted.

AWD LOCK INDICATOR LAMP

The following is the indications of indicator lamp.

AWD WARNING LAMP

Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle
change to front-wheel drive or shifting driving force-AWD (Rear-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.

AWD Warning Lamp Indication

Condition

AWD LOCK indicator lamp

AUTO mode

OFF

LOCK mode

Lamp check

Turns ON for approx. 1 second when ignition switch is turned ON.

SDIA2330E

Condition

AWD warning lamp

Lamp check

Turns ON when ignition switch is turned ON. Turns OFF

approx. 1 seconds after engine start.

AWD system malfunction

TF-12

AWD SYSTEM

Revision: 2004 November

2004 Murano

System Diagram

ADS000V9

Protection function is activated due to heavy load to electric con-
trolled coupling. (AWD system is not malfunctioning and AWD system
changes to 2WD mode.)

Rapid flashing: 2 times/second

(Flashing in approx. 1 minute and then turning OFF.)

Large difference in diameter of front/rear tires

Slow flashing: 1 time/2 seconds

(Continuing to flash until turning ignition switch OFF)

Other than above (system normal)

OFF

Condition

AWD warning lamp

SDIA2329E

AWD SYSTEM

TF-13

Revision: 2004 November

2004 Murano

COMPONENTS FUNCTION DESCRIPTION

CAN Communication

ADS000VA

SYSTEM DESCRIPTION

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
For details, refer to

LAN-8, "CAN Communication Unit"

Component parts

Function

AWD control unit

●

Controls driving force distribution by signals from each sensor and switch from front wheel driving
mode (100:0) to AWD mode (50:50).

●

2WD mode is available by fail-safe function if malfunction is detected in AWD system.

Wheel sensors

Detects wheel speed.

AWD solenoid

Controls electric controlled coupling by command current from AWD control unit.

Electric controlled coupling

Transmits driving force to rear final drive.

AWD lock switch

Able to select AUTO or LOCK mode.

AWD warning lamp

●

Illuminates if malfunction is detected in electrical system of AWD system.

●

There is 1 blink in 2 seconds if rotation difference of front wheels and rear wheels is large.

●

There are 2 blinks in 1 second if load is still applied to driving parts.

AWD LOCK indicator lamp

Illuminates in LOCK mode (direct AWD mode) and does not illuminate in AUTO mode.

ABS actuator and electric unit
(control unit)

Transmits the following signals via CAN communication to AWD control unit.

●

Vehicle speed signal

●

Stop lamp switch signal (brake signal)

ECM

Transmits the following signals via CAN communication to AWD control unit.

●

Accelerator pedal position signal

●

Engine speed signal

Unified meter and A/C amp.

Transmits conditions of AWD lock switch and parking brake switch via CAN communication to AWD
control unit.

TF-14

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

TROUBLE DIAGNOSIS

PFP:00004

Fail-Safe Function

ADS000WI

●

If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warn-
ing lamp on combination meter turns ON to indicate system malfunction.

●

When AWD warning lamp is ON, vehicle changes to front-wheel drive or shifting driving force-AWD (Rear-
wheels still have some driving torque).

How to Perform Trouble Diagnosis

ADS000WJ

BASIC CONCEPT

●

To perform trouble diagnosis, it is the most important to have understanding about vehicle systems (con-
trol and mechanism) thoroughly.

●

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptoms by driving vehicle with
customer.

CAUTION:

Customers are not professional. It is dangerous to make an
easy guess like "maybe the customer means that...," or
"maybe the customer mentions this symptom".

●

It is essential to check symptoms right from the beginning in
order to repair malfunctions completely.
For intermittent malfunctions, reproduce symptoms based on
interview with customer and past examples. Do not perform
inspection on ad hoc basis. Most intermittent malfunctions are
caused by poor contacts. In this case, it will be effective to shake
suspected harness or connector by hand. When repairing with-
out any symptom diagnosis, you cannot judge if malfunctions
have actually been eliminated.

●

After completing diagnosis, always erase diagnostic memory.
Refer to

TF-24, "How to Erase Self-diagnostic Results"

●

For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or reproduced open circuit.

SEF233G

SEF234G

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