Nissan Murano Z50 (2003 year). Manual - part 275

SRS-60

COLLISION DIAGNOSIS

Revision; 2004 April

2003 Murano

Seat with front side 
air bag

REPLACE all parts of 
front seatback 
(including front seat-
back frame)

1. Visually check the seat on the collision side.

2. Remove the seat on the collision side and check the following for damage and 

deformities.

–

Harness, connectors and terminals

–

Frame and recliner (for front and rear seat), and also adjuster and slides (for front 
seat)

3. If no damage is found, reinstall the seat.

4. If damaged—REPLACE the damaged seat parts using new bolts.

Center inner pillar

1. Check the center inner pillar on the collision side for damage (dents, cracks, deformation).

2. If damaged—REPAIR the center inner pillar.

Trim/headlining

1. Check for visible signs of damage (dents, cracks, deformation) of the interior trim on the collision side.

2. If damaged—REPLACE the damaged trim parts.

Part

Front side air bag and 

side curtain air bag is 

activated

Front side air bag and side curtain air bag is NOT activated

TF-1

TRANSFER

D  DRIVELINE/AXLE

CONTENTS

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SECTION 

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TRANSFER

PRECAUTIONS .......................................................... 3

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions .............................................................. 3
Service Notice  .......................................................... 4
Wiring Diagrams and Trouble Diagnosis .................. 4

PREPARATION ........................................................... 5

Special Service Tools  ............................................... 5

NOISE, VIBRATION AND HARSHNESS (NVH) 
TROUBLESHOOTING ................................................ 8

NVH Troubleshooting Chart  ..................................... 8

TRANSFER OIL .......................................................... 9

Replacement ............................................................ 9

DRAINING ............................................................. 9
FILLING ................................................................. 9

Inspection ................................................................. 9

OIL LEAKAGE AND OIL LEVEL  ........................... 9

SIDE OIL SEAL  ........................................................ 10

Removal and Installation  ........................................ 10

REMOVAL ........................................................... 10
INSTALLATION ................................................... 10

AIR BREATHER HOSE  .............................................11

Removal and Installation  .........................................11

TRANSFER ASSEMBLY  .......................................... 12

Removal and Installation  ........................................ 12

REMOVAL ........................................................... 12
INSTALLATION ................................................... 12

Components ........................................................... 13
Pre- Inspection  ....................................................... 14

BACKLASH ......................................................... 14
TOOTH CONTACT .............................................. 14
PRELOAD TORQUE ........................................... 16
COMPANION FLANGE RUNOUT  ...................... 17

Disassembly and Assembly  ................................... 18

DISASSEMBLY ................................................... 18
INSPECTION ...................................................... 22
SELECTING ADJUSTING SHIMS  ...................... 23
ASSEMBLY ......................................................... 24

AWD SYSTEM  .......................................................... 30

System Component  ................................................ 30
System Description ................................................. 30

ELECTRIC CONTROLLED COUPLING  ............. 30
AWD CONTROL UNIT  ........................................ 30
AWD LOCK SWITCH  .......................................... 30
AWD WARNING LAMP  ....................................... 31
FAIL- SAFE FUNCTION  ...................................... 31

System Diagram  ..................................................... 32
CAN Communication  .............................................. 33

SYSTEM DESCRIPTION  .................................... 33
CAN COMMUNICATION UNIT ............................ 33

Circuit Diagram ....................................................... 44
Wiring Diagram ....................................................... 45

TROUBLE DIAGNOSIS  ............................................ 49

Fail-Safe Function  .................................................. 49
How to Proceed with Trouble Diagnosis ................. 49

BASIC CONCEPT  ............................................... 49

Trouble Diagnosis Chart for Symptoms .................. 50
AWD Control Unit Input/Output Signal Reference 
Value ....................................................................... 51

AWD CONTROL UNIT CONNECTOR TERMI-
NAL LAYOUT  ...................................................... 51
REFERENCE STANDARD TABLE ...................... 51

CONSULT-II Functions  ........................................... 53

FUNCTION .......................................................... 53
CONSULT-II FUNCTION APPLICATION TABLE ... 53
SELF-DIAGNOSIS .............................................. 53
DATA MONITOR  ................................................. 54
ACTIVE TEST MODE  ......................................... 56
AWD CONTROL UNIT PART NUMBER  ............. 56

Component Inspection ............................................ 56

AWD SOLENOID VALVE ..................................... 56

System Inspection  .................................................. 57

CONTROL UNIT POWER SUPPLY AND 
GROUND ............................................................ 57
AWD CONTROL UNIT SYSTEM  ........................ 58
ABS SYSTEM  ..................................................... 58
AWD ACTUATOR SYSTEM  ................................ 59
AWD WARNING LAMP SYSTEM  ....................... 59
AWD LOCK SWITCH SIGNAL CIRCUIT  ............ 59

TF-2

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AWD SOLENOID SYSTEM  ................................. 61
CAN COMMUNICATION SYSTEM  ..................... 63

Trouble Diagnosis for Symptoms ............................ 64

AWD LOCK INDICATOR LAMP DOES NOT 
COME ON FOR APPROXIMATELY 1 SECOND 
WHEN THE IGNITION SWITCH IS TURNED TO 
ON. ...................................................................... 64
AWD WARNING LAMP DOES NOT ILLUMINATE 
WITH IGNITION SWITCH ON.  ............................ 65
AWD WARNING LAMP DOES NOT GO OUT 
SEVERAL SECONDS AFTER ENGINE 
STARTED.(AWD LOCK INDICATOR LAMP 
GOES OUT.) ........................................................ 66
HEAVY TIGHT-CORNER BRAKING SYMPTOM 
OCCURS WHEN THE VEHICLE IS DRIVEN IN 
AUTO MODE AND THE STEERING WHEEL IS 
TURNED FULLY TO EITHER SIDE AFTER THE 
ENGINE IS STARTED.  ........................................ 66
AWD MODE CANNOT BE SWITCHED AFTER 

ENGINE IS STARTED.  ........................................68
WHILE DRIVING, AWD WARNING LAMP 
FLASHES RAPIDLY. (WHEN IT FLASHES FOR 
APPROX. ONE MINUTE, THEN DOES NOT 
ILLUMINATE.) ......................................................68
WHILE DRIVING, AWD WARNING LAMP 
FLASHES SLOWLY. (WHEN IT CONTINUES TO 
ILLUMINATE UNTIL ENGINE TURNS OFF.)  ......68
VEHICLE DOES NOT ENTER AWD MODE 
EVEN THOUGH AWD WARNING LAMP IS OFF. ...69

SERVICE DATA AND SPECIFICATIONS (SDS)  ......72

General Specifications  ............................................72
Inspection and Adjustment ......................................72

PRELOAD TORQUE BEFORE DISASSEMBLY ...72
PRELOAD TORQUE AFTER DISASSEMBLY 
AND REASSEMBLY  ............................................72
BACKLASH ..........................................................72
COMPANION FLANGE RUNOUT  .......................72
SELECTIVE PARTS  ............................................72

PRECAUTIONS

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PRECAUTIONS

PFP:00001

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

ADS000KR

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 

ADS000KT

●

Before connecting or disconnecting the AWD control unit
harness connector, turn ignition switch “OFF” and discon-
nect negative battery 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
not any 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. 

TF-51, "AWD

Control Unit Input/Output Signal Reference Value"

.

SEF289H

SEF291H

SDIA1848E

TF-4

PRECAUTIONS

Revision; 2004 April

2003 Murano

Service Notice

ADS000GI

●

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

●

Disassembly should be done in a clean work area.

●

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

●

Place disassembled parts in order for easier and proper assembly.

●

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

●

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

●

It is very important to perform functional tests whenever they are indicated.

●

Before assembly, apply a coat of recommended transfer oil to all parts. Apply petroleum jelly to protect O-
rings and seals, and to hold bearings and washers in place during assembly. Do not use grease. 

●

Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

●

After overhaul refill the transfer with new transfer oil.

Wiring Diagrams and Trouble Diagnosis

ADS000KU

When you read wiring diagrams, refer to the following:

●

GI-14, "How to Read Wiring Diagrams"

.

●

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

.

When you perform 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

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PREPARATION

PFP:00002

Special Service Tools

ADS000GJ

Tool number (Kent-Moore No.)
Tool name

Description

KV38101700 (

—

)

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

Installing side oil seal (installing adapter case 
oil seal)

ST3127S000 (J25765-A)
Preload gauge

Measuring preload torque

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

Removing drive pinion 

KV381054S0 (J34286)
Puller

●

Removing pinion bearing outer race

●

Removing gear ring oil seal

ST30031000 (J22912-01)
Replacer

Removing pinion bearing inner race

ST33200000 (J26082)
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.75 in) dia.
Drift

●

Removing gear ring bearing inner race on 
adapter case

●

Installing companion flange

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

Removing gear ring bearing inner race on 
gear ring

ZZA1149D

ZZA0503D

ZZA1046D

ZZA0601D

ZZA0700D

ZZA1002D

ZZA0810D

TF-6

PREPARATION

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

●

Installing gear ring bearing outer race on 
transfer case

●

Installing transfer case oil seal

●

Installing gear ring bearing inner race on 
transfer case

●

Installing gear ring bearing inner race on 
adapter case

●

Installing gear ring bearing outer race on 
adapter case

KV40101840 (

—

)

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

Installing gear ring bearing outer race on 
transfer case

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

Installing gear ring oil seals

ST27863000 (

—

)

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

Installing gear ring bearing inner race on 
transfer case

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

Installing gear bearing inner race on transfer 
case

KV38102510 (

—

)

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

Installing gear ring bearing inner race on 
adapter case

KV40105230 (

—

)

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

Installing gear ring bearing outer race on 
adapter case

Tool number (Kent-Moore No.)
Tool name

Description

ZZA0811D

ZZA0881D

ZZA1046D

ZZA1003D

ZZA1003D

ZZA1003D

ZZA1141D

PREPARATION

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

Installing pinion rear bearing outer race on 
adapter case

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

●

Installing pinion front bearing outer race on 
adapter case

●

Installing pinion sleeve oil seals on adapter 
case

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

●

Installing pinion front bearing outer race on 
adapter case

●

Installing pinion front bearing inner race on 
adapter case

Tool number (Kent-Moore No.)
Tool name

Description

ZZA1046D

ZZA0814D

ZZA0978D

TF-8

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

ADS000GK

Use the chart below to help you find the cause of the malfunction.The numbers indicate the order of the
inspection. If necessary, repair or replace these parts. 

Reference page

TF-

9

TF-

1

3

TF-

1

3

TF-

2

2

TF-

2

2

Possible cause and Suspected parts

TRANSFER 

OI

L

 (

Lev

el low)

TR

AN

SFER

 O

IL

 (

W

rong)

TR

AN

SFER

 O

IL

 (

Lev

el

 t

oo 

hi

gh)

LIQUI

D

 GASKET (

D

a

m

a

g

ed)

O

IL

 SE

AL (

W

o

rn 

or

 d

a

m

a

ged

)

G

EAR

 (

W

o

rn or

 d

a

m

aged

)

BEARING 

(W

or

n or

 da

m

a

ged)

Symptom

Noise

1

2

3

3

Transfer oil leakage

3

1

2

2

TRANSFER OIL

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TRANSFER OIL

PFP:KLD30

Replacement

ADS000GL

DRAINING

CAUTION:

When draining oil, protect exhaust tube flange with cover.

1.

Run the vehicle to warm up the transfer body sufficiently.

2.

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

3.

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

TF-13,

"Components"

 .

FILLING

1.

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)

2.

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

3.

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

TF-13,

"Components"

 .

Inspection

ADS000GM

OIL LEAKAGE AND OIL LEVEL

1.

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

2.

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

TF-13, "Components"

 .

SDIA1507E

Oil capacity

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

SDIA1508E

SDIA1508E

TF-10

SIDE OIL SEAL

Revision; 2004 April

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SIDE OIL SEAL

PFP:33142

Removal and Installation

ADS000GN

REMOVAL

1.

Remove the drive shaft. Refer to 

FAX-8, "Removal and Installation (Right Side)"

 , 

FAX-7, "Removal and

Installation (Left Side)"

 .

2.

Remove oil seal with a flat-bladed screwdriver.

CAUTION:

Be careful not to damage the adapter case.

INSTALLATION

1.

Apply multi-purpose grease to oil seal lips. As shown in the fig-
ure, using a drift, install the oil seal so that it becomes flush with
the case end surface.

CAUTION:

●

Discard old oil seals, replace with new ones.

●

When installing, do not incline the oil seal.

2.

Install the drive shaft. Refer to 

FAX-8, "Removal and Installation

(Right Side)"

 , 

FAX-7, "Removal and Installation (Left Side)"

 .

CAUTION:

Be careful not to damage the oil seals.

3.

Check oil level. Refer to 

TF-9, "TRANSFER OIL"

 .

SDIA1546E

Tool number

: KV38101700 (

—

)

SDIA1547E

AIR BREATHER HOSE

TF-11

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AIR BREATHER HOSE

PFP:31098

Removal and Installation

ADS000GO

●

 Refer to the figure for air breather hose removal and installation information.

CAUTION:

●

Be sure to insert air breather hose into transfer tube (metal connector) until hose end reaches the
tube's base.

●

Make sure there are no pinched or restricted areas on the air breather hose caused by bending or
winding when installing it.

SDIA1511E

TF-12

TRANSFER ASSEMBLY

Revision; 2004 April

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TRANSFER ASSEMBLY

PFP:33100

Removal and Installation

ADS000GP

REMOVAL

Remove the engine assembly. Refer to 

EM-95, "ENGINE ASSEMBLY"

 .

1.

Remove gusset mounting bolts, and then remove gusset from engine and transaxle.

2.

Remove transfer mounting bolts and separate transfer from transaxle.

CAUTION:

After removing transfer from transaxle, be sure to replace differential side oil seal of the transaxle side
with new one. Refer to 

CVT-191, "DIFFERENTIAL SIDE OIL SEAL"

 .

INSTALLATION

Note the following, and install in the reverse order of removal.

●

When installing the transfer to the transaxle, install the mounting
bolts following the standard below.

CAUTION:

When installing the transfer to the transaxle, be careful not
to damage the oil seals.

●

After the installation, check the oil level and for oil leakage. Refer to 

TF-9, "TRANSFER OIL"

 .

1.

Transfer assembly

2.

Transaxle assembly

3.

Rear gusset

4.

Transfer gusset

SDIA1491E

Bolt No.

1

2

Quantity

4

2

Nominal length

mm (in)

65 (2.56)

40 (1.57)

Tightening torque
[N·m (kg·m, ft.-lb.)]

29.4 - 39.2 (3.0 - 3.9, 22 - 28)

SDIA1510E

TRANSFER ASSEMBLY

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Components

ADS000GQ

1.

Oil seal

2.

Bolt

3.

Drain plug

4.

Adapter case

5.

O-ring

6.

Oil gutter

7.

Adjusting shim

8.

Gear ring bearing

9.

Inner race

10. Outer race

11.

Drive gear bolt

12. Gear ring

13. Drive gear

14. Filler plug

15. Oil defense

16. Transfer case

17. Breather tube

18. Plug

19. Pinion sleeve shim

20. Drive pinion

21. Pinion front bearing

22. Collapsible spacer

23. Pinion sleeve

24. Dust cover

25. Pinion rear bearing

26. Companion flange

27. pinion nut

SDIA1985E

TF-14

TRANSFER ASSEMBLY

Revision; 2004 April

2003 Murano

Pre- Inspection

ADS000GR

BACKLASH

1.

Install a bolt to the companion flange.

2.

Fit a dial gauge onto the bolt.

3.

Measure the circumference backlash of the companion flange,
and make sure it satisfies the standard below.

●

If measured value is out of the specification, disassemble it to
check and adjust each part.

TOOTH CONTACT

1.

Remove the pinion sleeve assembly. Refer to 

TF-18, "Pinion Sleeve Assembly"

 .

2.

Apply red lead to the drive gear.

CAUTION:

Apply red lead to both the faces of 3 to 4 gears at 4 loca-
tions evenly spaced on the drive gear.

3.

Install the pinion sleeve shims and pinion sleeve assembly.

4.

Remove the plug on the upper side of the transfer case.
When installing plug, apply recommended sealant on screw
part, and tighten it at the specified torque.

5.

Rotate the companion flange back and forth several times, and
check the drive pinion gear to drive gear tooth contact by view-
ing from the plug hole.

Backlash

: 0.13 - 0.19 mm (0.0051 - 0.0075 in)

SDIA1523E

Tightening torque 

 

: 15 - 19 N·m (1.6 - 1.9 kg-m, 11 - 14 ft-lb)

SDIA1524E

SDIA1525E

TRANSFER ASSEMBLY

TF-15

C

E

F

G

H

I

J

K

L

M

A

B

TF

Revision; 2004 April

2003 Murano

6.

If tooth contact is poorly adjusted, adjust pinion height (dimen-
sion X) in the following manner.

SDIA0520E

SDIA0517E