Nissan Murano Z50 (2007 year). Manual - part 187

 

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Nissan Murano Z50 (2007 year). Manual - part 187

 

 

PREPARATION

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ST30720000
(J-25405)
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
(J-25805-01)
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
(J-35870)
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

ZZA1003D

ZZA1003D

ZZA1141D

TF-8

PREPARATION

Revision: 2006 July

2007 Murano

Commercial Service Tools

NDS00070

KV38100300
(J-25523)
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
(J-26082)
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
(J-26010-01)
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

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

NDS00071

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-

1

0

TF-

5

4

TF-

5

4

TF-

5

4

TF-

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3

TF-

6

3

SUSPECTED PARTS
(Possible cause)

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

-R

IN

G

 (

W

o

rn 

or

 d

a

m

aged

)

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

2

TF-10

TRANSFER OIL

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TRANSFER OIL

PFP:KLD30

Replacement

NDS00072

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

TF-54, "COMPO-

NENTS"

 .

Use Genuine Silicone RTV or equivalent. Refer to 

GI-46,

"Recommended Chemical Products and Sealants"

 .

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

TF-54, "COMPO-

NENTS"

 .

Use Genuine Silicone RTV or equivalent. Refer to 

GI-46,

"Recommended Chemical Products and Sealants"

 .

Inspection

NDS00073

OIL LEAKAGE AND OIL LEVEL

1.

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

CAUTION:

Do not start engine while checking oil level.

2.

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

TF-54,

"COMPONENTS"

 .

Use Genuine Silicone RTV or equivalent. Refer to 

GI-46,

"Recommended Chemical Products and Sealants"

 .

SDIA1507E

Oil capacity

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

SDIA1508E

SDIA1508E

AWD SYSTEM

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AWD SYSTEM

PFP:41650

Power Transfer Diagram

NDS00074

System Description

NDS00075

ELECTRIC CONTROLLED COUPLING
Operation Principle

1.

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

2.

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

3.

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

4.

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

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

Self-diagnosis results can be read with CONSULT-II.

SDIA1607E

SDIA2035E

SDIA1844E

SDIA2341E

TF-12

AWD SYSTEM

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2007 Murano

AWD LOCK SWITCH
AUTO Mode 

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

AUTO mode makes stable driving possible, with no wheel spin, on snowy roads or other slippery sur-
faces.

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

Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by dis-
tributing optimum torque to the rear wheels.

LOCK Mode 

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.The AWD LOCK indicator
lamp keeps illuminating.

LOCK mode will change to AUTO mode automatically, when the vehicle speed exceeds approx. 10 km/h
(6 MPH) for a long time. The AWD LOCK indicator lamp turns off.

When the vehicle speed exceeds approx. 10 km/h (6 MPH), AUTO mode cannot be shifted to LOCK
mode. In contrast, LOCK mode can be shifted to AUTO mode. 

LOCK mode will change to AUTO mode automatically, when the ignition switch is turned “OFF”.

NOTE:

Every time AWD LOCK switch is pressed, AUTO mode and LOCK mode switch each other. 

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.

If there is a difference of revolution speed between the front and rear wheel with AUTO mode the shift
occasionally 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 in 1
seconds after the engine starts if system is normal.

Condition

AWD LOCK indicator lamp

AUTO mode

OFF

LOCK mode

ON

Lamp check

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

SDIA2330E

AWD SYSTEM

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AWD Warning Lamp Indication

System Diagram

NDS00076

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

ON

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

SDIA2329E

TF-14

AWD SYSTEM

Revision: 2006 July

2007 Murano

COMPONENTS FUNCTION DESCRIPTION

CAN Communication

NDS00077

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-49, "CAN System Specification Chart"

 .

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.

TROUBLE DIAGNOSIS

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TROUBLE DIAGNOSIS

PFP:00004

Fail-Safe Function

NDS00078

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

NDS00079

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-25, "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

TF-16

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

Location of Electrical Parts

NDS0007A

SDIA3016E

TROUBLE DIAGNOSIS

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Circuit Diagram

NDS0007B

TDWB0013E

TF-18

TROUBLE DIAGNOSIS

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2007 Murano

Wiring Diagram — AWD —

NDS0007C

TDWB0014E

TROUBLE DIAGNOSIS

TF-19

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TDWB0015E

TF-20

TROUBLE DIAGNOSIS

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2007 Murano

TDWB0016E

TROUBLE DIAGNOSIS

TF-21

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TDWB0017E

TF-22

TROUBLE DIAGNOSIS

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2007 Murano

Trouble Diagnosis Chart for Symptoms

NDS0007D

If AWD warning lamp turns ON, perform self-diagnosis. Refer to 

TF-24, "SELF-DIAG RESULT MODE"

 .

NOTE:

Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not malfunction.

Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: LOCK mode, steering
wheel is turned fully to either sides, and accelerator pedal is depressed.

Symptom

Condition

Check item

Reference page

AWD LOCK indicator lamp does not turn 
ON for approx. 1 second when the ignition 
switch is turned to ON.
(AWD LOCK indicator lamp check)

Ignition switch: ON

CAN communication line

TF-38

Power supply and ground for AWD con-
trol unit

Unified meter and A/C amp.

Unified meter control unit

AWD warning lamp does not turn ON when 
the ignition switch is turned to ON.
(AWD warning lamp check)

Ignition switch: ON

CAN communication line

TF-40

Unified meter and A/C amp.

Unified meter control unit

AWD warning lamp does not turn OFF sev-
eral seconds after engine started.

Engine running

CAN communication line

TF-41

Power supply and ground for AWD con-
trol unit

Unified meter and A/C amp.

Unified meter control unit

AWD solenoid

AWD actuator relay (integrated in AWD 
control unit)

Wheel sensor

AWD mode cannot be switched after engine 
is started.

Engine running

AWD lock switch

TF-43

CAN communication line

Unified meter and A/C amp.

Unified meter control unit

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. (See 
NOTE.)

While driving

AUTO mode

Steering wheel is 
turned fully to either 
sides

CAN communication line

TF-45

AWD lock switch

Accelerator pedal position signal

AWD solenoid

Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)

Vehicle does not enter AWD mode even 
though AWD warning lamp turned to OFF.

Vehicle speed: 10 km/h 
(6 MPH) or less

AWD solenoid

TF-46

Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)

Vehicle speed: 10 km/h 
(6 MPH) or more

Operating condition of parking brake

AWD solenoid

Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)

While driving, AWD warning lamp flashes 
rapidly. (When flashing in approx. 1 minute 
and then turning OFF.)
Rapid flashing: 2 times/second

While driving

Protection function is activated due to 
heavy load to electric controlled cou-
pling. (AWD system is not malfunction-
ing.)

TF-47

While driving, AWD warning lamp flashes 
slowly. (When continuing to flash until turn-
ing ignition switch OFF)
Slow flashing: 1 time/2 seconds

While driving

Vehicle speed: 20 km/h 
(12 MPH) or more

Tire size is different between front and 
rear of vehicle.

TF-47

 

 

 

 

 

 

 

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