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Nissan Murano Z50 (2007 year). Manual - part 44

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

BRC-99

[VDC/TCS/ABS]

BRC

Revision: 2006 July

2007 Murano

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

PFP:47660

Removal and Installation

NFS000HA

Pay attention to the following when removing actuator.

CAUTION:

●

If the part number on the part number label (pasted on actuator upper surface) is the same, ABS
actuator and electric unit (control unit) (integrated in control unit, part No.: 47660 *****) can not be
used on another vehicle.
If it is used on another vehicle, ABS warning lamp, SLIP indicator lamp, VDC OFF indicator lamp
may turn ON or VDC/TCS/ABS may not operate normally.
When replacing ABS actuator and electric unit (control unit) (integrated in control unit), must use
new service parts.

●

Before servicing, disconnect battery cables.

●

To remove brake tube, use flare nut torque wrench to prevent flare nuts and brake tube from being
damaged. To install, use flare nut wrench (commercial service tool).

●

Do not remove and install actuator by holding harness.

●

After work is completed, bleed air from brake piping. Refer to

BR-13, "Bleeding Brake System"

NOTE:

●

After performing above works, calibrate decel G sensor (AWD model). Refer to

BRC-47, "Calibration of

Decel G Sensor"

PFIA0800E

To front left

To rear right

To rear left

To front right

From master cylinder secondary
side

From master cylinder primary side

ABS actuator and electric unit (con-
trol unit)

Harness connector

BRC-100

[VDC/TCS/ABS]

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

Revision: 2006 July

2007 Murano

●

In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust position of
steering angle sensor. Refer to

BRC-46, "Adjustment of Steering Angle Sensor Neutral Position"

G SENSOR

BRC-101

[VDC/TCS/ABS]

BRC

Revision: 2006 July

2007 Murano

G SENSOR

PFP:47930

Removal and Installation

NFS000HB

REMOVAL

Remove center console. Refer to

IP-17, "CENTER CONSOLE

ASSEMBLY"

Disconnect harness connector.

Remove mounting nuts. Remove yaw rate/side/decel G sensor.

CAUTION:

●

Do not drop or strike the yaw rate/side/decel G sensor,
because it has little endurance to impact.

●

Do not use power tool etc., because yaw rate/side/decel G
sensor is weak for the impact.

INSTALLATION

Installation is in the revers order of removal.

CAUTION:

●

Do not drop or strike the yaw rate/side/decel G sensor, because it has little endurance to impact.

NOTE:

●

After performing above work, calibrate decel G sensor (AWD model). Refer to

BRC-47, "Calibration of

Decel G Sensor"

PFIA0450E

BRC-102

[VDC/TCS/ABS]

STEERING ANGLE SENSOR

Revision: 2006 July

2007 Murano

STEERING ANGLE SENSOR

PFP:25554

Removal and Installation

NFS000HC

Refer to

SRS-45, "SPIRAL CABLE"

NOTE:

●

Steering angle sensor is built into the spiral cable.

●

In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust position of
steering angle sensor. Refer to

BRC-46, "Adjustment of Steering Angle Sensor Neutral Position"

CO-1

ENGINE COOLING SYSTEM

B ENGINE

CONTENTS

SECTION

Revision: 2006 July

2007 Murano

ENGINE COOLING SYSTEM

PRECAUTIONS .......................................................... 2

Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Liquid Gasket .................................. 2

REMOVAL OF LIQUID GASKET SEALING .......... 2
LIQUID GASKET APPLICATION PROCEDURE

..... 2

PREPARATION ........................................................... 4

Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4

OVERHEATING CAUSE ANALYSIS .......................... 5

Troubleshooting Chart .............................................. 5

COOLING SYSTEM .................................................... 7

Cooling Circuit .......................................................... 7
System Chart ........................................................... 8

ENGINE COOLANT .................................................... 9

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

LEVEL CHECK ..................................................... 9
LEAK CHECK ....................................................... 9

Changing Engine Coolant ........................................ 9

DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ..........................11

RADIATOR ................................................................ 13

Removal and Installation ........................................ 13

REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
INSPECTION AFTER INSTALLATION ............... 14

Checking Radiator Cap .......................................... 15
Checking Radiator .................................................. 15

RADIATOR (ALUMINUM TYPE) .............................. 16

Disassembly and Assembly ................................... 16

PREPARATION ................................................... 16
DISASSEMBLY ................................................... 16
ASSEMBLY ......................................................... 17
INSPECTION ...................................................... 19

COOLING FAN .......................................................... 20

Removal and Installation ........................................ 20

REMOVAL ........................................................... 20
INSTALLATION ................................................... 20
INSPECTION AFTER INSTALLATION ................ 20

Disassembly and Assembly .................................... 21

DISASSEMBLY ................................................... 21
INSPECTION AFTER DISASSEMBLY ................ 21
ASSEMBLY ......................................................... 21

WATER PUMP .......................................................... 22

Removal and Installation ........................................ 22

REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
INSPECTION AFTER INSTALLATION ................ 26

WATER INLET AND THERMOSTAT ASSEMBLY .... 27

Removal and Installation ........................................ 27

REMOVAL ........................................................... 27
INSPECTION AFTER REMOVAL ....................... 28
INSTALLATION ................................................... 28
INSPECTION AFTER INSTALLATION ................ 28

WATER OUTLET AND WATER PIPING ................... 29

Removal and Installation ........................................ 29

REMOVAL ........................................................... 29
INSTALLATION ................................................... 30
INSPECTION AFTER INSTALLATION ................ 30

SERVICE DATA AND SPECIFICATIONS (SDS) ...... 31

Standard and Limit .................................................. 31

ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 31
RADIATOR .......................................................... 31
THERMOSTAT .................................................... 31

CO-2

PRECAUTIONS

Revision: 2006 July

2007 Murano

PRECAUTIONS

PFP:00001

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

NBS002AD

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 Liquid Gasket

NBS002AE

REMOVAL OF LIQUID GASKET SEALING

●

After removing mounting bolts and nuts, separate the mating
surface using the seal cutter (SST) and remove old liquid gasket
sealing.

CAUTION:

Be careful not to damage the mating surfaces.

●

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

●

In areas where seal cutter is difficult to use, use a plastic ham-
mer to lightly tap the parts, to remove it.

CAUTION:

If for some unavoidable reason tool such as a screwdriver
is used, be careful not to damage the mating surfaces.

LIQUID GASKET APPLICATION PROCEDURE

Using a scraper, remove old liquid gasket adhering to the liquid
gasket application surface and the mating surface.

●

Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.

Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.

PBIC0002E

PBIC0003E

PRECAUTIONS

CO-3

Revision: 2006 July

2007 Murano

Attach liquid gasket tube to the tube presser [SST: WS39930000
(

—

)].

Use Genuine RTV Silicone Sealant or equivalent. Refer to

Apply liquid gasket without breaks to the specified location with
the specified dimensions.

●

If there is a groove for the liquid gasket application, apply liq-
uid gasket to the groove.

●

As for the bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of service manual.

●

Within five minutes of liquid gasket application, install the mat-
ing component.

●

If liquid gasket protrudes, wipe it off immediately.

●

Do not retighten after the installation.

●

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.

CAUTION:

If there are specific instructions in this manual, observe them.

EMA0622D

SEM159F

CO-4

PREPARATION

Revision: 2006 July

2007 Murano

PREPARATION

PFP:00002

Special Service Tools

NBS002AF

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

Commercial Service Tools

NBS002AG

Tool number
(Kent-Moore No.)
Tool name

Description

EG17650301
(J33984-A)
Radiator cap tester adapter

Adapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

KV99103510
(

—

)

Radiator plate pliers A

Installing radiator upper and lower tanks

KV99103520
(

—

)

Radiator plate pliers B

Removing radiator upper and lower tanks

WS39930000
(

—

)

Tube pressure

Pressing the tube of liquid gasket

S-NT564

S-NT224

S-NT225

S-NT052

Tool name

Description

Power tool

Loosening nuts and bolts

Radiator cap tester

Checking radiator and radiator cap

PBIC0190E

PBIC1982E

OVERHEATING CAUSE ANALYSIS

CO-5

Revision: 2006 July

2007 Murano

OVERHEATING CAUSE ANALYSIS

PFP:00012

Troubleshooting Chart

NBS002AH

Symptom

Check items

Cooling sys-
tem parts
malfunction

Poor heat transfer

Water pump malfunction

Worn or loose drive belt

—

Thermostat stuck closed

—

Damaged fins

Dust contamination or
paper clogging

Physical damage

Clogged radiator cooling
tube

Excess foreign material
(rust, dirt, sand, etc.)

Reduced air flow

Cooling fan does not oper-
ate

Fan assembly

—

High resistance to fan rota-
tion

Damaged fan blades

Damaged radiator shroud

—

Improper engine coolant
mixture ratio

—

Poor engine coolant quality

—

Engine coolant viscosity

—

Insufficient engine coolant

Engine coolant leaks

Cooling hose

Loose clamp

Cracked hose

Water pump

Poor sealing

Radiator cap

Loose

Poor sealing

Radiator

O-ring for damage, deterio-
ration or improper fitting

Cracked radiator tank

Cracked radiator core

Reservoir tank

Cracked reservoir tank

Overflowing reservoir tank

Exhaust gas leaks into
cooling system

Cylinder head deterioration

Cylinder head gasket dete-
rioration

CO-6

OVERHEATING CAUSE ANALYSIS

Revision: 2006 July

2007 Murano

Except cool-
ing system
parts mal-
function

—

Overload on engine

Abusive driving

High engine rpm under no
load

Driving in low gear for
extended time

Driving at extremely high
speed

Powertrain system mal-
function

—

Installed improper size
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air
flow

Blocked bumper

—

Blocked radiator grille

Installed car brassiere

Mud contamination or
paper clogging

Blocked radiator

—

Blocked condenser

Blocked air flow

Installed large fog lamp

Symptom

Check items

COOLING SYSTEM

CO-7

Revision: 2006 July

2007 Murano

COOLING SYSTEM

PFP:21020

Cooling Circuit

NBS002AI

PBIC2692E

CO-8

COOLING SYSTEM

Revision: 2006 July

2007 Murano

System Chart

NBS002AJ

PBIC2693E

ENGINE COOLANT

CO-9

Revision: 2006 July

2007 Murano

ENGINE COOLANT

PFP:KQ100

Inspection

NBS002AK

LEVEL CHECK

●

Check if the reservoir tank engine coolant level is within the
“MIN” to “MAX” range when the engine is cool.

●

Adjust the coolant level as necessary.

LEAK CHECK

●

To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) and the radiator
cap tester adapter (SST).

WARNING:

Do not remove radiator cap when the engine is hot. Serious
burns could occur from high pressure engine coolant
escaping from the radiator.

CAUTION:

Higher testing pressure than specified may cause radiator
damage.

NOTE:
In case that engine coolant decreases, replenish radiator with engine coolant.

●

If anything is found, repair or replace damaged parts.

Changing Engine Coolant

NBS002AL

WARNING:

●

To avoid being scalded, do not change engine coolant when the engine is hot.

●

Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressure. Then turn radiator cap all the way.

CAUTION:

Be careful not to allow engine coolant to contact drive belts.

DRAINING ENGINE COOLANT

Remove radiator drain hole cap on undercover.

Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.

SMA412B

Testing pressure

: 157 kPa (1.6 kg/cm

, 23 psi)

SLC756A

PBIC1204E

CO-10

ENGINE COOLANT

Revision: 2006 July

2007 Murano

When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to

EM-115, "DISASSEMBLY"

Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to

CO-11, "FLUSHING COOLING SYSTEM"

REFILLING ENGINE COOLANT

NOTE:
When engine coolant is drained from radiator only, step 3, 4 and 6 are unnecessary.

Install reservoir tank if removed, and radiator drain plug.

CAUTION:

Be sure to clean drain plug and install with new O-ring.

If water drain plug on cylinder block are removed, close and tighten them. Refer to

EM-120,

"ASSEMBLY"

Make sure that each hose clamp has been firmly tightened.

Remove air duct assembly. Refer to

EM-16, "AIR CLEANER AND AIR DUCT"

Disconnect heater hose (right side of vehicle) at the position in
the figure.

●

Enhance heater hose as high as possible.

Fill radiator, and reservoir tank if removed, to specified level.

●

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.

●

Use Genuine NISSAN Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to

CANTS"

PBIC1205E

Radiator drain plug:

: 0.78 - 1.56 N·m (0.08 - 0.16 kg-m, 7 - 14 in-lb)

PBIC2847E

Engine coolant capacity
(With reservoir tank at “MAX” level)

: Approximately 9.1 (9-5/8 US qt, 8 lmp qt)

SMA182B

ENGINE COOLANT

CO-11

Revision: 2006 July

2007 Murano

●

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant, if heater hose is disconnected.

Install air duct assembly. Refer to

EM-16, "AIR CLEANER AND AIR DUCT"

Install radiator cap.

Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.

●

Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.

CAUTION:

Watch water temperature gauge so as not to overheat engine.

Stop the engine and cool down to less than approximately 50

C (122

F).

●

Cool down using fan to reduce the time.

●

If necessary, refill radiator up to filler neck with engine coolant.

10. Refill reservoir tank to “MAX” level line with engine coolant.

11. Repeat steps 5 through 9 two or more times with radiator cap installed until engine coolant level no longer

drops.

12. Check cooling system for leaks with engine running.

13. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to

3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.

●

Sound may be noticeable at heater unit.

14. Repeat step 13 three times.
15. If sound is heard, bleed air from cooling system by repeating step 5 through 9 until engine coolant level no

longer drops.

FLUSHING COOLING SYSTEM

NOTE:
When engine coolant is drained from radiator only, step 2, 3 and 5 are unnecessary.
1.

Install reservoir tank if removed, and radiator drain plug.

If water drain plug on cylinder block are removed, close and tighten them. Refer to

EM-120,

"ASSEMBLY"

Remove air duct assembly. Refer to

EM-16, "AIR CLEANER AND AIR DUCT"

Disconnect heater hose (right side of vehicle) at the position in
the figure.

●

Enhance heater hose as high as possible.

Reservoir tank engine coolant capacity
(At “MAX” level)

: 0.8 (7/8 US qt, 3/4 lmp qt)

SMA412B

Radiator drain plug:

: 0.78 - 1.56 N·m (0.08 - 0.16 kg-m, 7 - 14 in-lb)

PBIC2847E

CO-12

ENGINE COOLANT

Revision: 2006 July

2007 Murano

Fill radiator and reservoir tank with water and install radiator cap.

●

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant, if heater hose is disconnected.

Install air duct assembly. Refer to

EM-16, "AIR CLEANER AND AIR DUCT"

Run the engine and warm it up to normal operating temperature.

Rev the engine two or three times under no-load.

Stop the engine and wait until it cools down.

Drain water from the system. Refer to

CO-9, "DRAINING ENGINE COOLANT"

10. Repeat steps 1 through 9 until clear water begins to drain from radiator.

Content .. 42 43 44 45 ..