Nissan Murano Z51 (2012 year). Manual

DESCRIPTION

CO-3

< SYSTEM DESCRIPTION >

SYSTEM DESCRIPTION

DESCRIPTION

Engine Cooling System

INFOID:0000000007542443

Engine Cooling System Schematic

INFOID:0000000007542444

JPBIA1682GB

JPBIA1683GB

Revision: 2013 February

2012 MURANO

CO-4

< SYMPTOM DIAGNOSIS >

OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000007542445

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 pa-
per 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 density

—

Insufficient engine coolant

Engine coolant leakage

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 leakage into
cooling system

Cylinder head deterioration

Cylinder head gasket deteri-
oration

Revision: 2013 February

2012 MURANO

OVERHEATING CAUSE ANALYSIS

CO-5

< SYMPTOM DIAGNOSIS >

Except cool-
ing system
parts mal-
function

—

Overload on engine

Abusive driving

High engine rpm under no
load

Driving in low gear for ex-
tended time

Driving at extremely high
speed

Powertrain system malfunc-
tion

—

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

Revision: 2013 February

2012 MURANO

CO-6

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

FOR USA AND CANADA

FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER"

INFOID:0000000007542446

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 AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

FOR USA AND CANADA : Liquid Gasket

INFOID:0000000007542447

REMOVAL OF LIQUID GASKET SEALING

• After removing mounting nuts and bolts, separate the mating sur-

face using the seal cutter [SST: KV10111100 (J-37228)] (A) and
remove old liquid gasket sealing.

CAUTION:

Be careful not to damage the mating surfaces.

• Tap (B) the seal cutter [SST: KV10111100 (J-37228)] to insert it,

and then slide (C) it by tapping on the side as shown in the figure.

• In areas where seal cutter [SST: KV10111100 (J-37228)] is difficult

to use, use a plastic hammer 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

JPBIA0052ZZ

Revision: 2013 February

2012 MURANO

PRECAUTIONS

CO-7

< PRECAUTION >

Using a scraper (A), remove old liquid gasket adhering to the liq-
uid 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.

Attach liquid gasket tube to the tube presser (commercial ser-
vice tool).
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 (B), normally apply liquid gasket inside

the holes. Occasionally, it should be applied outside the holes.
Check 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.
• Never retighten after mounting bolts and nuts 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.

FOR MEXICO

FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and
"SEAT BELT PRE-TENSIONER"

INFOID:0000000007542448

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. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

JPBIA0053ZZ

EMA0622D

: Groove

: Inside

JPBIA0010ZZ

Revision: 2013 February

2012 MURANO

CO-8

< PRECAUTION >

PRECAUTIONS

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

FOR MEXICO : Liquid Gasket

INFOID:0000000007542449

REMOVAL OF LIQUID GASKET SEALING

• After removing mounting nuts and bolts, separate the mating sur-

face using the seal cutter [SST: KV10111100 (J-37228)] (A) and
remove old liquid gasket sealing.

CAUTION:

Be careful not to damage the mating surfaces.

• Tap (B) the seal cutter [SST: KV10111100 (J-37228)] to insert it,

and then slide (C) it by tapping on the side as shown in the figure.

• In areas where seal cutter [SST: KV10111100 (J-37228)] is difficult

to use, use a plastic hammer 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 (A), remove old liquid gasket adhering to the liq-
uid 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.

Attach liquid gasket tube to the tube presser (commercial ser-
vice tool).
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.

JPBIA0052ZZ

JPBIA0053ZZ

EMA0622D

Revision: 2013 February

2012 MURANO

PRECAUTIONS

CO-9

< PRECAUTION >

• As for the bolt holes (B), normally apply liquid gasket inside

the holes. Occasionally, it should be applied outside the holes.
Check 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.
• Never retighten after mounting bolts and nuts 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.

: Groove

: Inside

JPBIA0010ZZ

Revision: 2013 February

2012 MURANO

CO-10

< PREPARATION >

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000007542450

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

Commercial Service Tools

INFOID:0000000007542451

Tool number
(Kent-Moore No.)
Tool name

Description

KV10111100
(J-37228)
Seal cutter

Removing water pump cover

NT046

Tool name

Description

Tube presser

Pressing the tube of liquid gasket

Power tool

Loosening nuts and bolts

Radiator cap tester

Checking radiator and radiator cap

Radiator cap tester adapter

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

S-NT052

PBIC0190E

PBIC1982E

S-NT564

Revision: 2013 February

2012 MURANO

ENGINE COOLANT

CO-11

< PERIODIC MAINTENANCE >

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

INFOID:0000000007542452

LEVEL

• Check if the reservoir tank engine coolant level is within the “MIN”

to “MAX” when the engine is cool.

• Adjust the engine coolant level if necessary.

CAUTION:

Refill Genuine NISSAN Long Life Antifreeze/Coolant (blue) or
equivalent in its quality mixed with water (distilled or demineral-
ized). Refer to

MA-16, "FOR NORTH AMERICA : Fluids and

Lubricants"

(FOR NORTH AMERICA). or

MA-17, "FOR MEXICO :

Fluids and Lubricants"

(FOR MEXICO).

LEAKAGE

• To check for leakage, apply pressure to the cooling system with the

radiator cap tester (commercial service tool) (A) and radiator cap
tester adapter (commercial service tool) (B).

WARNING:

Never remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
radiator.

CAUTION:

Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

• If anything is found, repair or replace damaged parts.

Draining

INFOID:0000000007542453

WARNING:

• To avoid being scalded, never 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.

Remove engine under cover.

Open radiator drain plug (1) at the bottom of radiator, and then
remove radiator cap.

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

EM-90, "Setting"

: MAX

: MIN

JPBIA0102ZZ

Testing pressure

: Refer to

CO-32, "Radiator"

PBIC5121J

: Vehicle front

JPBIA1684ZZ

Revision: 2013 February

2012 MURANO

CO-12

< PERIODIC MAINTENANCE >

ENGINE COOLANT

Remove reservoir tank if 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-13, "Flushing"

Refilling

INFOID:0000000007542454

CAUTION:

• Do not reuse O-rings.
• Do not put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality

mixed with water (distilled or demineralized). Refer to

MA-16, "FOR NORTH AMERICA : Fluids and

Lubricants"

(for North America) or Refer to

MA-17, "FOR MEXICO : Fluids and Lubricants"

(for Mex-

ico).

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 plugs on cylinder block are removed, close and tighten them. Refer to

EM-123, "Dis-

assembly and Assembly"

Check that each hose clamp has been firmly tightened.

Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to

EM-31, "Exploded

View"

Disconnect heater hose (1) at the position (

) in the figure.

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

CAUTION:

Never adhere the engine coolant to electronic equipments.
(alternator etc.)
• 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.

• When engine coolant overflows disconnected heater

hose, connect heater hose, and continue filling the engine
coolant.

Tightening torque

: Refer to

CO-16, "Exploded View"

: Vehicle front

JPBIA1685ZZ

JPBIA0412ZZ

Engine coolant capacity

: Refer to

CO-32, "Periodical Maintenance Spec-

ification"

(With reservoir tank at “MAX” level)

Reservoir tank engine coolant capacity

: Refer to

CO-32, "Periodical Maintenance

Specification"

(At “MAX” level)

Revision: 2013 February

2012 MURANO

ENGINE COOLANT

CO-13

< PERIODIC MAINTENANCE >

Install air duct assembly and air cleaner cases (upper and lower) assembly. Refer to

EM-31, "Exploded

View"

Install radiator cap.

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

CAUTION:

Never adhere the engine coolant to electronic equipments. (alternator etc.)

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

11. Repeat steps 7 through 10 two or more times with radiator cap installed until engine coolant level no

longer drops.

12. Check cooling system for leakage 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, and steps from 7 to 14 until engine

coolant level no longer drops.

Flushing

INFOID:0000000007542455

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 plugs on cylinder block are removed, close and tighten them. Refer to

EM-123, "Dis-

assembly and Assembly"

Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to

EM-31, "Exploded

View"

: MAX

: MIN

JPBIA0102ZZ

Tightening torque

: Refer to

CO-16, "Exploded View"

Revision: 2013 February

2012 MURANO

CO-14

< PERIODIC MAINTENANCE >

ENGINE COOLANT

Disconnect heater hose (1) at the position (

) in the figure.

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

CAUTION:

Never adhere the water to electronic equipments. (alternator etc.)
• When water overflows disconnected heater hose, connect heater hose, and continue filling the

water.

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-11, "Draining"

Repeat steps 1 through 8 until clear water begins to drain from radiator.

: Vehicle front

JPBIA1685ZZ

Revision: 2013 February

2012 MURANO

RADIATOR

CO-15

< PERIODIC MAINTENANCE >

RADIATOR

RADIATOR CAP

RADIATOR CAP : Inspection

INFOID:0000000007542456

• Check valve seat (A) of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the

plunger (B) cannot be seen when watching it vertically from the
top.

- Check if valve seat has no soil and damage.
- Check that there is no dirt or damage on the valve seat of radiator

cap negative-pressure valve.

- Check that there are no unusualness in the opening and closing

conditions of negative-pressure valve.

• Check radiator cap relief pressure.

- When connecting radiator cap to the radiator cap tester (commer-

cial service tool) and the radiator cap tester adapter (commercial
service tool) (A), apply engine coolant to the cap seal surface.

• Replace radiator cap if there is an unusualness related to the above three.

CAUTION:

When installing radiator cap, thoroughly wipe out the radiator pipe (upper) filler neck to remove any
waxy residue or foreign material.

RADIATOR

RADIATOR : Inspection

INFOID:0000000007542457

Check radiator for mud or clogging. If necessary, clean radiator as follows:

CAUTION:

• Be careful not to bend or damage radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan

assembly and horns. Then tape harness and connectors to prevent water from entering.

Apply water by hose to the back side of the radiator core vertically downward.

Apply water again to all radiator core surfaces once per minute.

Stop washing if any stains no longer flow out from radiator.

Blow air into the back side of radiator core vertically downward.
• Use compressed air lower than 490 kPa (5 kg/cm

, 71 psi) and keep distance more than 30 cm (11.81

in).

Blow air again into all the radiator core surfaces once per minute until no water sprays out.

JPBIA1961ZZ

Standard and limit

: Refer to

CO-32, "Radiator"

JPBIA0109ZZ

Revision: 2013 February

2012 MURANO

CO-16

< REMOVAL AND INSTALLATION >

RADIATOR

REMOVAL AND INSTALLATION

RADIATOR

Exploded View

INFOID:0000000007542458

Reservoir tank cap

Reservoir tank

Clamp

Reservoir tank hose

Radiator cap

Radiator cap adapter

Radiator pipe (upper)

Clamp

Radiator hose (upper)

10. Radiator hose (upper)

11.

O-ring

12. Drain plug

13. Water drain hose

14. Mounting rubber (upper)

15. Radiator upper clip

16. Radiator

17. Mounting rubber (lower)

18. Radiator pipe (lower)

19. Radiator hose (lower)

20. Clamp

21. CVT fluid cooler hose

22. CVT fluid cooler hose

23. CVT fluid cooler pipe

24. CVT fluid cooler hose

25. Grommet

26. Cooling fan assembly

27. Radiator hose (lower)

To water outlet

To transaxle assembly

To water inlet

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

JPBIA2760GB

Revision: 2013 February

2012 MURANO

RADIATOR

CO-17

< REMOVAL AND INSTALLATION >

Removal and Installation

INFOID:0000000007542459

REMOVAL

WARNING:

Never remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.
1.

Remove the following parts:
• Engine under cover.
• Radiator core support covers (RH and LH): Refer to

EM-31, "Exploded View"

• Air duct (inlet): Refer to

EM-31, "Exploded View"

• Front grille: Refer to

EXT-18, "Exploded View"

• Horn: Refer to

HRN-5, "Exploded View"

• Hood lock: Refer to

DLK-293, "Exploded View"

Drain engine coolant from radiator. Refer to

CO-11, "Draining"