Murano Cross Cabriolet Z51 (2012 year). Manual — part 25

CHG

S TERMINAL CIRCUIT

CHG-25

< DTC/CIRCUIT DIAGNOSIS >

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S TERMINAL CIRCUIT

Description

INFOID:0000000007565945

The output voltage of the alternator is controlled by the IC voltage regulator at the “S” terminal detecting the
input voltage.
The “S” terminal circuit detects the battery voltage to adjust the alternator output voltage with the IC voltage
regulator.

Diagnosis Procedure

INFOID:0000000007565946

1.

CHECK “S” TERMINAL CONNECTION

1.

Turn ignition switch OFF.

2.

Check if “S” terminal is clean and tight.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair “S” terminal connection. Confirm repair by performing complete Charging system test

using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for
proper testing procedures.

2.

CHECK “S” TERMINAL CIRCUIT

Check voltage between alternator harness connector and ground.

Is the inspection result normal?

YES

>> Refer to

CHG-11, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

or

CHG-15, "Work Flow (With-

out EXP-800 NI or GR8-1200 NI)"

.

NO

>> Check harness for open between alternator and fuse.

Terminals

Voltage (Approx.)

(+)

(–)

Alternator harness connector

Terminal

F60

4

Ground

Battery voltage

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CHG-26

< SYMPTOM DIAGNOSIS >

CHARGING SYSTEM

SYMPTOM DIAGNOSIS

CHARGING SYSTEM

Symptom Table

INFOID:0000000007565947

Symptom

Reference

Discharged battery

Refer to

CHG-11, "Work Flow (With EXP-800 NI or GR8-1200 NI)"

or

CHG-15, "Work Flow (Without EXP-800 NI or GR8-1200 NI)"

.

The charge warning lamp does not illuminate when the ignition
switch is set to ON.

The charge warning lamp does not turn OFF after the engine
starts.

The charge warning lamp turns ON when increasing the engine
speed.

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CHG

ALTERNATOR

CHG-27

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

ALTERNATOR

Exploded View

INFOID:0000000007565948

REMOVAL

DISASSEMBLY

1.

Alternator mounting bolt (lower)

2.

Alternator bracket

3.

Alternator bracket mounting bolt

4.

Alternator connector

5.

Alternator

6.

Alternator mounting nut (lower)

7.

“B” terminal nut

8.

Alternator mounting bolt (upper)

: Vehicle front

: N·m (kg-m, ft-lb)

JMMIA0590GB

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CHG-28

< REMOVAL AND INSTALLATION >

ALTERNATOR

Type: A003TJ1791

Removal and Installation

INFOID:0000000007565949

REMOVAL

1.

Disconnect the negative battery terminal. Refer to

PG-108, "Removal and Installation"

.

2.

Remove engine cover.

3.

Remove front wheel and tire RH.

4.

Remove splash guard RH. Refer to

EXT-26, "FENDER PROTECTOR : Exploded View"

.

5.

Remove air cleaner and air duct assembly. Refer to

EM-26, "Removal and Installation"

.

6.

Remove drive belt. Refer to

EM-14, "Removal and Installation"

.

7.

Remove A/C compressor. Refer to

HA-30, "COMPRESSOR : Removal and Installation"

.

8.

Remove idler pulley.

9.

Disconnect the oil pressure switch.

10. Disconnect the alternator connectors.

11. Remove the alternator bolt and nuts, using power tools.

12. Slide the alternator out and remove.

INSTALLATION

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

CAUTION:

JMMIA0851GB

1.

Rear bearing

2.

Rotor assembly

3.

Retainer

4.

Front bearing

5.

Front bracket assembly

6.

Through bolt

7.

Pulley

8.

Pulley nut

9.

Stator assembly

10. IC voltage regulator assembly

11.

Diode assembly

12. Rear bracket assembly

13. Terminal set

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

: N·m (kg-m, ft-lb)

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CHG

ALTERNATOR

CHG-29

< REMOVAL AND INSTALLATION >

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• Temporarily tighten all of alternator bolt and nuts. And then

tighten them in numerical order shown in the figure.

• Be careful to tighten “B” terminal nut carefully.
• Install alternator and check tension of belt. Refer to

EM-14, "Checking"

.

• For this model, the power generation voltage variable control system that controls the power gener-

ation voltage of the alternator has been adopted. Therefore, the power generation voltage variable
control system operation inspection should be performed after replacing the alternator, and then
make sure that the system operates normally. Refer to

CHG-19, "Inspection Procedure"

.

Inspection

INFOID:0000000007565950

ALTERNATOR PULLEY INSPECTION

Perform the following.
• Make sure that alternator pulley does not rattle.
• Make sure that alternator pulley nut is tight.

JPMIA0831ZZ

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CHG-30

< SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Alternator

INFOID:0000000007565951

*: Adjustment range of power generation voltage variable control is 11.4 – 15.6 V.

Type

A003TJ1791

MITSUBISHI make

Nominal rating

[V - A]

12 – 130

Ground polarity

Negative

Minimum revolution under no-load (When 13.5 V is ap-
plied)

[rpm]

Less than 1,300

Hot output current (When 13.5 V is applied)

[A/rpm]

More than 61/1,500

More than 109/2,500
More than 129/5,000

Regulated output voltage

[V]

14.1 – 14.7

*

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CO-1

ENGINE

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SECTION

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CONTENTS

ENGINE COOLING SYSTEM

PRECAUTION . . . . . . . . . . . ...

2

PRECAUTIONS . . . . . . . . . . . . ...

2

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . . ...

2

Liquid Gasket . . . . . . . . . . . . . . ...

2

PREPARATION . . . . . . . . . . .

4

PREPARATION . . . . . . . . . . . . ...

4

Special Service Tool . . . . . . . . . . . .....

4

Commercial Service Tools . . . . . . . . . ...

4

SYSTEM DESCRIPTION . . . . . . . ..

5

DESCRIPTION . . . . . . . . . . . . .

5

Engine Cooling System . . . . . . . . . . ...

5

Engine Cooling System Schematic . . . . . .....

5

SYMPTOM DIAGNOSIS . . . . . . . ...

6

OVERHEATING CAUSE ANALYSIS . . . . ..

6

Troubleshooting Chart . . . . . . . . . . . ..

6

PERIODIC MAINTENANCE . . . . . . ..

8

ENGINE COOLANT . . . . . . . . . . .

8

Inspection . . . . . . . . . . . . . . . . ..

8

Draining . . . . . . . . . . . . . . . . .....

8

Refilling . . . . . . . . . . . . . . . . .....

9

Flushing . . . . . . . . . . . . . . . . ...

10

RADIATOR . . . . . . . . . . . . . . .

12

RADIATOR CAP . . . . . . . . . . . . . .

12

RADIATOR CAP : Inspection . . . . . . . . ..

12

RADIATOR . . . . . . . . . . . . . . . .

12

RADIATOR : Inspection . . . . . . . . . . ..

12

REMOVAL AND INSTALLATION . . . ...

13

RADIATOR . . . . . . . . . . . . . .

13

Exploded View . . . . . . . . . . . . . . .

13

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

14

Inspection . . . . . . . . . . . . . . . .

17

COOLING FAN . . . . . . . . . . . . ..

18

Exploded View . . . . . . . . . . . . . . .

18

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

18

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

19

Inspection . . . . . . . . . . . . . . . .

19

WATER PUMP . . . . . . . . . . . . ..

20

Exploded View . . . . . . . . . . . . . . .

20

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

20

Inspection . . . . . . . . . . . . . . . .

24

WATER INLET AND THERMOSTAT ASSEM-
BLY . . . . . . . . . . . . . . . . .

25

Exploded View . . . . . . . . . . . . . . .

25

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

25

Inspection . . . . . . . . . . . . . . . .

26

WATER OUTLET AND WATER PIPING . . ..

27

Exploded View . . . . . . . . . . . . . . .

27

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

27

Inspection . . . . . . . . . . . . . . . .

28

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

29

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

29

Periodical Maintenance Specification . . . . . ..

29

Radiator . . . . . . . . . . . . . . . . ...

29

Thermostat . . . . . . . . . . . . . . . ..

29

Revision: 2013 February

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CO-2

< PRECAUTION >

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000007565973

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.

Liquid Gasket

INFOID:0000000007565974

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

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PRECAUTIONS

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< PRECAUTION >

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1.

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.

2.

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.

3.

Attach liquid gasket tube to the tube presser (commercial ser-
vice tool).
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

4.

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.

JPBIA0053ZZ

EMA0622D

A

: Groove

: Inside

JPBIA0010ZZ

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CO-4

< PREPARATION >

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000007565975

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

Commercial Service Tools

INFOID:0000000007565976

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

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DESCRIPTION

CO-5

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

DESCRIPTION

Engine Cooling System

INFOID:0000000007565977

Engine Cooling System Schematic

INFOID:0000000007565978

JPBIA5297GB

JPBIA5298GB

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CO-6

< SYMPTOM DIAGNOSIS >

OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000007565979

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

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OVERHEATING CAUSE ANALYSIS

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< SYMPTOM DIAGNOSIS >

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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

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CO-8

< PERIODIC MAINTENANCE >

ENGINE COOLANT

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

INFOID:0000000007565980

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-10, "Fluids and Lubricants"

.

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
engine cooling system.

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:0000000007565981

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.

1.

Remove engine under cover.

2.

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-75, "Setting"

.

3.

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

A

: MAX

B

: MIN

JPBIA0102ZZ

Testing pressure

: Refer to

CO-29, "Radiator"

.

PBIC5121J

: Vehicle front

JPBIA1684ZZ

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ENGINE COOLANT

CO-9

< PERIODIC MAINTENANCE >

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4.

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

CO-10, "Flushing"

.

Refilling

INFOID:0000000007565982

CAUTION:

• Do not reuse O-rings.
• Do not put additive such as waterleak preventive, sine 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-10, "Fluids and Lubricants"

.

1.

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-107, "Dis-

assembly and Assembly"

.

2.

Check that each hose clamp has been firmly tightened.

3.

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

EM-26, "Exploded

View"

.

4.

Disconnect heater hose (1) at the position (

) in the figure.

5.

Fill radiator 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.

6.

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

Tightening torque

: Refer to

CO-13, "Exploded View"

.

: Vehicle front

JPBIA1685ZZ

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

: Refer to

CO-29, "Periodical Maintenance Specifica-

tion"

.

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

: Refer to

CO-29, "Periodical Maintenance Specification"

.

A

: MAX

B

: MIN

JPBIA0412ZZ

JPBIA0102ZZ

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CO-10

< PERIODIC MAINTENANCE >

ENGINE COOLANT

7.

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

EM-26, "Exploded

View"

.

8.

Install radiator cap.

9.

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.

10. 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.)

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

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

longer drops.

13. Check cooling system for leakage with engine running.

14. 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.

15. Repeat step 13 three times.

16. 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:0000000007565983

1.

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-107, "Dis-

assembly and Assembly"

.

2.

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

EM-26, "Exploded

View"

.

3.

Disconnect heater hose (1) at the position (

) in the figure.

4.

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.

5.

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

6.

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

7.

Stop the engine and wait until it cools down.

Tightening torque

: Refer to

CO-13, "Exploded View"

.

: Vehicle front

JPBIA1685ZZ

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