Nissan Murano Z50 (2004 year). Manual — part 73

TROUBLE DIAGNOSIS

EC-79

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3.

CHECK TARGET IDLE SPEED

With CONSULT-II

1.

Run engine at about 2,000 rpm for about 2 minutes under no-load.

2.

Rev engine (2,000 to 3,000 rpm) two or three times under no-
load, then run engine at idle speed for about 1 minute.

3.

Read idle speed in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

1.

Run engine at about 2,000 rpm for about 2 minutes under no-load.

2.

Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed for about
1 minute.

3.

Check idle speed.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 4.

4.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform

EC-43, "Accelerator Pedal Released Position Learning"

.

>> GO TO 5.

5.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-43, "Throttle Valve Closed Position Learning"

.

>> GO TO 6.

SEF978U

CVT:

650

±

50 rpm (in P or N position)

SEF058Y

CVT:

650

±

50 rpm (in P or N position)

EC-80

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

6.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-43, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 7.

No

>> 1. Follow the instruction of Idle Air Volume Learning.

2. GO TO 4.

7.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Read idle speed in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

●

Check camshaft position sensor (PHASE) and circuit. Refer to

EC-268

.

●

Check crankshaft position sensor (POS) and circuit. Refer to

EC-262

.

OK or NG

OK

>> GO TO 9.

NG

>> 1. Repair or replace.

2. GO TO 4.

9.

CHECK ECM FUNCTION

1.

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

2.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

EC-62, "NVIS (Nissan Vehicle Immobilizer System — NATS)"

.

>> GO TO 4.

CVT:

650

±

50 rpm (in P or N position)

CVT:

650

±

50 rpm (in P or N position)

TROUBLE DIAGNOSIS

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Revision: 2004 November

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10.

CHECK IGNITION TIMING

1.

Run engine at idle.

2.

Check ignition timing with a timing light.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform

EC-43, "Accelerator Pedal Released Position Learning"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-43, "Throttle Valve Closed Position Learning"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-43, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?
Yes or No

Yes

>> GO TO 14.

No

>> 1. Follow the instruction of Idle Air Volume Learning.

2. GO TO 4.

CVT:

15

±

5

°

BTDC (in P or N position)

PBIB1382E

EC-82

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

14.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Read idle speed in “DATA MONITOR” mode with CONSULT-II.

Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 17.

15.

CHECK IGNITION TIMING AGAIN

1.

Run engine at idle.

2.

Check ignition timing with a timing light.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 16.

16.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to

EM-58, "TIMING CHAIN"

.

OK or NG

OK

>> GO TO 17.

NG

>> 1. Repair the timing chain installation.

2. GO TO 4.

17.

DETECT MALFUNCTIONING PART

Check the following.

●

Check camshaft position sensor (PHASE) and circuit. Refer to

EC-268

.

●

Check crankshaft position sensor (POS) and circuit. Refer to

EC-262

.

OK or NG

OK

>> GO TO 18.

NG

>> 1. Repair or replace.

2. GO TO 4.

CVT:

650

±

50 rpm (in P or N position)

CVT:

650

±

50 rpm (in P or N position)

CVT:

15

±

5

°

BTDC (in P or N position)

PBIB1382E

TROUBLE DIAGNOSIS

EC-83

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Revision: 2004 November

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18.

CHECK ECM FUNCTION

1.

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

2.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

EC-62, "NVIS (Nissan Vehicle Immobilizer System — NATS)"

.

>> GO TO 4.

Symptom Matrix Chart

ABS004AW

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Refer-
ence page

HARD/NO ST

AR

T/REST

AR

T (

EXCP

. HA)

ENGINE ST

A

L

L

HESIT

A

TIO

N

/SURGIN

G/FL

A

T SPOT

SP

ARK KNOCK/D

E

T

O

NA

TION

L

A

CK

OF POW

E

R/

POOR ACCEL

E

RA

TIO

N

HIGH IDL

E

/L

OW

IDL

E

ROUGH I

D

L

E

/HUNTING

IDLING VIBRA

T

IO

N

SL

OW

/NO RETURN

T

O

IDL

E

OVERHEA

T

S/W

A

TER TEMPERA

T

URE

HIGH

EXCES

SI

VE FUEL CONSUM

P

T

IO

N

EXCES

SI

VE OIL

CONSUM

P

T

IO

N

BA

TTE

R

Y

DEAD (

UNDER CHARG

E

)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

Fuel

Fuel pump circuit

1

1

2

3

2

2

2

3

2

EC-622

Fuel pressure regulator system

3

3

4

4

4

4

4

4

4

4

EC-45

Injector circuit

1

1

2

3

2

2

2

2

EC-616

Evaporative emission system

3

3

4

4

4

4

4

4

4

4

EC-651

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-663

Incorrect idle speed adjustment

1

1

1

1

1

EC-32

Electric throttle control actuator

1

1

2

3

3

2

2

2

2

2

2

EC-384

,

EC-386

Ignition

Incorrect ignition timing adjustment

3

3

1

1

1

1

1

1

EC-32

Ignition circuit

1

1

2

2

2

2

2

2

EC-595

Main power supply and ground circuit

2

2

3

3

3

3

3

2

3

EC-131

EC-84

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

1 - 6: The numbers refer to the order of inspection.
(continued on next page)

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-155

,

EC-163

Engine coolant temperature sensor circuit

3

3

3

EC-175

,

EC-187

A/F sensor 1 circuit

EC-449

,

EC-457

,

EC-465

,

EC-474

,

EC-483

,

EC-492

,

EC-504

Throttle position sensor circuit

2

2

EC-180

,

EC-243

,

EC-440

,

EC-442

,

EC-444

,

EC-581

Accelerator pedal position sensor circuit

3

2

1

EC-568

,

EC-574

,

EC-588

Knock sensor circuit

2

3

EC-257

Crankshaft position sensor (POS) circuit

2

2

EC-262

Camshaft position sensor (PHASE) circuit

3

2

EC-268

Vehicle speed signal circuit

2

3

3

3

EC-350

Power steering pressure sensor circuit

2

3

3

EC-356

ECM

2

2

3

3

3

3

3

3

3

3

3

EC-361

,

EC-373

Intake valve timing control solenoid valve cir-
cuit

3

2

1

3

2

2

3

3

EC-377

PNP switch circuit

3

3

3

3

3

EC-549

VIAS control solenoid valve circuit

1

EC-558

Refrigerant pressure sensor circuit

2

3

3

4

EC-633

Electrical load signal circuit

3

EC-638

Air conditioner circuit

2

2

3

3

3

3

3

3

3

3

2

ATC-34

ABS actuator and electric unit (control unit)

4

BRC-55

or

BRC-9

SYMPTOM

Refer-
ence page

HARD/

NO ST

AR

T

/REST

AR

T (

EXCP

. H

A

)

ENGI

NE ST

ALL

HESI

T

A

TION/

S

URGING/

FL

A

T

SPOT

SP

ARK KNOCK/DET

O

NA

TI

ON

L

A

CK OF

POW

E

R/POO

R

ACCEL

E

RA

TION

HI

GH I

D

L

E

/L

OW

I

D

L

E

ROUG

H IDL

E

/HUNTING

ID

L

ING VI

BRA

T

ION

SL

OW

/N

O RETURN

T

O

I

D

L

E

OVERHEA

T

S/

W

A

TER TEMPERA

T

URE HI

GH

EXCESSIVE F

U

E

L

CONSUM

P

T

IO

N

EXCESSIVE OIL

CONSUM

P

T

ION

BA

TTER

Y

DEAD (

UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

TROUBLE DIAGNOSIS

EC-85

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Revision: 2004 November

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SYSTEM — ENGINE MECHANICAL & OTHER

SYMPTOM

Reference
page

HARD/

NO ST

AR

T/

REST

AR

T (

E

X

C

P

. HA)

ENGI

NE ST

ALL

HESIT

A

TION/SURG

ING/FL

A

T S

P

OT

SP

ARK K

N

O

C

K/DET

O

NA

TI

ON

L

A

CK

OF P

O

W

E

R/POOR ACCEL

E

R

A

TION

HI

GH ID

L

E

/L

OW

I

D

L

E

ROUGH IDL

E

/HUNTI

N

G

ID

L

ING VI

B

R

A

T

ION

SL

OW

/N

O RETURN

T

O

I

D

L

E

OVERHEA

T

S/W

A

T

E

R TEMPERA

T

URE

HI

GH

EXCESSIVE FUEL CO

NSUM

P

T

ION

EXCESSIVE O

IL CONSUM

P

T

IO

N

BA

TTER

Y

DEA

D

(UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

Fuel

Fuel tank

5

5

FL-9

Fuel piping

5

5

5

5

5

5

EM-40

Vapor lock

—

Valve deposit

5

5

5

5

5

5

5

—

Poor fuel (Heavy weight gaso-
line, Low octane)

—

Air

Air duct

5

5

5

5

5

5

EM-14

Air cleaner

EM-14

Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)

5

5

5

5

EM-14

Electric throttle control actuator

EM-16

Air leakage from intake manifold/
Collector/Gasket

EM-16

,

EM-21

Cranking

Battery

1

1

1

1

1

1

1

1

SC-4

Generator circuit

SC-17

Starter circuit

3

SC-9

Signal plate

6

EM-110

PNP switch

4

CVT-80

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-93

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-110

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

Valve
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-58

Camshaft

EM-77

Intake valve timing control

EM-58

Intake valve

3

EM-93

Exhaust valve

EC-86

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

1 - 6: The numbers refer to the order of inspection.

Exhaust

Exhaust manifold/Tube/Muffler/
Gasket

5

5

5

5

5

5

5

5

EM-23

,

EX-

3

Three way catalyst

Lubrica-
tion

Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery/Oil cooler

5

5

5

5

5

5

5

5

EM-28

,

LU-

12

,

LU-9

,

LU-10

Oil level (Low)/Filthy oil

LU-6

Cooling

Radiator/Hose/Radiator filler cap

5

5

5

5

5

5

5

4

5

CO-13

,

CO-16

Thermostat

5

CO-27

Water pump

CO-22

Water gallery

CO-29

Cooling fan

5

CO-21

Coolant level (Low)/Contami-
nated coolant

5

CO-9

NVIS (NISSAN Vehicle Immobilizer System —
NATS)

1

1

EC-62

or

BL-120

SYMPTOM

Reference
page

HARD/

NO ST

AR

T

/REST

AR

T (

EXCP

. H

A

)

ENGI

NE ST

ALL

HESI

T

A

TION/

S

URGING/

FL

A

T

SPOT

SP

ARK KNOCK/DET

O

NA

TI

ON

L

A

CK OF

POW

E

R/POO

R

ACCEL

E

RA

TION

HI

GH I

D

L

E

/L

OW

I

D

L

E

ROUG

H IDL

E

/HUNTING

ID

L

ING VI

BRA

T

ION

SL

OW

/N

O RETURN

T

O

I

D

L

E

OVERHEA

T

S/

W

A

TER TEMPERA

T

URE HI

GH

EXCESSIVE F

U

E

L

CONSUM

P

T

IO

N

EXCESSIVE OIL

CONSUM

P

T

ION

BA

TTER

Y

DEAD (

UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

TROUBLE DIAGNOSIS

EC-87

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Revision: 2004 November

2004 Murano

Engine Control Component Parts Location

ABS004AX

PBIB2088E

EC-88

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

PBIB2089E

TROUBLE DIAGNOSIS

EC-89

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EC

Revision: 2004 November

2004 Murano

PBIB2091E

EC-90

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

PBIB1292E

TROUBLE DIAGNOSIS

EC-91

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Revision: 2004 November

2004 Murano

PBIB1686E

PBIB2290E

EC-92

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

PBIB1294E

TROUBLE DIAGNOSIS

EC-93

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EC

Revision: 2004 November

2004 Murano

Circuit Diagram

ABS004AY

TBWA0679E

EC-94

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

TBWA0680E