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

TROUBLE DIAGNOSIS

EC-79

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

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

EC-81

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

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

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

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

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

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

C

D

E

F

G

H

I

J

K

L

M

A

EC

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

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

PBIB2091E

EC-90

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

PBIB1292E

TROUBLE DIAGNOSIS

EC-91

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

PBIB1686E

PBIB2290E

EC-92

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

PBIB1294E

TROUBLE DIAGNOSIS

EC-93

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2004 November

2004 Murano

Circuit Diagram

ABS004AY

TBWA0679E

EC-94

TROUBLE DIAGNOSIS

Revision: 2004 November

2004 Murano

TBWA0680E