Nissan Murano Z50 (2006 year). Manual - part 82

TROUBLE DIAGNOSIS

EC-91

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EC

Revision: 2006 August

2006 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-10

Fuel piping

5

5

5

5

5

5

EM-41

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-16

Air cleaner

EM-16

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

5

5

5

5

EM-16

Electric throttle control actuator

EM-18

Air leakage from intake manifold/
Collector/Gasket

EM-18

, 

EM-23

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-114

PNP switch

4

CVT-81

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-96

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-114

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

Valve 
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-60

Camshaft

EM-79

Intake valve timing control

EM-60

Intake valve

3

EM-96

Exhaust valve

EC-92

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 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-25

, 

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-29

, 

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-44

 or 

BL-236

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-93

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EC

Revision: 2006 August

2006 Murano

Engine Control Component Parts Location

NBS002ZI

PBIB3194E

EC-94

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

PBIB3195E

TROUBLE DIAGNOSIS

EC-95

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EC

Revision: 2006 August

2006 Murano

PBIB3196E

EC-96

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

PBIB2620E

TROUBLE DIAGNOSIS

EC-97

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E

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EC

Revision: 2006 August

2006 Murano

PBIB1686E

PBIB2290E

EC-98

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

PBIB3197E

TROUBLE DIAGNOSIS

EC-99

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EC

Revision: 2006 August

2006 Murano

Vacuum Hose Drawing

NBS002ZJ

Refer to 

EC-21, "System Diagram"

   for Vacuum Control System.

PBIB3192E

EC-100

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

Circuit Diagram

NBS002ZK

TBWB0792E

TROUBLE DIAGNOSIS

EC-101

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EC

Revision: 2006 August

2006 Murano

TBWB0793E

EC-102

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

ECM Harness Connector Terminal Layout

NBS002ZL

ECM Terminals and Reference Value

NBS002ZM

PREPARATION

1.

ECM is located behind the glove box. For this inspection,
remove glove box.

2.

Remove ECM harness connector.

3.

When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown at right.

4.

Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.

●

Use extreme care not to touch 2 pins at one time.

●

Data is for comparison and may not be exact.

ECM INSPECTION TABLE

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

MBIB0045E

PBIB1299E

PBIB1512E

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

1

B

ECM ground

[Engine is running]

●

Idle speed

Body ground

2

G/B

A/F sensor 1 heater
(bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

PBIB1584E

TROUBLE DIAGNOSIS

EC-103

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EC

Revision: 2006 August

2006 Murano

3

R

Throttle control motor relay 
power supply

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

4

G

Throttle control motor (Close)

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully released

0 - 14V

5

R

Throttle control motor (Open)

[Ignition switch: ON]

●

Engine stopped

●

Shift lever: D

●

Accelerator pedal: Fully depressed

0 - 14V

6

L/R

Heated oxygen sensor 2 
heater (bank 2)

[Engine is running]

●

Engine speed: Below 3,600 rpm after the 
following conditions are met

–

Engine: After warming up

–

Keeping the engine speed between 3,500 
and 4,000 rpm for 1 minute and at idle for 1 
minute under no load.

0 - 1.0V

[Ignition switch: ON]

●

Engine stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

8

BR/W

Electronic controlled engine 
mount-1

[Engine is running]

●

Engine speed: Above 950 rpm

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

For 2 seconds after engine speed is 950 
rpm or less.

0 - 1.0V

[Engine is running]

●

2 seconds after engine speed is 950 rpm or 
less.

2.0 - 3.0V

9

W/R

Electronic controlled engine 
mount-2

[Engine is running]

●

Engine speed: Below 950 rpm

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

For 2 seconds after engine speed is 950 
rpm or more.

0 - 1.0V

[Engine is running]

●

2 seconds after engine speed is 950 rpm or 
more.

2.0 - 3.0V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1104E

PBIB1105E

EC-104

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

10

Y

Intake valve timing control 
solenoid valve (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

7 - 12V

11

P

Intake valve timing control 
solenoid valve (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

7 - 12V

12

W

Power steering pressure sen-
sor

[Engine is running]

●

Steering wheel: Being turned

0.5 - 4.5V

[Engine is running]

●

Steering wheel: Not being turned

0.4 - 0.8V

13

W

Crankshaft position sensor 
(POS)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle.

Approximately 1.6V

[Engine is running]

●

Engine speed: 2,000 rpm

Approximately 1.4V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1790E

PBIB1790E

PBIB1041E

PBIB1042E

TROUBLE DIAGNOSIS

EC-105

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EC

Revision: 2006 August

2006 Murano

14

W

Camshaft position sensor 
(PHASE) (bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle.

1.0 - 4.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 4.0V

15

W

Knock sensor

[Engine is running]

●

Idle speed

Approximately 2.5V

16

LG/B

A/F sensor 1 (Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 3.1V

35

O/L

Approximately 2.6V

56

BR/Y

Approximately 2.3V

75

Y/R

Approximately 2.3V

21
22
23

L/W
R/Y
R/B

Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle.

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

●

Warm-up condition

●

Engine speed: 2,000 rpm

BATTERY VOLTAGE

(11 - 14V)

24

V

A/F sensor 1 heater
 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1039E

PBIB1040E

SEC984C

SEC985C

PBIB1584E

EC-106

TROUBLE DIAGNOSIS

Revision: 2006 August

2006 Murano

25

P/L

Heated oxygen sensor 2 
heater (bank 1)

[Engine is running]

●

Engine speed: Below 3,600 rpm after the 
following conditions are met

–

Engine: After warming up

–

Keeping the engine speed between 3,500 
and 4,000 rpm for 1 minute and at idle for 1 
minute under no load.

0 - 1.0V

[Ignition switch: ON]

●

Engine stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

29

G/Y

VIAS control solenoid valve

[Engine is running]

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

●

Engine speed: Between 1,800 and 3,600 
rpm

0 - 1.0V

32

BR

EVAP control system pres-
sure sensor

[Ignition switch: ON]

Approximately 1.8 - 4.8V

33

Y

Camshaft position sensor 
(PHASE) (bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm 
at idle.

1.0 - 4.0V

[Engine is running]

●

Engine speed: 2,000 rpm

1.0 - 4.0V

34

Y/G

Intake air temperature sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with intake 
air temperature.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

PBIB1039E

PBIB1040E