Infiniti FX35 / FX45. Manual — part 478

TROUBLE DIAGNOSIS

EC-673

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Symptom Matrix Chart

INFOID:0000000001326526

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Reference
page

HARD/NO ST

AR

T/REST

AR

T (EX

C

P

. HA)

ENGINE ST

ALL

HESI

T

A

TI

ON/

S

URGI

N

G/

FLA

T SPOT

SP

ARK KNOCK/

DET

O

NA

TION

LACK OF P

O

WER/POOR ACCELE

RA

TION

HIGH I

D

L

E/L

OW IDL

E

ROUGH IDLE

/HUNTING

IDL

ING VIB

R

A

T

IO

N

SLOW/NO RETURN T

O

IDLE

OVERHEA

T

S/W

A

TER TEMPERA

T

URE HIGH

EX

C

E

SSIVE FUEL CONSUMP

T

ION

EX

C

E

SSIVE OI

L

CONSUMP

T

ION

BA

TTER

Y DE

AD (UNDER CHARGE)

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-1155

Fuel pressure regulator system

3

3

4

4

4

4

4

4

4

4

EC-665

Fuel injector circuit

1

1

2

3

2

2

2

2

EM-190

Evaporative emission system

3

3

4

4

4

4

4

4

4

4

EC-618

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-629

Incorrect idle speed adjustment

1

1

1

1

1

EC-658

Electric throttle control actuator

1

1

2

3

3

2

2

2

2

2

2

EC-1092

,

EC-1102

Ignition

Incorrect ignition timing adjustment

3

3

1

1

1

1

1

1

EC-658

Ignition circuit

1

1

2

2

2

2

2

2

EC-1166

Main power supply and ground circuit

2

2

3

3

3

3

3

2

3

EC-718

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-761

,

EC-768

,

Engine coolant temperature sensor circuit

3

3

3

EC-779

,

EC-790

A/F sensor 1 circuit

EC-798

,

EC-806

,

EC-814

,

EC-822

,

EC-1129

Throttle position sensor circuit

2

2

EC-784

,

EC-889

,

EC-1041

,

EC-1043

,

EC-1116

Accelerator pedal position sensor circuit

3

2

1

EC-1009

,

EC-1104

,

EC-1110

,

EC-1122

Knock sensor circuit

2

3

EC-902

Crankshaft position sensor (POS) circuit

2

2

EC-906

Camshaft position sensor (PHASE) circuit

3

2

EC-911

EC-674

< SERVICE INFORMATION >

[VK45DE]

TROUBLE DIAGNOSIS

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

(continued on next page)

SYSTEM — ENGINE MECHANICAL & OTHER

Vehicle speed signal circuit

2

3

3

3

EC-992

Power steering pressure sensor circuit

2

3

3

EC-998

ECM

2

2

3

3

3

3

3

3

3

3

3

EC-1003

,

EC-1007

Intake valve timing control solenoid valve cir-
cuit

3

2

1

3

2

2

3

3

EC-754

PNP switch circuit

3

3

3

3

3

EC-1014

Refrigerant pressure sensor circuit

2

3

3

4

EC-1177

Electrical load signal circuit

3

EC-1147

Air conditioner circuit

2

2

3

3

3

3

3

3

3

3

2

ATC-32

VIAS control solenoid valve circuit

1

EC-1080

ABS actuator and electric unit (control unit)

4

EC-1028

SYMPTOM

Reference
page

HARD/NO S

T

A

R

T/RES

T

A

R

T (E

XCP

. HA)

E

N

GINE

ST

ALL

HES

IT

A

TION/SURGING/FLA

T

SPOT

S

P

ARK KNOC

K

/DET

O

NA

TI

ON

LACK OF

POWER/POOR ACCELERA

TION

HIG

H

IDL

E

/L

OW

ID

LE

ROUGH IDLE/HUNTING

ID

LING VI

BRA

T

ION

S

L

OW/NO RETU

RN

T

O ID

LE

OVERHEA

T

S

/W

A

TER TEMPERA

T

URE HIG

H

E

XCESSIVE

FUEL CON

S

UMP

T

ION

E

XCESSIVE

OIL

C

O

NSUMP

T

ION

B

A

TTER

Y

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

TROUBLE DIAGNOSIS

EC-675

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

SYMPTOM

Reference
page

HARD/NO ST

AR

T/REST

AR

T (EXCP

.

HA)

E

N

GI

N

E

ST

AL

L

HESIT

A

TION/S

U

R

GING/F

LA

T SP

OT

SP

ARK KNOCK/DE

T

O

NA

TION

LACK OF POWE

R/POOR

ACCELERA

TIO

N

HIGH IDL

E

/L

OW

IDL

E

ROUG

H IDLE/HU

NTING

IDL

ING VIBRA

T

ION

SLO

W

/NO RETURN T

O

IDLE

OVERHEA

T

S/W

A

TE

R

TEMPERA

T

URE

HIGH

EXCES

SIVE F

U

EL CONSUMP

T

ION

EXCES

SIVE OI

L CONSUMP

T

IO

N

BA

TTE

R

Y

DEAD (UN

D

E

R

CH

A

R

GE)

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-190

Vapor lock

—

Valve deposit

5

5

5

5

5

5

5

—

Poor fuel (Heavy weight gasoline,
Low octane)

—

Air

Air duct

5

5

5

5

5

5

EM-173

Air cleaner

EM-173

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

5

5

5

5

EM-173

Electric throttle control actuator

EM-175

Air leakage from intake manifold/
Collector/Gasket

EM-175

Cranking

Battery

1

1

1

1

1

1

1

1

SC-4

Generator circuit

SC-19

Starter circuit

3

SC-8

Signal plate

6

EM-241

PNP switch

4

AT-102

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-226

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-241

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

Valve
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-199

Camshaft

EM-211

Intake valve timing control

EM-199

Intake valve

3

EM-199

Exhaust valve

EC-676

< SERVICE INFORMATION >

[VK45DE]

TROUBLE DIAGNOSIS

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-179

,

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-183

,

LU-29

,

LU-

26

,

LU-27

Oil level (Low)/Filthy oil

LU-23

Cooling

Radiator/Hose/Radiator filler cap

5

5

5

5

5

5

5

4

5

CO-40

,

CO-44

Thermostat

5

CO-52

Water pump

CO-50

Water gallery

CO-36

Cooling fan

5

CO-48

Coolant level (Low)/Contaminat-
ed coolant

CO-37

IVIS (INFINITI Vehicle Immobilizer System —
NATS)

1

1

EC-631

or

BL-185

SYMPTOM

Reference
page

HARD/NO S

T

A

R

T/RES

T

A

R

T (E

XCP

. HA)

E

N

GINE

ST

ALL

HES

IT

A

TION/SURGING/FLA

T

SPOT

S

P

ARK KNOC

K

/DET

O

NA

TI

ON

LACK OF

POWER/POOR ACCELERA

TION

HIG

H

IDL

E

/L

OW

ID

LE

ROUGH IDLE/HUNTING

ID

LING VI

BRA

T

ION

S

L

OW/NO RETU

RN

T

O ID

LE

OVERHEA

T

S

/W

A

TER TEMPERA

T

URE HIG

H

E

XCESSIVE

FUEL CON

S

UMP

T

ION

E

XCESSIVE

OIL

C

O

NSUMP

T

ION

B

A

TTER

Y

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA