Nissan Frontier D22. Manual - part 389

TROUBLE DIAGNOSIS

EC-659

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Symptom Matrix Chart

UBS00DF5

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Reference 
page

HARD/

NO ST

AR

T

/REST

AR

T (

EXCP

. 

HA)

ENGI

NE ST

ALL

HESI

T

A

TION/

S

URGING/

FL

A

T

 SPOT

SP

ARK KNOCK/DET

O

NA

T

ION

L

A

CK O

F

 POW

E

R/

P

O

OR ACCEL

E

RA

TION

HI

GH I

D

L

E

/L

OW

 I

D

L

E

RO

UGH ID

L

E

/HUNTING

ID

LING VI

BRA

T

ION

SL

OW

/NO RETURN 

T

O

 I

D

L

E

OVERHEA

T

S/

W

A

TER TEMPERA

T

URE HI

GH

EXCESSIVE FUEL

 CONSUM

P

T

IO

N

EXCESSIVE OIL 

CONSUM

P

T

ION

BA

TTER

Y

 DEAD (

UNDER CHARGE)

Warranty symptom code

A
A

A
B

A
C

A
D

A
E

AF

A

G

AH

AJ

A
K

AL

A

M

H
A

Fuel 

Fuel pump circuit

1

1

2

3

2

3

2

3

1

EC-1149

Injector circuit

2

EC-1140

Fuel pressure regulator system

4

4

4

4

4

4

4

3

3

4

EC-617

Evaporative emission system

EC-1164

Air

Positive crankcase ventilation sys-
tem

1

EC-1182

Incorrect idle speed adjustment

3

3

1

1

1

1

1

EC-604

IACV-AAC valve circuit

2

1

3

3

3

2

2

2

2

3

1

EC-985

IACV-FICD solenoid valve circuit

2

3

3

EC-1158

Ignition

Incorrect ignition timing adjustment

3

3

1

1

1

1

1

1

EC-604

Ignition circuit

1

1

2

2 

2

2

2

2

EC-1134

EGR

EGRC-solenoid valve circuit

2

2

3

3

3

EC-1053

EGR system

2

1

2

3

3

 3

2

2

3

3

EC-875

, 

EC-

884

 , 

EC-

1058

Main power supply and ground circuit

1

2

3

3

3

3

2

1

3

1

EC-697

Air conditioner circuit

2

3

2

MTC-22

EC-660

[VG33E]

TROUBLE DIAGNOSIS

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

Camshaft position sensor circuit

1

1

2

2

2

2

2

2

EC-868

Mass air flow sensor circuit

3

EC-720

, 

EC-

727

Heated oxygen sensor 1 circuit

EC-768

, 

EC-

777

 , 

EC-790

 

, 

EC-1007

 , 

EC-1014

Engine coolant temperature sensor circuit

1

2

3

3

3

2

3

EC-738

, 

EC-

760

Throttle position sensor circuit

1

2

2

2

2

EC-743

, 

EC-

752

Incorrect throttle position sensor adjustment

3

1

1

1

1

1

1

1

EC-646

Vehicle speed sensor circuit

2

3

3

3

EC-980

Knock sensor circuit

3

EC-858

 

ECM

2

2

3

3

2

2

1

EC-1005

, 

EC-646

Start signal circuit

1

EC-1145

Park/neutral position (PNP) switch circuit

3

3

3

2

3

EC-1127

Power steering oil pressure switch circuit

 2

EC-1154

SYMPTOM

Reference 
page

HARD/NO ST

AR

T/REST

AR

T

 (

EXCP

. 

HA)

ENGINE ST

AL

L

HESIT

A

TI

ON/SURGI

N

G/FL

A

T SPOT

SP

ARK KNOCK/

DET

O

NA

TION

L

A

C

K

 OF POW

E

R/POOR ACC

E

L

E

RA

TI

ON

HIGH IDL

E

/L

OW

 IDL

E

ROUGH IDL

E

/HUNTING

IDLING

 VIBRA

T

IO

N

SL

O

W

/NO RETURN 

T

O

 IDL

E

OVERHEA

T

S/W

A

TER TEMPERA

T

UR

E

 HIGH

EXCESS

IVE FUEL CONSUM

P

T

ION

EXCESS

IVE OI

L

 CONSUM

P

T

IO

N

BA

TTER

Y

 DEAD (UNDER CHARGE)

Warranty symptom code

A
A

A
B

A
C

A
D

A
E

AF

A

G

AH

AJ

A
K

AL

A

M

H
A

TROUBLE DIAGNOSIS

EC-661

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

SYSTEM — ENGINE MECHANICAL & OTHER

SYMPTOM

Reference 
section

HARD/NO ST

AR

T/REST

AR

T (

EXCP

. HA)

ENGINE ST

ALL

HESIT

A

TIO

N

/SURGING

/FL

A

T

 SPOT

SP

ARK KNOCK/DET

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

EXCE

SSI

VE FUEL CONSUM

P

T

IO

N

EXCE

SSI

VE OIL 

CONSUM

P

T

ION

BA

TT

ER

Y DEAD (

UNDER CHARGE)

Warranty symptom code

A
A

A
B

A
C

A
D

A
E

AF

A

G

AH

AJ

A
K

AL

A

M

H
A

Fuel

Fuel tank

5

5

FL-3

Fuel piping

5

5

5

5

4

5

—

Vapor lock

Valve deposit

5

5

5

5

5

 

4

5

Poor fuel (Heavy weight gasoline, 
Low octane)

Air

Air duct

5

5

5

5

4

5

Air cleaner

Air leakage from air duct
(Mass air flow sensor — throttle 
body)

5

5

5

4

Throttle body, Throttle wire

EM-80

Air leakage from intake manifold/
Collector/Gasket

5

—

Cranking

Battery

1

1

1

1

1

1

1

1

SC-4

Generator circuit

SC-26

Starter circuit

SC-9

Park/neutral position (PNP) switch

MT-46

, 

AT-

249

Drive plate/Flywheel

6

EM-80

EC-662

[VG33E]

TROUBLE DIAGNOSIS

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

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-102

Cylinder head gasket

2

2

Cylinder block

6

6

6

6

6

6

6

6

3

EM-131

, 

EM-

91

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

Valve 
mecha-
nism

Timing chain

6

6

6

6

6

6

6

6

Camshaft

Intake valve

2

Exhaust valve

Hydraulic lash adjuster

Exhaust

Exhaust manifold/Tube/Muffler/Gas-
ket

6

6

 

6

6

6

6

6

6

EX-3

Three way catalyst

Lubrica-
tion

Oil pan/Oil strainer/Oil pump/Oil fil-
ter/Oil gallery

6

6

6

6

6

6

6

6

2

EM-88

, 

LU-

14

 , 

LU-16

Oil level (Low/Filthy) oil

MA-30

Cooling

Radiator/Hose/Radiator filler cap

6

6

6

6

6

6

6

2

6

CO-22

, 

CO-

25

 , 

CO-28

 , 

CO-32

 , 

CO-

30

Thermostat

5

5

Water pump

Water gallery

Cooling fan

5

5

Coolant level (low)/Contaminated 
coolant

MA-26

SYMPTOM

Reference 
section

HARD/NO ST

AR

T/REST

AR

T

 (

EXCP

. 

HA)

ENGINE ST

AL

L

HESIT

A

TI

ON/SURGI

N

G/FL

A

T SPOT

SP

ARK KNOCK/

DET

O

NA

TION

L

A

C

K

 OF POW

E

R/POOR ACC

E

L

E

RA

TI

ON

HIGH IDL

E

/L

OW

 IDL

E

ROUGH IDL

E

/HUNTING

IDLING

 VIBRA

T

IO

N

SL

O

W

/NO RETURN 

T

O

 IDL

E

OVERHEA

T

S/W

A

TER TEMPERA

T

UR

E

 HIGH

EXCESS

IVE FUEL CONSUM

P

T

ION

EXCESS

IVE OI

L

 CONSUM

P

T

IO

N

BA

TTER

Y

 DEAD (UNDER CHARGE)

Warranty symptom code

A
A

A
B

A
C

A
D

A
E

AF

A

G

AH

AJ

A
K

AL

A

M

H
A