Nissan Sentra. Manual - part 444

EC-472

< DTC/CIRCUIT DIAGNOSIS >

[MRA8DE]

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace refueling EVAP vapor cut valve with fuel tank. Refer to 

FL-10, "Removal and Installation"

.

Filler tube

Recirculation line

EVAP/ORVR line

Vacuum/pressure handy pump

Fuel tank

JPBIA5852ZZ

ENGINE CONTROL SYSTEM

EC-473

< SYMPTOM DIAGNOSIS >

[MRA8DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM

Symptom Table

INFOID:0000000009758731

SYSTEM — BASIC ENGINE CONTROL SYSTEM

SYMPTOM

Reference 
page

HARD/NO ST

AR

T

/REST

AR

T

 (EXCP

. 

H

A

)

ENGINE ST

ALL

HESIT

A

TION/SURGING/FLA

T

 SPOT

SP

ARK KNOCK/DET

O

NA

TION

LACK

 OF POWER/

POOR 

ACC

E

LERA

TION

HIGH IDL

E/LOW

 IDLE

ROUG

H IDLE/HUNTING

IDLI

NG VIBRA

TION

SLOW

/NO RETURN T

O

 IDLE

OVERHEA

T

S/W

A

TER TEMPERA

T

UR

E

 HIGH

EXCESS

IVE F

U

E

L CONSUMP

T

IO

N

EXCESS

IVE OIL CONSUMP

T

ION

BA

TTER

Y

 DEAD (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-453

Fuel  pressure  regulator  system

3

3

4

4

4

4

4

4

4

4

EC-143

Fuel  injector  circuit

1

1

2

3

2

2

2

2

EC-450

Evaporative  emission  system

3

3

4

4

4

4

4

4

4

4

EC-49

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-30

Incorrect idle speed adjustment

1

1

1

1

1

EC-479

Electric  throttle  control  actuator

1

1

2

3

3

2

2

2

2

2

2

EC-425

, 

EC-428

, 

EC-430

Ignition Incorrect  ignition  timing  adjustment

3

3

1

1

1

1

1

1

EC-480

Ignition  circuit

1

1

2

2

2

2

2

2

EC-456

Main  power  supply  and  ground  circuit

2

2

3

3

3

3

3

2

3

EC-164

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-187

Engine coolant temperature sensor circuit

3

3

3

EC-198

Air fuel ratio (A/F) sensor 1 circuit

EC-210

, 

EC-214

, 

EC-217

Throttle position sensor circuit

2

2

EC-200

, 

EC-266

, 

EC-372

, 

EC-438

Accelerator pedal position sensor circuit

3

2

1

EC-432

, 

EC-435

, 

EC-441

Knock sensor circuit

2

3

EC-275

Crankshaft position sensor (POS) circuit

2

2

EC-277

Camshaft position sensor (PHASE) circuit

3

2

EC-280

EC-474

< SYMPTOM DIAGNOSIS >

[MRA8DE]

ENGINE CONTROL SYSTEM

Vehicle speed signal circuit

2

3

3

3

EC-330

 

(CVT mod-
els), 

EC-

331

 (M/T 

models)

ECM

2

2

3

3

3

3

3

3

3

3

3

EC-346

, 

EC-347

, 

EC-348

, 

EC-349

, 

EC-350

, 

EC-351

, 

EC-352

Intake valve timing control solenoid valve cir-
cuit

3

2

1

3

2

2

3

3

EC-180

Exhaust valve timing control solenoid valve 
circuit

3

2

1

3

2

2

3

3

EC-183

Exhaust valve timing control position sensor 
circuit

3

2

1

3

2

2

3

3

EC-359

PNP signal circuit

3

3

3

3

3

EC-355

Refrigerant pressure sensor circuit

2

3

3

4

EC-465

Battery current sensor circuit

4

5

5

3

EC-374

, 

EC-377

, 

EC-380

, 

EC-383

Starter relay circuit

3

EC-399

, 

EC-402

Starter control relay circuit

3

EC-399

, 

EC-402

Electrical load signal circuit

3

EC-461

Intake manifold runner control valve motor cir-
cuit

4

4

EC-413

Intake manifold runner control valve position 
sensor circuit

4

4

EC-416

Intake manifold tuning valve circuit

1

EC-408

SYMPTOM

Reference 
page

HARD/NO S

TA

R

T/RES

TA

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

LOW/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

ENGINE CONTROL SYSTEM

EC-475

< SYMPTOM DIAGNOSIS >

[MRA8DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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

SYSTEM — ENGINE MECHANICAL & OTHER

Air  conditioner  circuit

2

2

3

3

3

3

3

3

3

3

2

HAC-51

 

(Auto A/C ),  

HAC-156

 

(Manual air 
condition-
ing)

ABS actuator and electric unit (control unit)

4

BRC-51

SYMPTOM

Reference 
page

HARD/NO S

TA

R

T/RES

TA

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

LOW/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

SYMPTOM

Reference 
page

HARD/NO ST

AR

T

/REST

AR

T

 (EXCP

. HA

)

ENGINE ST

ALL

HESIT

A

TION/SURGING/FLA

T

 SPOT

SP

ARK KNOCK/DET

O

NA

T

ION

LACK 

OF POWER/PO

OR A

C

C

E

LERA

TION

HIGH IDL

E/LOW 

IDLE

ROU

G

H IDLE/HUNTING

IDLI

NG VIBRA

TION

SLOW/NO

 RETURN 

T

O

 IDLE

OVERHEA

T

S/W

A

TER TEMP

ERA

T

U

R

E

 HIGH

EXCESSI

VE FUE

L CONSUMP

T

IO

N

EXCESSI

VE OIL CONSUMP

T

ION

BA

TTER

Y

 DEAD (UNDER CHARGE)

Warranty symptom code

A
A

AB

AC

AD

AE

AF

AG AH

AJ

AK

AL

AM HA

Fuel

Fuel tank

5

5

FL-13

Fuel piping

5

5

5

5

5

5

FL-5

Vapor lock

—

Valve deposit

5

5

5

5

5

5

5

—

Poor fuel (Heavy weight gasoline, 
Low octane)

—