Nissan Qashqai (2007-2010). Manual - part 430

 

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Nissan Qashqai (2007-2010). Manual - part 430

 

 

ENGINE CONTROL SYSTEM

EC-1239

< SYMPTOM DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM

Symptom Table

INFOID:0000000001094328

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

T

ION

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-926

Fuel  pressure  regulator  system

3

3

4

4

4

4

4

4

4

4

EC-978

Fuel  injector  circuit

1

1

2

3

2

2

2

2

EC-923

Evaporative  emission  system

3

3

4

4

4

4

4

4

4

4

EC-1036

Air

Positive crankcase ventilation sys-
tem

3

3

4

4

4

4

4

4

4

4

1

EC-935

Incorrect idle speed adjustment

1

1

1

1

1

EC-646

Electric  throttle  control  actuator

1

1

2

3

3

2

2

2

2

2

2

EC-832

EC-834

Ignition

Incorrect  ignition  timing  adjustment

3

3

1

1

1

1

1

1

EC-646

Ignition  circuit

1

1

2

2

2

2

2

2

EC-929

Main  power  supply  and  ground  circuit

2

2

3

3

3

3

3

2

3

EC-1069

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-746

Engine coolant temperature sensor circuit

3

3

3

EC-1084

Heated oxygen sensor 1 circuit

EC-760

EC-764

EC-770

EC-844

EC-849

Throttle position sensor circuit

2

2

EC-1087

EC-799

EC-874

EC-876

EC-906

Accelerator pedal position sensor circuit

3

2

1

EC-899

EC-902

EC-906

Knock sensor circuit

2

3

EC-807

Crankshaft position sensor (POS) circuit

2

2

EC-809

EC-1240

< SYMPTOM DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

ENGINE CONTROL SYSTEM

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

(continued on next page)

SYSTEM — ENGINE MECHANICAL & OTHER

Camshaft position sensor (PHASE) circuit

3

2

EC-813

Vehicle speed signal circuit

2

3

3

3

EC-825

ECM

2

2

3

3

3

3

3

3

3

3

3

EC-827

Intake valve timing control solenoid valve cir-
cuit

3

2

1

3

2

2

3

3

EC-829

PNP switch circuit

3

3

3

3

3

EC-892

Refrigerant pressure sensor circuit

2

3

3

4

EC-936

Electrical load signal circuit

3

EC-921

Air  conditioner  circuit

2

2

3

3

3

3

3

3

3

3

2

HA-12

ABS actuator and electric unit (control unit)

4

BRC-9

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

X

CESSIVE

 FUEL CON

S

UMP

T

ION

E

X

CESSIVE

 OIL 

C

O

NSUMP

T

ION

B

A

TTER

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

ENGINE CONTROL SYSTEM

EC-1241

< SYMPTOM DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

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

N

TING

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

A
A

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

Fuel

Fuel tank

5

5

FL-15

FL-

17

Fuel piping

5

5

5

5

5

5

EM-155

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-146

Air cleaner

EM-144

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

5

5

5

5

EM-146

Electric throttle control actuator

Air leakage from intake manifold/
Collector/Gasket

Cranking

Battery

1

1

1

1

1

1

1

1

PG-118

Generator circuit

CHG-8

Starter circuit

3

STR-8

Signal plate

6

EM-195

EM-199

PNP switch

4

TM-226

 or 

TM-324

Engine

Cylinder head

5

5

5

5

5

5

5

5

EM-186

Cylinder head gasket

4

3

Cylinder block

6

6

6

6

6

6

6

6

4

EM-187

Piston

Piston ring

Connecting rod

Bearing

Crankshaft

EC-1242

< SYMPTOM DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

ENGINE CONTROL SYSTEM

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

Valve 
mecha-
nism

Timing chain

5

5

5

5

5

5

5

5

EM-163

Camshaft

EM-163

Intake valve timing control

EM-163

Intake valve

3

EM-163

Exhaust valve

Exhaust

Exhaust manifold/Tube/Muffler/
Gasket

5

5

5

5

5

5

5

5

EM-149

EX-10

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-152

LU-18

LU-

17

Oil level (Low)/Filthy oil

LU-14

Cooling

Radiator/Hose/Radiator filler cap

5

5

5

5

5

5

5

4

5

CO-35

Thermostat

5

CO-41

Water pump

CO-39

Water gallery

CO-24

CO-25

Cooling fan

5

CO-37

Coolant level (Low)/Contaminat-
ed coolant

CO-30

NVIS (NISSAN Vehicle Immobilizer System — 
NATS)

1

1

SEC-14

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

X

CESSIVE

 FUEL CON

S

UMP

T

ION

E

X

CESSIVE

 OIL 

C

O

NSUMP

T

ION

B

A

TTER

DEAD (UNDER CHARGE)

Warranty symptom code

A
A

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

 

 

 

 

 

 

 

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