Nissan Qashqai (2007-2010). Manual - part 361

ECM

EC-963

< ECU DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

• Sea level
• Flat road
• Ambient air temperature: 20 - 30

°

C (68 - 86

°

F)

• Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30

°

C (68 - 86

°

F)], diagno-

sis may also be performed.

Pattern 1:
• The engine is started at the engine coolant temperature of 

−

10 to 35

°

C (14 to 95

°

F)

(where the voltage between the ECM terminal 46 and ground is 3.0 - 4.3V).

• The engine must be operated at idle speed until the engine coolant temperature is greater than 70

°

C

(158

°

F) (where the voltage between the ECM terminal 46 and ground is lower than 1.4V).

• The engine is started at the fuel tank temperature of warmer than 0

°

C (32

°

F) (where the voltage

between the ECM terminal 95 and ground is less than 4.1V).

Pattern 2:
• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended.

Test Value and Test Limit

INFOID:0000000000936977

The following is the information specified in Service $06 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.

SRT item

Self-diagnostic test item

DTC

Test value

(GST display)

Test limit

TID

CID

CATALYST

Three way catalyst function

P0420

01H

01H

Max.

P0420

02H

81H

Min.

HO2S

Heated oxygen sensor 1

P0133

09H

04H

Max.

P1143

0AH

84H

Min.

P1144

0BH

04H

Max.

P0132

0CH

04H

Max.

P0134

0DH

04H

Max.

Heated oxygen sensor 2

P0139

19H

86H

Min.

P1147

1AH

86H

Min.

P1146

1BH

06H

Max.

P0138

1CH

06H

Max.

HO2S HTR

Heated oxygen sensor 1 heater

P0135

29H

08H

Max.

2AH

88H

Min.

Heated oxygen sensor 2 heater

P0141

2DH

0AH

Max.

2EH

8AH

Min.

EC-964

< SYMPTOM DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ENGINE CONTROL SYSTEM

SYMPTOM DIAGNOSIS

ENGINE CONTROL SYSTEM

Symptom Table

INFOID:0000000000936978

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-692

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-736

Mass air flow sensor circuit

1

1

2

2

2

2

2

2

EC-746

Engine coolant temperature sensor circuit

3

3

3

EC-754

Heated oxygen sensor 1 circuit

EC-760

, 

EC-764

, 

EC-770

, 

EC-844

, 

EC-849

Throttle position sensor circuit

2

2

EC-757

, 

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

ENGINE CONTROL SYSTEM

EC-965

< SYMPTOM DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

C

D

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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

Y 

DEAD (UNDER CHARGE)

Warranty symptom code

AA

AB

AC

AD

AE

AF

AG

AH

AJ

AK

AL

AM

HA

EC-966

< SYMPTOM DIAGNOSIS >

[MR20DE (WITH EURO-OBD)]

ENGINE CONTROL SYSTEM

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