Nissan Juke F15. Manual - part 556

P050A, P050B, P050E COLD START CONTROL

EC-1037

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

WITH GST

Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-1037, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012198537

1.

PERFORM IDLE AIR VOLUME LEARNING

Perform 

EC-758, "Description"

.

Is Idle Air Volume Learning carried out successfully?

YES

>> GO TO 2.

NO

>> Follow the instruction of Idle Air Volume Learning.

2.

CHECK INTAKE SYSTEM

Check for the cause of intake air volume lacking. Refer to the following.

• Crushed intake air passage

• Intake air passage clogging

• Clogging of throttle body
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning part

3.

CHECK FUEL INJECTION SYSTEM FUNCTION

Perform DTC Confirmation Procedure for DTC P0171. Refer to 

EC-905, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Proceed to 

EC-906, "Diagnosis Procedure"

 for DTC P0171.

4.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Erase DTC.

3. Perform DTC Confirmation Procedure.

See 

EC-1036, "DTC Logic"

.

Is the 1st trip DTC P050A, P050B or P050E displayed again?

YES

>> GO TO 5.

NO

>> INSPECTION END

5.

REPLACE ECM

Replace ECM. Refer to 

EC-1256, "Removal and Installation"

>> INSPECTION END

EC-1038

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P0520 EOP SENSOR

P0520 EOP SENSOR

DTC Logic

INFOID:0000000012198538

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 5 seconds.

2. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-1038, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012198539

1.

CHECK EOP SENSOR POWER SUPPLY-I

1. Turn ignition switch OFF.

2. Disconnect EOP sensor harness connector.

3. Turn ignition switch ON.

4. Check the voltage between EOP sensor harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK EOP SENSOR SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connectors.

3. Check the continuity between EOP sensor harness connector and ECM harness connector.

DTC No.

Trouble diagnosis

(Trouble diagnosis content)

Detecting condition

Possible cause

P0520

EOP SENSOR/SWITCH
[Engine oil pressure (EOP) sensor 
circuit]

ECM detects the following status con-
tinuously for 5 seconds or more:
• A voltage signal transmitted from 

the engine oil pressure sensor is 
lower than 0.3 V.

• A voltage signal transmitted from 

the engine oil pressure sensor is 
higher than 5.02 V.

• Harness or connectors

(EOP sensor circuit is open or short-
ed.)

• Engine oil level abnormality
• EOP sensor
• Sensor power supply 2 circuit

EOP sensor

Voltage

(Approx.)

Connector

+

−

terminal

F43

3

1

 5 V

P0520 EOP SENSOR

EC-1039

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 3.

NO 

>> Repair or replace error-detected parts.

3.

CHECK EOP SENSOR

Check EOP sensor. Refer to 

EC-1040, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

4.

CHECK EOP SENSOR POWER SUPPLY-II

Check the voltage between EOP sensor harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK EOP SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connectors.

3. Check the continuity between EOP sensor harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> Check sensor power supply 2 circuit. Refer to 

EC-1240, "Diagnosis Procedure"

.

NO 

>> Repair or replace error-detected parts.

6.

CHECK EOP SENSOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between EOP sensor harness connector and ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 7.

+

−

Continuity

EOP sensor

ECM

Connector

Terminal

Connector

Terminal

F43

2

F23

23

Existed

+

−

Voltage

(Approx.)

EOP sensor

Connector

Terminal

F43

3

Ground

5 V

+

−

Continuity

EOP sensor

ECM

Connector

Terminal

Connector

Terminal

F43

3

F23

29

Existed

+

−

Continuity

EOP sensor

ECM

Connector

Terminal

Connector

Terminal

F43

1

F23

13

Existed

EC-1040

< DTC/CIRCUIT DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

P0520 EOP SENSOR

NO 

>> Repair or replace error-detected parts.

7.

CHECK ECM GROUND CIRCUIT

Check the continuity between ECM harness connector and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO 

>> Repair or replace error-detected parts.

Component Inspection

INFOID:0000000012198540

1.

CHECK EOP SENSOR

1. Turn ignition switch OFF.

2. Disconnect EOP sensor harness connector.

3. Check resistance between EOP sensor connector terminals.

Is the inspection result normal? 

YES

>> INSPECTION END.

NO

>> Replace EOP sensor. Refer to 

EM-286, "Exploded View"

.

ECM

Ground

Continuity

Connector

Terminal

F23

9

Ground

Existed

10

50

F24

60

110

E19

147

149

152

EOP sensor

Condition

Resistance (k

Ω)

+

−

Terminal

1

2

None

4 k

Ω – 10 kΩ

3

2  k

Ω – 8 kΩ

2

1

4  k

Ω – 10 kΩ

3

1  k

Ω – 3 kΩ

3

1

2  k

Ω – 8 kΩ

2

1  k

Ω – 3 kΩ