Nissan X-Trail 32. Manual - part 795

P0524 ENGINE OIL PRESSURE

EC-309

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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EC

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YES

>> GO TO 3.

NO

>> Check oil pump. Refer to 

LU-16, "Exploded View"

.

3.

CHECK EOP SENSOR

Check EOP sensor. Refer to 

EC-306, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EOP sensor. Refer to 

LU-16, "Exploded View"

.

4.

CHECK ENGINE OIL LEAKAGE

Check engine oil leakage. Refer to 

LU-9, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning part.

5.

CHECK CAUSE OF ENGINE OIL CONSUMPTION

Check the following item.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000010775202

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?

Step

Inspection item

Equipment

Standard

Reference

1

PCV  valve

EC-429, "Inspection"

2

Exhaust front tube

Visual

• No blocking
• No abnormal sounds

—

3

Oil pump ASSY

Visual

• No blocking
• No abnormal sounds

—

4

• Piston
• Piston pin
• Piston ring

• Piston to piston pin oil clearance

EM-115, "Inspection"

• Piston ring side clearance

EM-115, "Inspection"

• Piston ring end gap

EM-115, "Inspection"

5

Cylinder block

• Cylinder block top surface distortion

EM-115, "Inspection"

• Piston to cylinder bore clearance

EM-115, "Inspection"

EOP sensor

Resistance

+

−

Terminal

1

2

4  -  10  k

Ω

3

2  -  8  k

Ω

2

1

4  -  10  k

Ω

3

1  -  3  k

Ω

3

1

2  -  8  k

Ω

2

1  -  3  k

Ω

EC-310

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0524 ENGINE OIL PRESSURE

YES

>> INSPECTION END

NO

>> Replace EOP sensor. Refer to 

EM-106, "Exploded View"

.

P0603, P062F ECM

EC-311

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

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P0603, P062F ECM

DTC Description

INFOID:0000000010775203

DTC DETECTION LOGIC

POSSIBLE CAUSE

DTC P0603

• Harness or connectors (ECM power supply circuit is open or shorted.)
• ECM

DTC P062F

ECM

FAIL-SAFE

P0603

P062F

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

Perform the following procedure before performing DTC Confirmation Procedure.
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 FOR DTC P062F

1.

Start engine and wait at least 10 seconds.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Repeat steps 1 and 2 for 4 times.

4.

Turn ignition switch ON.

5.

Erase DTC.

6.

Turn ignition switch OFF and wait at least 10 seconds.

7.

Start engine and wait for 10 seconds.

8.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-312, "Diagnosis Procedure"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0603

ECM BACK UP/CIRCUIT
[Internal Control Module Keep Alive Memo-
ry (KAM) Error]

ECM buck up system does not function properly.

P062F

CONTROL MODULE
(Internal control module EEPROM error)

EEPROM (built-in microcomputer) system internal ECM does not function 
properly.

Engine operating condition in fail-safe mode

Fail safe mode

Vehicle behavior

Traveling con-
trol mode

Accelerator an-
gle variation 
control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This 
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.

Engine output 
control

ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle 
speed to encourage the driver to repair malfunction.

EC-312

< DTC/CIRCUIT DIAGNOSIS >

[MR20DD]

P0603, P062F ECM

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0603

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON and wait at least 10 seconds.

3.

Turn ignition switch OFF and wait at least 5 minutes.

4.

Turn ignition switch ON and wait at least 10 seconds.

5.

Repeat steps 3 and 4 for 5 times.

6.

Turn ignition switch ON.

7.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Proceed to 

EC-312, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010775204

1.

INSPECTION START

Check that the battery negative terminal is not disconnected during ignition switch ON.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

ERASE DTC

1.

Start the engine and let it idle at least 10 seconds.

2.

Turn ignition switch OFF.

3.

Repeat steps 1 and 2 for 4 times.

4.

Erase DTC.

5.

Turn ignition switch OFF and wait at least 10 seconds.

6.

Start the engine and let it idle for 10 seconds.

7.

Check 1st trip DTC.

Is DTC P062F detected again?

YES

>> Replace ECM. Refer to 

EC-430, "Removal and Installation"

.

NO

>> INSPECTION END

3.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT

Check ECM power supply and ground circuit. Refer to 

EC-162, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC confirmation procedure. Refer to 

EC-311, "DTC Description"

.

Is the DTC P0603 or P062F detected again?

YES

>> Replace ECM. Refer to 

EC-430, "Removal and Installation"

.

NO

>> INSPECTION END