Nissan Cube. Manual - part 314

EC-142

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0037, P0038 HO2S2 HEATER

YES

>> Go to 

EC-142, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009947258

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to 

GI-43, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK HO2S2 POWER SUPPLY CIRCUIT

1.

Disconnect heated oxygen sensor 2 (HO2S2) harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between HO2S2 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• IPDM E/R connector E15
• 15 A fuse (No. 61)
• Harness for open or short between heated oxygen sensor 2 and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between HO2S2 harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK HEATED OXYGEN SENSOR 2 HEATER

Refer to 

EC-143, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2. Refer to 

EX-5, "Exploded View"

.

CAUTION:

HO2S2

Ground

Voltage

Connector

Terminal

F30

2

Ground

Battery voltage

HO2S2

ECM

Continuity

Connector

Terminal

Connector

Terminal

F30

3

F7

5

Existed

P0037, P0038 HO2S2 HEATER

EC-143

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

• Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard

surface such as a concrete floor; use a new one.

• Before installing new sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner

[commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial
service tool).

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009947259

1.

CHECK HEATED OXYGEN SENSOR 2 HEATER

1.

Turn ignition switch OFF.

2.

Disconnect heated oxygen sensor 2 (HO2S2) harness connector.

3.

Check resistance between HO2S2 terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2. Refer to 

EX-5, "Exploded View"

.

CAUTION:

• Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard

surface such as a concrete floor; use a new one.

• Before installing new sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner

[commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial
service tool).

>> INSPECTION END

Terminals

Resistance

2 and 3

3.3 - 4.4 

Ω

 [at 25

°

C (77

°

F)]

1 and 2, 3, 4

∞

 

Ω

(Continuity should not exist)

4 and 1, 2, 3

EC-144

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0075 IVT CONTROL SOLENOID VALVE

P0075 IVT CONTROL SOLENOID VALVE

Description

INFOID:0000000009947260

Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.

DTC Logic

INFOID:0000000009947261

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

>> GO TO2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-144, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009947262

1.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect intake valve timing (IVT) control solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between intake valve timing control solenoid valve harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

PBIB1842E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0075

Intake valve timing control 
solenoid valve circuit

An improper voltage is sent to the ECM 
through intake valve timing control solenoid 
valve.

• Harness or connectors

(Intake valve timing control solenoid valve 
circuit is open or shorted.)

• Intake valve timing control solenoid valve

IVT control solenoid valve

Ground

Voltage

Connector

Terminal

F41

1

Ground

Battery voltage

P0075 IVT CONTROL SOLENOID VALVE

EC-145

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

C

D

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EC

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Check the following.
• Harness connectors E8, F1
• IPDM E/R connector E14
• Harness for open or short between IVT control solenoid valve and IPDM E/R

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN

AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between IVT control solenoid valve harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

4.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Refer to 

EC-145, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace intake valve timing control solenoid valve. Refer to 

EM-42, "Exploded View"

.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009947263

1.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I

1.

Turn ignition switch OFF.

2.

Disconnect intake valve timing control solenoid valve harness connector.

3.

Check resistance between intake valve timing control solenoid valve terminals as per the following.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace intake valve timing control solenoid valve. Refer to 

EM-42, "Exploded View"

.

2.

CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II

1.

Remove intake valve timing control solenoid valve. Refer to 

EM-42, "Exploded View"

.

IVT control solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F41

2

F8

73

Existed

Terminals

Resistance

1 and 2

6.7 - 7.7 

Ω

 [at 20

°

C (68

°

F)]

1 or 2 and ground

∞

 

Ω

(Continuity should not exist)