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Nissan Juke F15. Manual - part 370

P014C, P014D, P015A, P015B A/F SENSOR 1

EC-293

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

PERFORM DTC CONFIRMATION PROCEDURE-2

With CONSULT

1. Wait for about 20 seconds at idle.

2. Check the items status of “DATA MONITOR” as follows.

NOTE:

If “CMPLT” changed to “INCMP”, refer to

EC-264, "Component Function Check"

Is “CMPLT” displayed on CONSULT screen?

YES

>> GO TO 5.

>> Refer to

EC-264, "Component Function Check"

PERFORM SELF-DIAGNOSIS

With CONSULT

Check the “SELF-DIAG RESULT”.
Is any DTC detected?

YES

>> Proceed to

EC-294, "Diagnosis Procedure"

>> INSPECTION END

CHECK AIR-FUEL RATIO SELF-LEARNING VALUE

With GST

1. Start engine and warm it up to normal operating temperature.

2. Select Service $01 with GST.

3. Calculate the total value of “Short term fuel trim” and “Long term fuel trim” indications.
Is the total percentage within

±15%?

YES

>> GO TO 8.

>> GO TO 7.

DETECT MALFUNCTIONING PART

Check the following.

• Intake air leaks

• Exhaust gas leaks

• Incorrect fuel pressure

• Lack of fuel

• Fuel injector

• Incorrect PCV hose connection

• PCV valve

• Mass air flow sensor

>> Repair or replace malfunctioning part.

PERFORM 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.

4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

5. Let engine idle for 1 minute.

6. Increase the engine speed up to about 3,600 rpm and keep it for 10 seconds.

7. Fully release accelerator pedal and then let engine idle for about 1 minute.

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

YES

>> Proceed to

EC-294, "Diagnosis Procedure"

>> INSPECTION END

Data monitor item

Status

A/F SEN1 DIAG1 (B1)

CMPLT

A/F SEN1 DIAG2 (B1)

EC-294

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P014C, P014D, P015A, P015B A/F SENSOR 1

Diagnosis Procedure

INFOID:0000000012197845

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection M95. Refer to Ground Inspection in

GI-48, "Circuit Inspection"

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace ground connection.

RETIGHTEN A/F SENSOR 1

Loosen and retighten the A/F sensor 1. Refer to

EM-34, "2WD : Exploded View"

(FOR 2WD MODELS),

EM-

37, "AWD : Exploded View"

(FOR AWD MODELS).

>> GO TO 3.

CHECK EXHAUST GAS LEAK

1. Start engine and run it at idle.

2. Listen for an exhaust gas leak before three way catalyst 1.

Is exhaust gas leak detected?

YES

>> Repair or replace.

>> GO TO 4.

CHECK FOR INTAKE AIR LEAK

Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?

YES

>> Repair or replace.

>> GO TO 5.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

1. Clear the mixture ratio self-learning value. Refer to

EC-165, "Description"

2. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171or P0172 detected? Is it difficult to start engine?

YES

>> Perform trouble diagnosis for DTC P0171or P0172. Refer to

EC-297, "DTC Logic"

EC-301,

"DTC Logic"

>> GO TO 6.

CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect A/F sensor 1 harness connector.

2. Turn ignition switch ON.

3. Check the voltage between A/F sensor 1 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

PBIB1922E

A/F sensor 1

Ground

Voltage

Connector

Terminal

F70

Ground

Battery voltage

P014C, P014D, P015A, P015B A/F SENSOR 1

EC-295

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

>> GO TO 7.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E8, F1

• IPDM E/R harness connector E14

• 20 A fuse (No. 43)

• Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector and ground, or ECM harness connector

and ground.

5. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 9.

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

CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER

Refer to

EC-204, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 10.

>> GO TO 13.

10.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor.

Refer to

EC-235, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 11.

>> Replace malfunctioning mass air flow sensor. Refer to

EM-27, "Exploded View"

11.

CHECK PCV VALVE

Refer to

EM-60, "Exploded View"

Is the inspection result normal?

A/F sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F70

F25

Existed

A/F sensor 1

Ground

Continuity

Connector

Terminal

F70

Ground

Not existed

ECM

Ground

Continuity

Connector

Terminal

F25

Ground

Not existed

EC-296

< DTC/CIRCUIT DIAGNOSIS >

[MR FOR NISMO RS MODELS]

P014C, P014D, P015A, P015B A/F SENSOR 1

YES

>> GO TO 12.

>> Repair or replace PCV valve.

12.

CHECK INTERMITTENT INCIDENT

Perform

GI-45, "Intermittent Incident"

Is the inspection result normal?

YES

>> GO TO 13.

>> Repair or replace.

13.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace malfunctioning air fuel ratio (A/F) sensor 1. Refer to

EM-34, "2WD : Exploded View"

(FOR 2WD MOD-

ELS),

EM-37, "AWD : Exploded View"

(FOR AWD MODELS).

CAUTION:

• Discard any A/F 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 A/F sensor, clean exhaust system threads using Oxygen Sensor Thread

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

(commercial service tool).

>> INSPECTION END

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