Nissan Pathfinder (2009 year). Manual - part 327

EC-630

< COMPONENT DIAGNOSIS >

[VK56DE]

P0132, P0152 A/F SENSOR 1

6.

Turn ignition switch OFF and wait at least 10 seconds.

7.

Restart engine.

8.

Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine.

9.

Maintain the following conditions for approximately 20 consecutive seconds.

NOTE:
• Keep the accelerator pedal as steady as possible during cruising.
• If this procedure is not completed within 1 minute after restarting engine at step 7, return to step

4.

10. Check 1st trip DTC.
11. If 1st trip DTC is displayed, go to 

EC-630, "Diagnosis Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-III” above.

Diagnosis Procedure

INFOID:0000000003936564

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten ground screws on the body.
Refer to 

EC-568, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK AIR FUEL RATIO SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect air fuel ratio (A/F) sensor 1 harness connector.

2.

Turn ignition switch ON.

ENG SPEED

1,000 - 3,200 rpm

VHCL SPEED SE

More than 40 km/h (25 MPH)

B/FUEL SCHDL

1.5 - 9.0 msec

Gear position

Suitable position

BBIA0539E

1.

A/F sensor 1 (bank 2) harness connector

2.

A/F sensor 1 (bank 2)

3.

A/F sensor 1 (bank 1)

4.

A/F sensor 1 (bank 1) harness connector

: Vehicle front

ALBIA0360ZZ

2009 Pathfinder

P0132, P0152 A/F SENSOR 1

EC-631

< COMPONENT DIAGNOSIS >

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3.

Check voltage between A/F sensor 1 terminal 4 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E2, F32
• IPDM E/R harness connector E119
• 15 A fuse (No. 54)
• Harness for open or short between A/F sensor 1 and IPDM E/R

>> Repair or replace harness or connectors.

4.

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

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between A/F sensor 1 terminals and ECM terminals as per the following.
Refer to Wiring Diagram.

4.

Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.

5.

Also check harness for short to power.

OK or NG

OK

>> GO TO 5.

NG

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

5.

CHECK INTERMITTENT INCIDENT

Perform 

GI-49, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace malfunctioning part.

Voltage: Battery voltage

PBIB3308E

A/F sensor 1 terminal

ECM terminal

Bank1

1

35

2

56

Bank 2

1

16

2

75

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

1

35

1

16

2

56

2

75

Continuity should not exist.

2009 Pathfinder

EC-632

< COMPONENT DIAGNOSIS >

[VK56DE]

P0132, P0152 A/F SENSOR 1

6.

REPLACE A/F SENSOR 1

Replace malfunctioning A/F sensor 1.

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

2009 Pathfinder

P0133, P0153 A/F SENSOR 1

EC-633

< COMPONENT DIAGNOSIS >

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P0133, P0153 A/F SENSOR 1

Component Description

INFOID:0000000004333353

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement   = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide   range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of approxi-
mately 800

°

C (1,472

°

F).

On Board Diagnosis Logic

INFOID:0000000003936566

To judge malfunctions, this diagnosis measures response time of the A/F signal computed by ECM from the A/
F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control con-
stant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F
signal cycling time index) is inordinately long or not.

DTC Confirmation Procedure

INFOID:0000000003936567

NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.
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.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

 WITH CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

PBIB3353E

PBIB3354E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0133
0133
(Bank 1)

Air fuel ratio (A/F) sensor 1 
circuit slow response

• The response of the A/F signal computed by 

ECM from A/F sensor 1 signal takes more than 
the specified time.

• Harness or connectors

(The A/F sensor 1 circuit is open or 
shorted.)

• A/F sensor 1
• A/F sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leakage
• Exhaust gas leakage
• PCV
• Mass air flow sensor

P0153
0153
(Bank 2)

2009 Pathfinder

EC-634

< COMPONENT DIAGNOSIS >

[VK56DE]

P0133, P0153 A/F SENSOR 1

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

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

6.

Let engine idle for 1 minute.

7.

Select “A/F SEN1(B1) P1278/P1279” (for DTC P0133) or “A/F SEN1(B2) P1288/P1289” (for DTC P0153)
of “A/F SEN1” in “DTC WORK SUPPORT” mode with CONSULT-III.

8.

Touch “START”.
If “COMPLETED” appears on CONSULT-III screen, go to step 10.
If “COMPLETED” does not appear on CONSULT-III screen, go to the following step.

9.

After perform the following procedure, “TESTING” will be displayed on the CONSULT-III screen.

a.

Increase the engine speed up to between 4,000 and 5,000 rpm and maintain that speed for 10 seconds.

b.

Fully release accelerator pedal and then let engine idle for approximately 10 seconds.
If “TESTING” is not displayed after 10 seconds, go to 

EC-557, "Inspection Procedure"

.

10. Wait for approximately 20 seconds at idle under the condition that “TESTING” is displayed on the CON-

SULT-III screen.

11. Check that “TESTING” changes to “COMPLETED”.

If “TESTING” changed to “OUT OF CONDITION”, go to 

EC-557, "Inspection Procedure"

.

12. Check that “OK” is displayed after touching “SELF-DIAG RESULT”.

If “NG” is displayed, go to 

EC-634, "Diagnosis Procedure"

.

 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.
Check that the total percentage should be within 

±

 15%.

If OK, go to the following step.
If NG, check the following.
• Intake air leakage
• Exhaust gas leakage
• Incorrect fuel pressure
• Lack of fuel
• Fuel injector
• Incorrect PCV hose connection
• PCV valve
• Mass air flow sensor

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Turn ignition switch ON.

6.

Turn ignition switch OFF and wait at least 10 seconds.

7.

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

8.

Let engine idle for 1 minute.

9.

Increase the engine speed up to between 4,000 and 5,000 rpm and maintain that speed for 10 seconds.

10. Fully release accelerator pedal and then let engine idle for approximately 1 minute.

11. Select Service $07 with GST.

If the 1st trip DTC is displayed, go to 

EC-634, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003936568

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten ground screws on the body.

2009 Pathfinder

P0133, P0153 A/F SENSOR 1

EC-635

< COMPONENT DIAGNOSIS >

[VK56DE]

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Refer to 

EC-568, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

RETIGHTEN AIR FUEL RATIO SENSOR 1

Loosen and retighten air fuel ratio (A/F) sensor 1.
Refer to 

EM-172, "Removal and Installation"

.

>> GO TO 3.

3.

CHECK EXHAUST GAS LEAKAGE

1.

Start engine and run it at idle.

2.

Listen for an exhaust gas leakage before three way catalyst (manifold).

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace malfunctioning part.

4.

CHECK FOR INTAKE AIR LEAKAGE

Listen for an intake air leakage after the mass air flow sensor.
OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace malfunctioning part.

5.

CLEAR THE SELF-LEARNING DATA

 With CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.

3.

Clear the self-learning control coefficient by touching “CLEAR” or “START”.

4.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P172, P0174 or P0175 detected? Is it difficult to start engine?

 Without CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

BBIA0539E

PBIB1216E

2009 Pathfinder

EC-636

< COMPONENT DIAGNOSIS >

[VK56DE]

P0133, P0153 A/F SENSOR 1

3.

Disconnect mass air flow sensor (1) harness connector.

-

: Vehicle front

4.

Restart engine and let it idle for at least 5 seconds.

5.

Stop engine and reconnect mass air flow sensor harness con-
nector.

6.

Check that DTC P0102 is displayed.

7.

Erase the DTC memory. Refer to 

EC-525, "Emission-related

Diagnostic Information"

.

8.

Check that DTC P0000 is displayed.

9.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171, P0172, P0174 or P0175 detected?
Is it difficult to start engine?

Yes or No

Yes

>> Perform trouble diagnosis for DTC P0171, P0174 or P0172, P0175. Refer to 

EC-659, "Diagnosis

Procedure"

 or 

EC-663, "Diagnosis Procedure"

.

No

>> GO TO 6.

6.

CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect A/F sensor 1 harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between A/F sensor 1 terminal 4 and ground with
CONSULT-III or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E2, F32
• IPDM E/R harness connector E119
• 15 A fuse (No. 54)
• Harness for open or short between A/F sensor 1 and IPDM E/R

>> Repair or replace harness or connectors.

8.

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

ALBIA0353ZZ

ALBIA0360ZZ

1.

A/F sensor 1 (bank 2) harness connector

2.

A/F sensor 1 (bank 2)

3.

A/F sensor 1 (bank 1)

4.

A/F sensor 1 (bank 1) harness connector

: Vehicle front

Voltage: Battery voltage

PBIB3308E

2009 Pathfinder

P0133, P0153 A/F SENSOR 1

EC-637

< COMPONENT DIAGNOSIS >

[VK56DE]

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1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between A/F sensor 1 terminals and ECM terminals as per the following.
Refer to Wiring Diagram.

4.

Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.

5.

Also check harness for short to power.

OK or NG

OK

>> GO TO 9.

NG

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

9.

CHECK A/F SENSOR 1 HEATER

Refer to 

EC-580, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 13.

10.

CHECK MASS AIR FLOW SENSOR

Refer to 

EC-596, "Component Inspection"

.

OK or NG

OK

>> GO TO 11. 

NG

>> Replace mass air flow sensor.

11.

CHECK PCV VALVE

Refer to 

EC-882, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> Repair or replace PCV valve.

12.

CHECK INTERMITTENT INCIDENT

Perform 

GI-49, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 13.

NG

>> Repair or replace malfunctioning part.

13.

REPLACE A/F SENSOR 1

Replace malfunctioning A/F sensor 1.

CAUTION:

A/F sensor 1 terminal

ECM terminal

Bank1

1

35

2

56

Bank 2

1

16

2

75

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

1

35

1

16

2

56

2

75

Continuity should not exist.

2009 Pathfinder