Nissan Pathfinder (2006 year). Manual - part 175

 

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Nissan Pathfinder (2006 year). Manual - part 175

 

 

DTC P0133, P0153 A/F SENSOR 1

EC-259

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EC

2006 Pathfinder

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

2

G

A/F sensor 1 heater
(Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

16

BR

A/F sensor 1 (Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 3.1V

35

O

Approximately 2.6V

56

LG

Approximately 2.3V

75

P

Approximately 2.3V

PBIB1584E

EC-260

DTC P0133, P0153 A/F SENSOR 1

2006 Pathfinder

BANK 2

BBWA2361E

DTC P0133, P0153 A/F SENSOR 1

EC-261

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EC

2006 Pathfinder

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

UBS00KF7

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten three ground screws on the body. Refer to 

EC-151, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

24

G

A/F sensor 1 heater
 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

57

GR

A/F sensor 1 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

58

O

Approximately 2.3V

76

V

Approximately 3.1V

77

Y

Approximately 2.3V

PBIB1584E

BBIA0539E

EC-262

DTC P0133, P0153 A/F SENSOR 1

2006 Pathfinder

2. 

RETIGHTEN AIR FUEL RATIO (A/F) SENSOR 1

Loosen and retighten A/F sensor 1.

>> GO TO 3.

3. 

CHECK EXHAUST GAS LEAK

1.

Start engine and run it at idle.

2.

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

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace.

4. 

CHECK FOR INTAKE AIR LEAK

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

OK

>> GO TO 5.

NG

>> Repair or replace.

Tightening torque: 50 N-m (5.1 kg-m, 37 ft-lb)

BBIA0557E

PBIB1216E

DTC P0133, P0153 A/F SENSOR 1

EC-263

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2006 Pathfinder

5. 

CLEAR THE SELF-LEARNING DATA

 With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

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

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-II

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

3.

Disconnect mass air flow sensor harness connector.

4.

Restart engine and let it idle for at least 3 seconds.

5.

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

6.

Make sure DTC P0102 is displayed.

7.

Erase the DTC memory. Refer to 

EC-60, "HOW TO ERASE

EMISSION-RELATED DIAGNOSTIC INFORMATION"

 .

8.

Make sure 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-305, "DTC

P0171, P0174 FUEL INJECTION SYSTEM FUNCTION"

   or 

EC-317, "DTC P0172, P0175 FUEL

INJECTION SYSTEM FUNCTION"

 .

No

>> GO TO 6.

SEF968Y

BBIA0541E

EC-264

DTC P0133, P0153 A/F SENSOR 1

2006 Pathfinder

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 3 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 7.

7. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E5, F14

●

IPDM E/R connector E119

●

10A fuse

●

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

>> Repair or replace harness or connectors.

Voltage: Battery voltage

BBIA0544E

PBIB1683E

DTC P0133, P0153 A/F SENSOR 1

EC-265

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2006 Pathfinder

8. 

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 terminal and ECM terminal as follows.
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-169, "Component Inspection"

 .

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 13.

10. 

CHECK MASS AIR FLOW SENSOR

Refer to 

EC-192, "Component Inspection"

 .

OK or NG

OK

>> GO TO 11. 

NG

>> Replace mass air flow sensor.

A/F sensor 1 terminal

ECM terminal

Bank1

1

16

2

75

5

35

6

56

Bank 2

1

76

2

77

5

57

6

58

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

1

16

1

76

2

75

2

77

5

35

5

57

6

56

6

58

Continuity should not exist.

EC-266

DTC P0133, P0153 A/F SENSOR 1

2006 Pathfinder

11. 

CHECK PCV VALVE

Refer to 

EC-44, "POSITIVE CRANKCASE VENTILATION"

 .

OK or NG

OK

>> GO TO 12.

NG

>> Repair or replace PCV valve.

12. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Repair or replace.

13. 

REPLACE A/F SENSOR 1

Replace 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 Heated Oxygen Sensor
Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Removal and Installation

UBS00KF8

AIR FUEL RATIO (A/F) SENSOR 1

 Refer to 

EM-22, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

 .

 

 

 

 

 

 

 

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