Nissan Pathfinder (2007 year). Manual - part 170

 

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Nissan Pathfinder (2007 year). Manual - part 170

 

 

DTC P0128 THERMOSTAT FUNCTION

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Component Inspection

UBS00K6R

ENGINE COOLANT TEMPERATURE SENSOR

1.

Check resistance between engine coolant temperature sensor
terminals 1 and 2 as shown in the figure.

<Reference data>

2.

If NG, replace engine coolant temperature sensor.

Removal and Installation

UBS00K6S

ENGINE COOLANT TEMPERATURE SENSOR

Refer to 

CO-24, "WATER INLET AND THERMOSTAT ASSEMBLY"

  .

PBIB2005E

Engine coolant temperature

°

C (

°

F)

Resistance

k

20 (68)

2.1 - 2.9

50 (122)

0.68 - 1.00

90 (194)

0.236 - 0.260

SEF012P

EC-228

DTC P0130, P0150 A/F SENSOR 1

2007 Pathfinder

DTC P0130, P0150 A/F SENSOR 1

PFP:22693

Component Description

UBS00KEU

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 about 800

°

C

(1,472

°

F).

CONSULT-II Reference Value in Data Monitor Mode

UBS00KEV

Specification data are reference values.

On Board Diagnosis Logic

UBS00S21

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/
F) sensor 1 signal fluctuates according to fuel feedback control.

DTC Confirmation Procedure

UBS00S22

Perform PROCEDURE FOR MALFUNCTION A first.
If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.

PROCEDURE FOR MALFUNCTION A

 With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

PBIB3353E

PBIB3354E

MONITOR ITEM

CONDITION

SPECIFICATION

A/F SEN1 (B1)
A/F SEN1 (B2)

Engine: After warming up

Maintaining engine speed at 
2,000 rpm

Fluctuates around 2.2V

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P0130
0130
(Bank 1)

Air fuel ratio (A/F) sensor 1 
circuit

A)

The A/F signal computed by ECM from the A/F 
sensor 1 signal is constantly in the range other 
than approx. 2.2V.

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

Air fuel ratio (A/F) sensor 1

P0150
0150
(Bank 2)

B)

The A/F signal computed by ECM from the A/F 
sensor 1 signal is constantly approx. 2.2V.

DTC P0130, P0150 A/F SENSOR 1

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2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Let engine idle for 2 minutes.

4.

If 1st trip DTC is detected, go to 

EC-234, "Diagnostic Procedure"

.

 With GST

Follow the procedure “With CONSULT-II” above.

PROCEDURE FOR MALFUNCTION B

CAUTION:

Always drive vehicle at a safe speed.

 With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Select “A/F SEN1 (B1)” or “A/F SEN1 (B2)” in “DATA MONITOR” mode with CONSULT-II.

3.

Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
If the indication is constantly approx. 2.2V and does not fluctuates, go to 

EC-234, "Diagnostic Procedure"

 .

If the indication fluctuates around 2.2V, go to next step.

4.

Select “A/F SEN1 (B1) P1276” (for DTC P0130) or “A/F SEN1 (B2) P1286” (for DTC P0150) of “A/F
SEN1” in “DTC WORK SUPPORT” mode with CONSULT-II.

5.

Touch “START”.

6.

When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen.

If “TESTING” is not displayed after 20 seconds, retry from
step 2.

7.

Release accelerator pedal fully.

NOTE:
Never apply brake during releasing the accelerator pedal.

SEF174Y

ENG SPEED

1,750 - 3,200 rpm

VHCL SPEED SE

More than 64 km/h (40 MPH)

B/FUEL SCHDL

1.0 - 8.0 msec

Shift lever

D position with “OD” OFF

SEF576Z

SEF577Z

EC-230

DTC P0130, P0150 A/F SENSOR 1

2007 Pathfinder

8.

Make sure that “TESTING” changes to “COMPLETED”.
If “TESTING” changed to “OUT OF CONDITION”, retry from
step 6.

9.

Make sure that “OK” is displayed after touching “SELF-DIAG
RESULT”. 
If “NG” is displayed, go to 

EC-234, "Diagnostic Procedure"

 .

Overall Function Check

UBS00KEY

PROCEDURE FOR MALFUNCTION B

Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC
might not be confirmed.

 With GST

1.

Start engine and warm it up to normal operating temperature.

2.

Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.

3.

Set D position with “OD” OFF, then release the accelerator pedal fully until the vehicle speed decreases to
50 km/h (30 MPH).

NOTE:
Never apply brake during releasing the accelerator pedal.

4.

Repeat steps 2 and 3 for five times.

5.

Stop the vehicle and turn ignition switch OFF.

6.

Wait at least 10 seconds and restart engine.

7.

Repeat steps 2 and 3 for five times.

8.

Stop the vehicle and connect GST to the vehicle.

9.

Make sure that no DTC is displayed.
If the DTC is displayed, go to 

EC-234, "Diagnostic Procedure"

 .

SEF578Z

DTC P0130, P0150 A/F SENSOR 1

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Wiring Diagram

UBS00KEZ

BANK 1

BBWA2811E

EC-232

DTC P0130, P0150 A/F SENSOR 1

2007 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.)

TERMI-

NAL 

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
(More than 140 seconds after starting 
engine)

Approximately 2.9 - 8.8V

35

O

A/F sensor 1 (Bank 1)

[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm

Approximately 1.8V
Output voltage varies with air 
fuel ratio.

56

LG

A/F sensor 1 (Bank 1)

[Ignition switch: ON]

Approximately 2.2V

PBIA8148J

DTC P0130, P0150 A/F SENSOR 1

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BANK 2

BBWA2812E

EC-234

DTC P0130, P0150 A/F SENSOR 1

2007 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

UBS00KF0

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

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

EC-153, "Ground Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

TERMI-

NAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

16

BR

A/F sensor 1 (Bank 2)

[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm

Approximately 1.8V
Output voltage varies with air 
fuel ratio.

24
43

G
G

A/F sensor 1 heater (Bank 2)

[Engine is running]

Warm-up condition

Idle speed
(More than 140 seconds after starting 
engine)

Approximately 2.9 - 8.8V

75

P

A/F sensor 1 (Bank 2)

[Ignition switch: ON]

Approximately 2.2V

PBIA8148J

BBIA0539E

 

 

 

 

 

 

 

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