Nissan Murano Z50 (2007 year). Manual

DTC P0131, P0151 A/F SENSOR 1

EC-245

Revision: 2006 July

2007 Murano

CHECK CONDENSER CIRCUIT-II

Disconnect condenser harness connectors.

Check harness continuity between fuse block (J/B) terminal 9A and condenser terminal 1, condenser ter-
minal 2 and ground.
Refer to Wiring Diagram.

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

OK or NG

>> GO TO 6.

>> Repair harness or connectors.

CHECK CONDENSER

Refer to

EC-168, "CONDENSER"

OK or NG

>> GO TO 7.

>> Replace condenser.

CHECK INTERMITTENT INCIDENT

Refer to

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Continuity should exist.

EC-246

DTC P0131, P0151 A/F SENSOR 1

Revision: 2006 July

2007 Murano

CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT

Turn ignition switch OFF.

Disconnect ECM harness connector.

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

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

Also check harness for short to power.

OK or NG

>> GO TO 9.

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

CHECK INTERMITTENT INCIDENT

Perform

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

OK or NG

>> Go to 10.

>> Repair or replace.

10.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

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

CAUTION:

●

Discard any air fuel ratio (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 air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxy-
gen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

A/F sensor 1 terminal

ECM terminal

Bank 1

Bank 2

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

Continuity should not exist.

DTC P0131, P0151 A/F SENSOR 1

EC-247

Revision: 2006 July

2007 Murano

Removal and Installation

NBS0039I

AIR FUEL RATIO (A/F) SENSOR 1

Refer to

EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

EC-248

DTC P0132, P0152 A/F SENSOR 1

Revision: 2006 July

2007 Murano

DTC P0132, P0152 A/F SENSOR 1

PFP:22693

Component Description

NBS0039J

The A/F sensor is a planar dual-cell limit current sensor. The sensor
element of the A/F sensor is the combination of a Nernst concentra-
tion cell (sensor cell) with an oxygen-pump cell, 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 (0.7 <

< air).

The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance.

An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor is able to
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800

C (1,292 - 1,472

F).

CONSULT-II Reference Value in Data Monitor Mode

NBS0039K

Specification data are reference values.

On Board Diagnosis Logic

NBS0039L

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 is not inordinately high.

DTC Confirmation Procedure

NBS0039M

CAUTION:

Always drive at a safe speed.

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.

WITH CONSULT-II

Start engine and warm it up to normal operating temperature.

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

SEF579Z

SEF580Z

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 1.5V

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P0132
0132
(Bank 1)

Air fuel ratio (A/F) sensor 1
circuit high voltage

●

The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 5V.

●

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

●

Air fuel ratio (A/F) sensor 1

P0152
0152
(Bank 2)

DTC P0132, P0152 A/F SENSOR 1

EC-249

Revision: 2006 July

2007 Murano

Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
If the indication is constantly approx. 5V, go to

EC-253, "Diag-

nostic Procedure"

If the indication is not constantly approx. 5V, go to next step.

Turn ignition switch OFF, wait at least 10 seconds and then
restart engine.

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

Maintain the following conditions for about 20 consecutive sec-
onds.

NOTE:

●

Keep the accelerator pedal as steady as possible during the cruising.

●

If this procedure is not completed within 1 minute after restarting engine at step 4, return to step
4.

If 1st trip DTC is displayed, go to

EC-253, "Diagnostic Procedure"

WITH GST

Follow the procedure “WITH CONSULT-II” above.

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

SEF581Z

DTC P0132, P0152 A/F SENSOR 1

EC-251

Revision: 2006 July

2007 Murano

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)

G/B

A/F sensor 1 heater
(Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

LG/B

A/F sensor 1 (Bank 1)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 3.1V

O/L

Approximately 2.6V

BR/Y

Approximately 2.3V

Y/R

Approximately 2.3V

PBIB1584E

DTC P0132, P0152 A/F SENSOR 1

EC-253

Revision: 2006 July

2007 Murano

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

NBS0039O

CHECK GROUND CONNECTIONS

Turn ignition switch OFF.

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

EC-150, "Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connections.

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

A/F sensor 1 heater
(Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 5V

A/F sensor 1 (Bank 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 2.6V

Approximately 2.3V

G/Y

Approximately 3.1V

Approximately 2.3V

PBIB1584E

PBIB1835E

EC-254

DTC P0132, P0152 A/F SENSOR 1

Revision: 2006 July

2007 Murano

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

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

Turn ignition switch ON.

Check voltage between A/F sensor 1 terminal 3 and ground with
CONSULT-II or tester.

OK or NG

>> GO TO 8.

>> GO TO 3.

CHECK CONDENSER CIRCUIT-I

Turn ignition switch OFF.

Disconnect fuse block (J/B) harness connector M1.

Check resistance between fuse block (J/B) terminal 9A and ground.
Refer to Wiring Diagram.

OK or NG

>> GO TO 4.

>> GO TO 5.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M82, F102

●

Fuse block (J/B) connector M1

●

15A fuse

●

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

>> Repair harness or connectors.

Voltage: Battery voltage

PBIB2293E

PBIB1683E

Resistance: Above 1M

Ω

[at 25

C (77

F)]

DTC P0132, P0152 A/F SENSOR 1

EC-255

Revision: 2006 July

2007 Murano

CHECK CONDENSER CIRCUIT-II

Disconnect condenser harness connectors.

Check harness continuity between fuse block (J/B) terminal 9A and condenser terminal 1, condenser ter-
minal 2 and ground.
Refer to Wiring Diagram.

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

OK or NG

>> GO TO 6.

>> Repair harness or connectors.

CHECK CONDENSER

Refer to

EC-168, "CONDENSER"

OK or NG

>> GO TO 7.

>> Replace condenser.

CHECK INTERMITTENT INCIDENT

Refer to

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Continuity should exist.

EC-256

DTC P0132, P0152 A/F SENSOR 1

Revision: 2006 July

2007 Murano

CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT

Turn ignition switch OFF.

Disconnect ECM harness connector.

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

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

Also check harness for short to power.

OK or NG

>> GO TO 9.

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

CHECK INTERMITTENT INCIDENT

Perform

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

OK or NG

>> Go to 10.

>> Repair or replace.

10.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

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

CAUTION:

●

Discard any air fuel ratio (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 air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxy-
gen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

A/F sensor 1 terminal

ECM terminal

Bank 1

Bank 2

Continuity should exist.

Bank 1

Bank 2

A/F sensor 1 terminal

ECM terminal

A/F sensor 1 terminal

ECM terminal

Continuity should not exist.

DTC P0132, P0152 A/F SENSOR 1

EC-257

Revision: 2006 July

2007 Murano

Removal and Installation

NBS0039P

AIR FUEL RATIO (A/F) SENSOR 1

Refer to

EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

EC-258

DTC P0133, P0153 A/F SENSOR 1

Revision: 2006 July

2007 Murano

DTC P0133, P0153 A/F SENSOR 1

PFP:22693

Component Description

NBS003AC

The air fuel ratio (A/F) sensor 1 is a planar dual-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is the combination of a
Nernst concentration cell (sensor cell) with an oxygen-pump cell,
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 (0.7 <

< air).

The exhaust gas components diffuse through the diffusion gap at the
electrode of the oxygen pump and Nernst concentration cell, where
they are brought to thermodynamic balance.

An electronic circuit controls the pump current through the oxygen-
pump cell so that the composition of the exhaust gas in the diffusion
gap remains constant at = 1. Therefore, the A/F sensor 1 is able to
indicate air/fuel ratio by this pumping of current. In addition, a heater
is integrated in the sensor to ensure the required operating tempera-
ture of 700 - 800

C (1,292 - 1,472

F).

CONSULT-II Reference Value in Data Monitor Mode

NBS003AD

Specification data are reference values.

On Board Diagnosis Logic

NBS003AE

To judge the malfunction of A/F sensor 1, 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 constant, and the A/F sensor 1 temperature index. Judgment is based on whether the com-
pensated time (the A/F signal cycling time index) is inordinately long or not.

SEF579Z

SEF580Z

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 1.5V

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.)

●

Air fuel ratio (A/F) sensor 1

●

Air fuel ratio (A/F) sensor 1 heater

●

Fuel pressure

●

Fuel injector

●

Intake air leaks

●

Exhaust gas leaks

●

PCV

●

Mass air flow sensor

P0153
0153
(Bank 2)

DTC P0133, P0153 A/F SENSOR 1

EC-259

Revision: 2006 July

2007 Murano

DTC Confirmation Procedure

NBS003AF

WITH CONSULT-II

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

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

Let engine idle for 1 minute.

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

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

After perform the following procedure, “TESTING” will be dis-
played on the CONSULT-II screen.

Increase the engine speed up to 4,000 to 5,000 rpm and keep it
for 10 seconds.

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

EC-

131, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

Wait for about 20 seconds at idle at under the condition that
“TESTING” is displayed on the CONSULT-II screen.

Make sure that “TESTING” changes to “COMPLETED”.
If “TESTING” changed to “OUT OF CONDITION”, refer to

EC-131, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

10. Make sure that “OK” is displayed after touching “SELF-DIAG

RESULT”.
If “NG” is displayed, go to

EC-264, "Diagnostic Procedure"

PBIB0756E

PBIB1925E

PBIB0758E

EC-260

DTC P0133, P0153 A/F SENSOR 1

Revision: 2006 July

2007 Murano

WITH GST

Start engine and warm it up to normal operating temperature.

Select Service $01 with GST.

Calculate the total value of “Short term fuel trim” and “Long term fuel trim” indications.
Make sure that the total percentage should be within

15%.

If OK, go to the following step.
If NG, 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

Turn ignition switch OFF and wait at least 10 seconds.

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

Let engine idle for 1 minute.

Increase the engine speed up to 4,000 to 5,000 rpm and keep it for 10 seconds.

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

Select Service $07 with GST.
If 1st trip DTC is detected, go to

EC-264, "Diagnostic Procedure"

Nissan Murano Z50 (2007 year). Manual - part 81