Nissan Murano Z50 (2007 year). Manual

DTC P0133, P0153 A/F SENSOR 1

EC-261

Revision: 2006 July

2007 Murano

Wiring Diagram

NBS003AG

BANK 1

TBWM1631E

EC-262

DTC P0133, P0153 A/F SENSOR 1

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.)

TER-

MINAL

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

EC-264

DTC P0133, P0153 A/F SENSOR 1

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

NBS003AH

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.

TER-

MINAL

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

DTC P0133, P0153 A/F SENSOR 1

EC-265

Revision: 2006 July

2007 Murano

RETIGHTEN A/F SENSOR 1

Loosen and retighten the A/F sensor (manifold).

>> GO TO 3.

CHECK EXHAUST GAS LEAK

Start engine and run it at idle.

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

OK or NG

>> GO TO 4.

>> Repair or replace.

CHECK FOR INTAKE AIR LEAK

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

OK or NG

>> GO TO 5.

>> Repair or replace.

Tightening torque: 40 - 60 N-m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)

PBIB2291E

PBIB1216E

EC-266

DTC P0133, P0153 A/F SENSOR 1

Revision: 2006 July

2007 Murano

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

Start engine and warm it up to normal operating temperature.

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

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

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

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF.

Disconnect mass air flow sensor harness connector.

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

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

Make sure DTC P0102 is displayed.

Erase the DTC memory. Refer to

EC-58, "HOW TO ERASE

Make sure DTC P0000 is displayed.

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-306, "DTC

P0171, P0174 FUEL INJECTION SYSTEM FUNCTION"

EC-318, "DTC P0172, P0175 FUEL

INJECTION SYSTEM FUNCTION"

>> GO TO 6.

SEF968Y

PBIB1353E

DTC P0133, P0153 A/F SENSOR 1

EC-267

Revision: 2006 July

2007 Murano

CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect 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 12.

>> GO TO 7.

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 8.

>> GO TO 9.

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)]

EC-268

DTC P0133, P0153 A/F SENSOR 1

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 10.

>> Repair harness or connectors.

10.

CHECK CONDENSER

Refer to

EC-168, "CONDENSER"

OK or NG

>> GO TO 11.

>> Replace condenser.

11.

CHECK INTERMITTENT INCIDENT

Refer to

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Continuity should exist.

DTC P0133, P0153 A/F SENSOR 1

EC-269

Revision: 2006 July

2007 Murano

12.

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

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 13.

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

13.

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

Refer to

EC-168, "Component Inspection"

OK or NG

>> GO TO 14.

>> GO TO 17.

14.

CHECK MASS AIR FLOW SENSOR

Refer to

EC-194, "Component Description"

OK or NG

>> GO TO 15.

>> Replace mass air flow sensor.

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.

EC-270

DTC P0133, P0153 A/F SENSOR 1

Revision: 2006 July

2007 Murano

15.

CHECK PCV VALVE

Refer to

EC-42, "POSITIVE CRANKCASE VENTILATION"

OK or NG

>> GO TO 16.

>> Repair or replace PCV valve.

16.

CHECK INTERMITTENT INCIDENT

Perform

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

OK or NG

>> Go to 17.

>> Repair or replace.

17.

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

Removal and Installation

NBS003AI

AIR FUEL RATIO (A/F) SENSOR 1

Refer to

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

DTC P0137, P0157 HO2S2

EC-271

Revision: 2006 July

2007 Murano

DTC P0137, P0157 HO2S2

PFP:226A0

Component Description

NBS00388

The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1V in richer conditions to 0V in leaner condi-
tions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.

CONSULT-II Reference Value in Data Monitor Mode

NBS00389

Specification data are reference values.

On Board Diagnosis Logic

NBS0038A

The heated oxygen sensor 2 has a much longer switching time
between rich and lean than the air fuel ratio (A/F) sensor 1. The oxy-
gen storage capacity before the three way catalyst (manifold) causes
the longer switching time. To judge the malfunctions of heated oxy-
gen sensor 2, ECM monitors whether the maximum voltage of the
sensor is sufficiently high during the various driving condition such
as fuel-cut.

SEF327R

MONITOR ITEM

CONDITION

SPECIFICATION

HO2S2 (B1)
HO2S2 (B2)

●

Revving engine from idle to 3,000 rpm quickly after the following condi-
tions are met

–

Engine: After warming up

–

Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
at idle for 1 minute under no load

0 - 0.3V

←→

Approx. 0.6 -

1.0V

HO2S2 MNTR (B1)
HO2S2 MNTR (B2)

LEAN

←→

RICH

PBIB2162E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0137
0137
(Bank 1)

Heated oxygen sensor
2 circuit low voltage

The maximum voltage from the sensor is not
reached to the specified voltage.

●

Harness or connectors
(The sensor circuit is open or shorted)

●

Heated oxygen sensor 2

●

Fuel pressure

●

Fuel injector

●

Intake air leaks

P0157
0157
(Bank 2)

EC-272

DTC P0137, P0157 HO2S2

Revision: 2006 July

2007 Murano

DTC Confirmation Procedure

NBS0038B

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.

WITH CONSULT-II

TESTING CONDITION:
For better results, perform DTC WORK SUPPORT at a temperature of 0 to 30

C (32 to 86

F).

Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.

Start engine and warm it up to the normal operating tempera-
ture.

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 1 minute under no load.

Let engine idle for 1 minute.

Make sure that “COOLAN TEMP/S” indicates more than 70

(158

F).

If not, warm up engine and go to next step when “COOLAN
TEMP/S” indication reaches to 70

C (158

F).

Open engine hood.

Select “HO2S2 (B1) P1147” (for DTC P0137) or “HO2S2 (B2) P1167” (for DTC P0157) of “HO2S2” in
“DTC WORK SUPPORT” mode with CONSULT-II.

Start engine and following the instruction of CONSULT-II.

NOTE:
It will take at most 10 minutes until “COMPLETED” is displayed.

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

If “NG” is displayed, refer to

EC-277, "Diagnostic Procedure"

If “CAN NOT BE DIAGNOSED” is displayed, perform the following.

Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).

Return to step 1.

Overall Function Check

NBS0038C

Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st
trip DTC might not be confirmed.

WITH GST

Start engine and warm it up to the 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 1 minute under no load.

Let engine idle for 1 minute.

Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
ground.

SEF174Y

PBIB2373E

DTC P0137, P0157 HO2S2

EC-273

Revision: 2006 July

2007 Murano

Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.78V at least once during this
procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.

Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in D
position.
The voltage should be above 0.78V at least once during this
procedure.

If NG, go to

EC-277, "Diagnostic Procedure"

PBIB1607E

DTC P0137, P0157 HO2S2

EC-275

Revision: 2006 July

2007 Murano

Specification data are reference values and are measured between each terminal and ground.

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.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

P/L

Heated oxygen sensor 2
heater (Bank 1)

[Engine is running]

●

Engine speed: Below 3,600 rpm after the
following conditions are met

–

Engine: After warming up

–

Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load.

0 - 1.0V

[Ignition switch: ON]

●

Engine stopped

[Engine is running]

●

Engine speed: Above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

Heated oxygen sensor 2
(Bank 1)

[Engine is running]

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are met

–

Engine: After warming up

–

Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load

0 - Approximately 1.0V

Sensor ground
(Heated oxygen sensor 2)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

Nissan Murano Z50 (2007 year). Manual - part 82