Nissan Murano. Manual - part 525

EC-210

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0132, P0152 A/F SENSOR 1

>> INSPECTION END

P0137, P0157 HO2S2

EC-211

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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P0137, P0157 HO2S2

Description

INFOID:0000000009719955

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 1 V in richer conditions to 0 V in leaner con-
ditions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.

DTC Logic

INFOID:0000000009719956

DTC DETECTION LOGIC

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 of the three way catalyst (manifold) causes the
longer switching time. To judge the malfunctions of heated oxygen
sensor 2, ECM monitors whether the maximum voltage of the sensor
is sufficiently high during various driving conditions such as fuel-cut.

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Will CONSULT be used?

Will CONSULT be used?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

PRECONDITIONING

If DTC confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
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:
For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30

°

C (32 to 86

°

F).

>> GO TO 3.

SEF327R

SEF259VA

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0137

Heated oxygen sensor 2 
(bank 1) circuit low volt-
age

The maximum voltage from the sensor does not 
reach the specified voltage.

• Harness or connectors

(The sensor circuit is open or shorted)

• Heated oxygen sensor 2
• Fuel pressure
• Fuel injector
• Intake air leakage

P0157

Heated oxygen sensor 2 
(bank 2) circuit low volt-
age

EC-212

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0137, P0157 HO2S2

3.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

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

2.

Start engine and warm it up to the normal operating temperature.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Turn ignition switch ON.

5.

Turn ignition switch OFF and wait at least 10 seconds.

6.

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

7.

Let engine idle for 1 minute.

8.

Check that “COOLAN TEMP/S” indicates more than 70

°

C (158

°

F).

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

°

C (158

°

F).

9.

Open engine hood.

10. Select “HO2S2 (B1) P1147” (for DTC P0137) or “HO2S2 (B2) P1167” (for DTC P0157) of “HO2S2” in

“DTC WORK SUPPORT” mode with CONSULT.

11. Follow the instruction of CONSULT display.

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

12. Touch “SELF-DIAG RESULTS”.

Which is displayed on CONSULT screen?

OK

>> INSPECTION END

NG

>> Go to 

EC-213, "Diagnosis Procedure"

.

CAN NOT BE DIAGNOSED>>GO TO 4.

4.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

1.

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

2.

Perform DTC confirmation procedure again.

>> GO TO 3.

5.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-212, "Component Function Check"

.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-213, "Diagnosis Procedure"

.

Component Function Check

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1.

PERFORM COMPONENT FUNCTION CHECK-I

Without CONSULT

1.

Start engine and warm it up to the normal operating temperature.

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 1 minute under no load.

6.

Let engine idle for 1 minute.

7.

Check the voltage between ECM harness connector terminals under the following conditions.

P0137, P0157 HO2S2

EC-213

< DTC/CIRCUIT DIAGNOSIS >

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

PERFORM COMPONENT FUNCTION CHECK-II

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

PERFORM COMPONENT FUNCTION CHECK-III

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-213, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009719958

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

GI-47, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

DTC

ECM

Condition

Voltage

Connec-

tor

+

–

Terminal

Terminal

P0137

F8

33

[HO2S2 (bank 1) 

signal]

35

(Sensor 
ground)

Revving up to 4,000 rpm under no 
load at least 10 times

The voltage should be above 0.68 V 
at least once during this procedure.

P0157

34

[HO2S2 (bank 2) 

signal]

DTC

ECM

Condition

Voltage

Connec-

tor

+

–

Terminal

Terminal

P0137

F8

33

[HO2S2 (bank 1) 

signal]

35

(Sensor 
ground)

Keeping engine at idle for 10 min-
utes

The voltage should be above 0.68 V 
at least once during this procedure.

P0157

34

[HO2S2 (bank 2) 

signal]

DTC

ECM

Condition

Voltage

Connec-

tor

+

–

Terminal

Terminal

P0137

F8

33

[HO2S2 (bank 1) 

signal]

35

(Sensor 
ground)

Coasting from 80 km/h (50 MPH) 
with selector lever in the D position

The voltage should be above 0.68 V 
at least once during this procedure.

P0157

34

[HO2S2 (bank 2) 

signal]