Nissan Maxima. Manual - part 434

EC-220

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0130, P0150 A/F SENSOR 1

NO

>> Go to 

EC-220, "Diagnosis Procedure"

.

Component Function Check

INFOID:0000000010094931

1.

PERFORM COMPONENT FUNCTION CHECK

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, then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (31

MPH).

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

Never apply brake when 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. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Go to 

EC-220, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010094932

Regarding Wiring Diagram information, refer to 

EC-554, "Wiring Diagram"

.

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

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

1. Disconnect A/F sensor 1 harness connector.

2. Turn ignition switch ON.

3. Check the voltage between A/F sensor 1 harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• IPDM E/R harness connector F10

• 15 A fuse (No. 37)

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

>> Repair or replace harness or connectors.

DTC

A/F sensor 1

Ground

Voltage

Bank

Connector

Terminal

P0130

1

F12

4

Ground

Battery voltage

P0150

2

F61

4

PBIB3308E

P0130, P0150 A/F SENSOR 1

EC-221

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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EC

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4.

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

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

4. Check the continuity between A/F sensor 1 harness connector and ground, or ECM harness connector

and ground.

5. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK INTERMITTENT INCIDENT

Perform 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace malfunctioning part.

6.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

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

EM-31, "Removal and Installation (LH)"

 (LH) or

EM-33, "Removal and Installation (RH)"

 (RH).

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 Oxygen Sensor Thread

Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant

(commercial service tool).

>> INSPECTION END

DTC

A/F sensor 1

ECM

Continuity

Bank

Connector

Terminal

Connector

Terminal

P0130

1

F12

1

F13

45

Existed

2

49

P0150

2

F61

1

53

2

57

DTC

A/F sensor 1

Ground

Continuity

Bank

Connector

Terminal

P0130

1

F12

1

Ground

Not existed

2

P0150

2

F61

1

2

DTC

ECM

Ground

Continuity

Connector

Terminal

P0130

F13

45

Ground

Not existed

49

P0150

53

57

EC-222

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0131, P0151 A/F SENSOR 1

P0131, P0151 A/F SENSOR 1

Description

INFOID:0000000010094933

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 via 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).

DTC Logic

INFOID:0000000010094934

DTC DETECTION LOGIC

To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1

signal is not inordinately low.

DTC CONFIRMATION PROCEDURE

1.

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:

Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.

>> GO TO 2.

2.

CHECK A/F SENSOR 1 FUNCTION

With CONSULT

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.

3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.

JMBIA0112GB

PBIB3354E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible Cause

P0131

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

• The A/F signal computed by ECM from the A/F 

sensor 1 signal is constantly approx. 0 V.

• Harness or connectors

(The sensor circuit is open or shorted.)

• A/F sensor 1

P0151

Air fuel ratio (A/F) sensor 1 
(bank 2) circuit low voltage

P0131, P0151 A/F SENSOR 1

EC-223

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

With GST

Follow the procedure “With CONSULT” above.
Is the indication constantly approx. 0 V?

YES

>> Go to 

EC-223, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn ignition switch OFF, wait at least 10 seconds.

2. Turn ignition switch ON.

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

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

CAUTION:

Always drive vehicle at a safe speed.

5. Maintain the following conditions for about 20 consecutive seconds.

NOTE:

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

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

1.

6. Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?

YES

>> Go to 

EC-223, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010094935

Regarding Wiring Diagram information, refer to 

EC-554, "Wiring Diagram"

.

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

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

1. Disconnect A/F sensor 1 harness connector.

2. Turn ignition switch ON.

3. Check the voltage between A/F sensor 1 harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

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

Selector lever

Suitable position

DTC

A/F sensor 1

Ground

Voltage

Bank

Connector

Terminal

P0131

1

F12

4

Ground

Battery voltage

P0151

2

F61

4

PBIB3308E