Nissan Altima HL32 Hybrid. Manual - part 309

 

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Nissan Altima HL32 Hybrid. Manual - part 309

 

 

EC-220

< COMPONENT DIAGNOSIS >

[QR25DE]

P0145 HO2S3

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground.

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

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors F58, F101

• Harness for open or short between heated oxygen sensor 3 and ECM

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

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

REPLACE HEATED OXYGEN SENSOR

Replace heated oxygen sensor 3.

CAUTION:

• Discard any 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 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

HO2S3

ECM

Continuity

Connector

Terminal

Connector

Terminal

F102

4

F13

34

Existed

HO2S3

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F102

4

F13

34

Ground

Not existed

P0146 HO2S3

EC-221

< COMPONENT DIAGNOSIS >

[QR25DE]

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P0146 HO2S3

Description

INFOID:0000000004211458

The heated oxygen sensor 3, after HC adsorption catalyst (Under

floor), monitors the oxygen level in the exhaust gas.

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 3 is not used for

engine control operation.

DTC Logic

INFOID:0000000004211459

DTC DETECTION LOGIC

The heated oxygen sensor 3 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 3, ECM monitors whether the voltage is unusually high during

the various driving condition such as fuel-cut.

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.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Activate “INSPECTION MODE 1” (

HBC-104

) to start engine, and warm up engine to 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. Turn ignition switch ON (READY).

6. Drive vehicle at a speed of 80 km/h (50 MPH) or more for at least 3 consecutive minutes.

CAUTION:

Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.

NOTE:

Keep the vehicle speed as steady as possible during the cruising.

7. Check 1st trip DTC.

SEF327R

PBIB1848E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0146

Heated oxygen sensor 3 
circuit no activity detect-
ed

An excessively high voltage from the sensor is 
sent to ECM.

• Harness or connectors

(The sensor circuit is open or shorted)

• Heated oxygen sensor 3

EC-222

< COMPONENT DIAGNOSIS >

[QR25DE]

P0146 HO2S3

Is 1st trip DTC detected?

YES

>> Go to 

EC-222, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004211460

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

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

GI-45, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK HO2S3 GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect heated oxygen sensor 3 harness connector.

3. Disconnect ECM harness connector.

4. Check the continuity between HO2S3 harness connector and ECM harness connector.

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

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors F58, F101

• Harness for open or short between heated oxygen sensor 3 and ECM

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

4.

CHECK HO2S3 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check the continuity between HO2S3 harness connector and ECM harness connector.

2. Check the continuity between HO2S3 harness connector or ECM harness connector and ground.

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

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors F58, F101

• Harness for open or short between heated oxygen sensor 3 and ECM

HO2S3

ECM

Continuity

Connector

Terminal

Connector

Terminal

F102

1

F13

35

Existed

HO2S3

ECM

Continuity

Connector

Terminal

Connector

Terminal

F102

4

F13

34

Existed

HO2S3

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F102

4

F13

34

Ground

Not existed

P0146 HO2S3

EC-223

< COMPONENT DIAGNOSIS >

[QR25DE]

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

6.

CHECK HO2S3 CONNECTOR FOR WATER

Check connectors for water.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness or connectors.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

REPLACE HEATED OXYGEN SENSOR

Replace heated oxygen sensor 3.

CAUTION:

• Discard any 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 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

Water should not exist.

 

 

 

 

 

 

 

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