2014 NISSAN TEANA Service Manual

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Page 1273 of 4801

NISSAN TEANA 2014 Service Manual
P0137 HO2S2EC-273
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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5.CHECK HEATED OXYGEN SENSOR 2-3
Check the voltage between ECM harness connector and ground as per the following

Page 1274 of 4801

NISSAN TEANA 2014 Service Manual
EC-274
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0138 HO2S2
P0138 HO2S2
DTC LogicINFOID:0000000009462224
DTC DETECTION LOGIC
The heated oxygen sensor 2 has a much longer switching time between rich and lean

Page 1275 of 4801

NISSAN TEANA 2014 Service Manual
P0138 HO2S2EC-275
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10

P0138 HO2S2EC-275
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1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 2 minutes.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-276, "Diagnosis Procedure".
NO-1 >> With CONSULT: GO TO 3.
NO-2 >> Without CONSULT: GO TO 5.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
NOTE:
For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30 °C (32 to 86 °F).
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP /S” indication is more than 70°C (158 °F).
If not, warm up engine and go to next step w hen “COOLAN TEMP/S” indication reaches 70 °C (158 °F).
7. Open engine hood.
8. Select “HO2S2 (B1) P1146” of “HO2S2” in “DTC WORK SUPPORT” mode of “ENGINE” using CONSULT.
9. Follow the instruction of CONSULT.
NOTE:
It will take at most 10 minutes until “COMPLETED” is displayed.
10. Touch “SELF-DIAG RESULT”.
Which is displayed on CONSULT
OK >> INSPECTION END
NG >> Proceed to EC-276, "Diagnosis Procedure"
.
CAN NOT BE DIAGNOSED>>GO TO 4.
4.PERFORM DTC CONFIRMATION PROC EDURE FOR MALFUNCTION B 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 FOR MALFUNCTION B
Perform component function check. Refer to EC-276, "Diagnosis Procedure"
.
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 >> Proceed to EC-276, "Diagnosis Procedure"
.
Component Function CheckINFOID:0000000009462225
1.PERFORM COMPONENT FUNCTION CHECK-1
Without CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Check the voltage between ECM harness connector and ground as per the following condition.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1276 of 4801

NISSAN TEANA 2014 Service Manual
EC-276
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0138 HO2S2
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION

Page 1277 of 4801

NISSAN TEANA 2014 Service Manual
P0138 HO2S2EC-277
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Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace error-detected parts.
3.CHECK HO2S2 GRO

Page 1278 of 4801

NISSAN TEANA 2014 Service Manual
EC-278
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0138 HO2S2
5.CHECK HEATED OXYGEN SENSOR 2
Check the heated oxygen sensor 2. Refer to EC-279, "Component Inspection"
.
Is the inspection result normal?
YES >

EC-278
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0138 HO2S2
5.CHECK HEATED OXYGEN SENSOR 2
Check the heated oxygen sensor 2. Refer to EC-279, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> GO TO 6.
6.REPLACE HEATED OXYGEN SENSOR 2
Replace heated oxygen sensor 2. Refer to EX-5, "Exploded View"
.
CAUTION:
• Discard any sensor which has been dropped from a he ight 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 usi ng Oxygen Sensor Thread Cleaner
[commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial
service tool).
>> INSPECTION END
7.CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
1. Clear the mixture ratio self-learning value. Refer to EC-181, "Work Procedure"
.
2. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0172 detected? Is it difficult to start engine?
YES >> Perform trouble diagnosis for DTC P0172. Refer to EC-274, "DTC Logic".
NO >> GO TO 8.
8.CHECK HO2S2 GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 harness connector.
3. Disconnect ECM harness connector.
4. Check the continuity between HO2S2 harness connector and ECM harness connector.
*1: Except for California
*2: For California
5. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace error-detected parts.
9.CHECK HO2S2 INPUT SIGNAL CIRCUIT
1. Check the continuity between HO2S2 harness connector and ECM harness connector.
*1: Except for California
*2: For California
2. Check the continuity between HO2S2 harness connector and ground, or ECM harness connector and
ground.
+ −
Continuity
HO2S2 ECM
Connector Terminal Connector Terminal
F42 1 F14
*1
F91*223 Existed
+
−
Continuity
HO2S2 ECM
Connector Terminal Connector Terminal
F42 4 F14
*1
F91*222 Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1279 of 4801

NISSAN TEANA 2014 Service Manual
P0138 HO2S2EC-279
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*1: Except for California
*2: For California
3. Also check harness for short to power.
Is the inspection result

Page 1280 of 4801

NISSAN TEANA 2014 Service Manual
EC-280
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0138 HO2S2
7. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to
± 25%.
“HO2S2 (B1)” should be above 0.73 V at l east once whe

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