2014 NISSAN TEANA stall speed

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

P0138 HO2S2EC-279
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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*1: Except for California
*2: For California
3. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
10.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 11.
11 .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 syst em threads using Oxygen Sensor Thread Cleaner
[commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial
service tool).
>> INSPECTION END
Component InspectionINFOID:0000000009462227
1.INSPECTION START
Do you have CONSULT?
Do you have CONSULT?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK HEATED OXYGEN SENSOR 2
With CONSULT
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. Select “FUEL INJECTION” in “ACTIVE TEST” mode of “ENGINE” using CONSULT, and select “HO2S2
(B1)” as the monitor item with CONSULT.
+
−Continuity
HO2S2
Connector Terminal F42 4 Ground Not existed
+ −Continuity
ECM
Connector Terminal
F14
*1
F91*222 Ground Not existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-286
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0139 HO2S2
5.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
Component InspectionINFOID:0000000009462231
1.INSPECTION START
Do you have CONSULT?
Do you have CONSULT?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK HEATED OXYGEN SENSOR 2
With CONSULT
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. Select “FUEL INJECTION” in “ACTIVE TEST” mode of “ENGINE” using CONSULT, and select “HO2S2
(B1)” as the monitor item with CONSULT.
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 when the “FUEL INJECTION” is + 25%.
“HO2S2 (B1)” should be below 0.18 V at least once when the “FUEL INJECTION” is − 25%.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 6.
3.CHECK HEATED OXYGEN SENSOR 2-1
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.
JPBIA5998GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0139 HO2S2EC-287
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 4.
4.CHECK HEATED OXYGEN SENSOR 2-2
Check the voltage between ECM harness connector and ground as per the following condition.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 5.
5.CHECK HEATED OXYGEN SENSOR 2-3
Check the voltage between ECM harness connector and ground as per the following condition.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
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 syst em threads using Oxygen Sensor Thread Cleaner
[commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial
service tool).
ECM
Condition Voltage
Connector +
−
Te r m i n a l
F14
*1
F91*222 23 Revving up to 4,000 rpm under no
load at least 10 times The voltage should be above 0.73 V
at least once during this procedure.
The voltage should be below 0.18 V
at least once during this procedure.
ECM
Condition Voltage
Connector +
−
Te r m i n a l
F14
*1
F91*222 23 Keeping engine speed at idle for 10
minutes The voltage should be above 0.73 V
at least once during this procedure.
The voltage should be below 0.18 V
at least once during this procedure.
ECM
Condition Voltage
Connector +
−
Te r m i n a l
F14
*1
F91*222 23 Coasting from 80 km/h (50 MPH) in
D position The voltage should be above 0.73 V
at least once during this procedure.
The voltage should be below 0.18 V
at least once during this procedure.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-296
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0171 FUEL INJECTION SYSTEM FUNCTION
5. Check the continuity between A/F sensor 1
harness connector and ground, or ECM harness connector
and ground.
*1: Except for California
*2: For California
6. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK FUEL PRESSURE
Check fuel pressure. Refer to EC-182, "Work Procedure"
.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging. Refer to EM-41, "Exploded View"
.
Is the inspection result normal?
YES >> Replace “fuel filter and fuel pump assembly”. Refer to FL-6, "Removal and Installation".
NO >> Repair or replace error-detected parts.
6.CHECK MASS AIR FLOW SENSOR
With CONSULT
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITO R” mode of “ENGINE” using CONSULT.
3. For specification, refer to EC-541, "Mass Air Flow Sensor"
.
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in Service $01 with GST.
3. For specification, refer to EC-541, "Mass Air Flow Sensor"
.
Is the measurement value within the specification?
YES >> GO TO 7.
NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or grounds. Refer to EC-232, "DTC Logic"
.
7.CHECK FUNCTION OF FUEL INJECTOR
With CONSULT
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT
+ −Continuity
A/F sensor 1
Connector Terminal
F24 1
Ground Not existed
2
+ −Continuity
ECM
Connector Terminal
F14
*1
F91*2
41 Ground Not existed
45
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-300
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0172 FUEL INJECTION SYSTEM FUNCTION
*1: Except for California
*2: For California
6. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK FUEL PRESSURE
Check fuel pressure. Refer to EC-182, "Work Procedure"
.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging. Refer to EM-41, "Exploded View"
.
Is the inspection result normal?
YES >> Replace “fuel filter and fuel pump assembly”. Refer to FL-6, "Removal and Installation".
NO >> Repair or replace error-detected parts.
6.CHECK MASS AIR FLOW SENSOR
With CONSULT
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITO R” mode of “ENGINE” using CONSULT.
3. For specification, refer to EC-541, "Mass Air Flow Sensor"
.
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in Service $01 with GST.
3. For specification, refer to EC-541, "Mass Air Flow Sensor"
.
Is the measurement value within the specification?
YES >> GO TO 7.
NO >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
grounds. Refer to EC-228, "DTC Logic"
.
7.CHECK FUNCTION OF FUEL INJECTOR
With CONSULT
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT
1. Let engine idle.
+
−Continuity
A/F sensor 1
Connector Terminal
F24 1
Ground Not existed
2
+ −Continuity
ECM
Connector Terminal
F14
*1
F91*2
41 Ground Not existed
45
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-334
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0420 THREE WAY CATALYST FUNCTION
Diagnosis Procedure
INFOID:0000000009462268
1.CHECK EXHAUST SYSTEM
Visually check exhaust tubes and muffler for dent.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before the three way catalyst (manifold).
Is exhaust gas leak detected?
YES >> Repair or replace error-detected parts.
NO >> GO TO 3.
3.CHECK INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Repair or replace error-detected parts.
NO >> GO TO 4.
4.CHECK IGNITION TIMING AND IDLE SPEED
Check the following items. Refer to EC-170, "Work Procedure"
.
For specification, refer to EC-541, "Ignition Timing"
For specification, refer to EC-541, "Idle Speed".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Follow the EC-170, "Work Procedure"
.
5.CHECK FUEL INJECTOR
Check the fuel injector. Refer to EC-505, "Component Function Check"
.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Perform EC-505, "Diagnosis Procedure"
.
6.CHECK FUNCTION OF IGNITION COIL-1
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Remove fuel pump fuse in IPDM E/R to release fuel pressure. NOTE:
Do not use CONSULT to release fuel pressure, or fuel pressure applies again during the following proce-
dure.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
6. Remove all ignition coil harness connectors to avoi d the electrical discharge from the ignition coils.
7. Remove ignition coil and spark plug of the cylinder to be checked.
PBIB1216E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0441 EVAP CONTROL SYSTEMEC-339
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM harness connector terminals as per the following.
*1: Except for California
*2: For California
6. Check EVAP control syst em pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1 minute.
8. Verify that EVAP control system pressure sensor va lue stays 0.1 V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-339, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462271
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
Is the inspection result normal?
YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO >> Replace EVAP canister. Refer to FL-14, "Removal and Installation"
.
2.CHECK PURGE FLOW
WITH CONSULT
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port.
2. Start engine and let it idle.
3. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4. Touch “Qd” and “Qu” on CONSULT screen to adj ust “PURG VOL CONT/V” opening and check vacuum
existence.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 4.
3.CHECK PURGE FLOW
WITHOUT CONSULT
1. Start engine and warm it up to normal operating temperature.
ECM
Connector +–
Terminal
E10
*1
E31*211 4 1 2 4
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Gear position Any position other than P, N or R
PURG VOL CONT/V Vacuum 100% Existed0% Not existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM