NISSAN TEANA 2014 Service Manual

P0172 FUEL INJECTION SYSTEM FUNCTIONEC-301
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Perform trouble diagnosis for “FUEL INJECTOR”, refer to EC-505, "Component Function Check"
.
8.CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Confirm that the engine is cooled down and t here are no fire hazards near the vehicle.
3. Disconnect all fuel injector harness connectors.
4. Remove fuel tube assembly. Refer to EM-41, "Removal and Installation"
.
Keep fuel hose and all fuel injectors connected to fuel tube.
5. Disconnect all ignition coil harness connectors.
6. Prepare pans or saucers under each fuel injector.
7. Crank engine for about 3 seconds.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent
Incident".
NO >> Replace fuel injectors from which fuel does not spray
out. Always replace O-ring with new ones. Refer to EM-
41, "Removal and Installation".
Clicking noise should be heard.
PBIB3332E
Fuel should be sprayed evenly
for each fuel injector.
PBIA9666J
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EC-302
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0181 FTT SENSOR
P0181 FTT SENSOR
DTC LogicINFOID:0000000009462238
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Is it necessary to erase permanent DTC?
YES >> GO TO 7.
NO >> GO TO 2.
2.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducting 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 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-1
1. Turn ignition switch ON and wait at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-304, "Diagnosis Procedure".
NO >> GO TO 4.
4.CHECK ENGINE COOLANT TEMPERATURE
With CONSULT
1. Select “COOLAN TEMP/S” in “DATA MONITOR” of “ENGINE” using CONSULT.
2. Check “COOLAN TEMP/S” value.
With GST
Follow the procedure “With CONSULT” above.
“
COOLAN TEMP/S” less than 60°C (140°F)?
YES >> INSPECTION END
NO >> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-2
With CONSULT
1. Cool engine down until “COOLAN TEMP/S” is less than 60 °C (140 °F).
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0181 FTT SENSOR
(Fuel temperature sensor ″A ″
circuit range/performance) A)
Rationally incorrect voltage from the
sensor is sent to ECM, compared with
the voltage signals from ECT sensor
and intake air temperature sensor. • Harness or connectors
(FTT sensor circuit is open or shorted)
• FTT sensor
• Combination meter
B) The comparison result of signals trans-
mitted to ECM from each temperature
sensor (IAT sensor, ECT sensor, EOT
sensor, and FTT sensor) shows that
the voltage signal of the FTT sensor is
higher/lower than that of other temper-
ature sensors when the engine is start-
ed with its cold state. • Harness or connectors
(High or low resistance in the FTT
sensor circuit)
• FTT sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0181 FTT SENSOREC-303
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2. Wait at least 10 seconds.
3. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-304, "Diagnosis Procedure".
NO >> GO TO 6.
6.PERFORM COMPONENT FUNCTION CHECK (FOR MALFUNCTION B)
Perform component function check. Refer to EC-303, "Component Function Check"
.
NOTE:
Use the component function check to check the overall func tion of the FTT sensor circuit. During this check, a
1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-304, "Diagnosis Procedure"
.
7.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducti ng 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, do not add fuel.
• Before performing the following procedure, check that fuel level is between 1/4 and 4/4.
• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
>> GO TO 8.
8.PERFORM DTC CONFIRMATION PROCEDURE B
1. Move the vehicle to a cool place. NOTE:
Cool the vehicle in an environment of ambient air temperature between −10 °C (14 °F) and 35 °C (95 °F).
2. Turn ignition switch OFF and leave the vehicle for 12 hours. CAUTION:
Never turn ignition switch ON during this procedure.
NOTE:
The vehicle must be cooled with the food open.
3. Start engine and let it idle for 5 minutes or more. CAUTION:
Never turn ignition swit ch OFF during idling.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-304, "Diagnosis Procedure".
NO >> INSPECTION END
Component Function CheckINFOID:0000000009462239
1.CHECK FUEL TANK TEM PERATURE (FTT) SENSOR
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Remove fuel level sensor unit. Refer to FL-6, "Removal and Installation"
.
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EC-304
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0181 FTT SENSOR
4. Check resistance between fuel level sensor unit and fuel pump
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Proceed to EC-304, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462240
1.INSPECTION START
Confirm the detected malfunc tion (A or B). Refer to EC-302, "DTC Logic"
.
Which malfunction is detected?
A>>GO TO 2.
B>>GO TO 6.
2.CHECK DTC WITH COMBINATION METER
Check DTC with combination meter. Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Proceed to MWI-61, "Component Function Check"
.
3.CHECK FUEL TANK TEMPERAT URE (FTT) SENSOR POWER
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel level sens or unit and fuel pump harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK FUEL TANK TEMPERATURE (F TT) SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel level sens or unit and fuel pump harness connector and ECM harness
connector.
Fuel level sensor unit
and fuel pump Condition Resistance (k Ω)
+ −
Te r m i n a l
3 1 Temperature [
°C
( ° F)] 20 (68) 2.3 – 2.7
50 (122) 0.79 – 0.90
JMBIA0167ZZ
+ −Voltag e
(Approx.)
Fuel level sensor unit and fuel pump
Connector Terminal B42 3 Ground 5 V
+-
Continuity
Fuel level sensor unit and
fuel pump ECM
Connector Terminal Connector Terminal
B42 3 E10
*1
E31*2125 Existed
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P0181 FTT SENSOREC-305
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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*1: Except for California
*2: For California
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
5.CHECK FTT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel level sens or unit and fuel pump harness connector and ECM harness
connector.
*1: Except for California
*2: For California
4. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK FUEL TANK TEM PERATURE (FTT) SENSOR
Check the FTT sensor. Refer to EC-305, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace fuel level sensor unit and fuel pump. Refer to FL-6, "Removal and Installation"
.
Component InspectionINFOID:0000000009462241
1.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Remove fuel level sensor unit. Refer to FL-6, "Removal and Installation"
.
4. Check resistance between fuel level sensor unit and fuel pump terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace fuel level sensor unit and fuel pump. Refer to FL-6, "Removal and Installation"
.
+-
Continuity
Fuel level sensor unit and
fuel pump ECM
Connector Terminal Connector Terminal
B42 1 E10
*1
E31*2124 Existed
Fuel level sensor unit
and fuel pump Condition Resistance (k Ω)
+ −
Te r m i n a l
31 Temperature
[ ° C ( °F)] 20 (68) 2.3 – 2.7
50 (122) 0.79 – 0.90
JMBIA0167ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-306
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0182, P0183
FTT SENSOR
P0182, P0183 FTT SENSOR
DTC LogicINFOID:0000000009462242
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting 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. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-306, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462243
1.CHECK DTC WITH COMBINATION METER
Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Proceed to MWI-61, "Component Function Check"
.
2.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel level sens or unit and fuel pump harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0182 FTT SEN/CIRCUIT
(Fuel temperature sensor
″ A ″ circuit low) An excessively low voltage from the sensor is
sent to ECM. • Harness or connectors
(The FTT sensor circuit is open or
shorted.)
• Fuel tank temperature sensor
• Combination meter
P0183 FTT SEN/CIRCUIT
(Fuel temperature sensor
″ A ″ circuit high) An excessively high voltage from the sensor is
sent to ECM.
+
−Vol tag e
(Approx.)
Fuel level sensor unit and fuel
pump
Connector Terminal B42 3 Ground 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0182, P0183 FTT SENSOREC-307
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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3.CHECK FUEL TANK TEMPERATURE (F
TT) SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel level sens or unit and fuel pump harness connector and ECM harness
connector.
*1: Except for California
*2: For California
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
4.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM connector.
3. Check the continuity between fuel level sens or unit and fuel pump harness connector and ECM harness
connector.
*1: Except for California
*2: For California
4. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK FUEL TANK TEM PERATURE (FTT) SENSOR
Check the FTT sensor. Refer to EC-307, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace “fuel level sensor unit and fuel pump”. Refer to FL-6, "Removal and Installation"
.
Component InspectionINFOID:0000000009462244
1.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Remove fuel level sensor unit. Refer to FL-6, "Removal and Installation"
.
+−
Continuity
Fuel level sensor unit and
fuel pump ECM
Connector Terminal Connector Terminal
B42 3 E10
*1
E31*2125 Existed
+
−
Continuity
Fuel level sensor unit and
fuel pump ECM
Connector Terminal Connector Terminal
B42 1 E10
*1
E31*2124 Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-308
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0182, P0183
FTT SENSOR
4. Check resistance between fuel level sensor unit and fuel pump
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace fuel level sensor unit and fuel pump. Refer to FL-6, "Removal and Installation"
.
Fuel level sensor unit
and fuel pump Condition Resistance (k Ω)
+ −
Te r m i n a l
31 Temperature
[ ° C ( °F)] 20 (68) 2.3 – 2.7
50 (122) 0.79 – 0.90
JMBIA0167ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0196 EOT SENSOREC-309
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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P0196 EOT SENSOR
DTC LogicINFOID:0000000009462245
DTC DETECTION LOGIC
NOTE:
If DTC P0196 is displayed with DTC P0197 or P0198, first perform the trouble diagnosis for DTC P0197 or
P0198. Refer to EC-312, "DTC Logic"
.
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Is it necessary to erase permanent DTC?
YES >> GO TO 6.
NO >> GO TO 2.
2.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducti ng 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 11 V or more at idle.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PR OCEDURE FOR MALFUNCTION A-1
1. Start engine and warm it up 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. Start engine and let it idle for 5 minutes and 10 seconds.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-311, "Diagnosis Procedure".
NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PR OCEDURE FOR MALFUNCTION A-2
With CONSULT
1. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Check that “COOLAN TEMP/S” indicates above 80 °C (176 °F).
If it is above 80 °C (176 °F), go to the following steps.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0196 EOT SENSOR
(Engine oil temperature sensor
range/performance) A)
Rationally incorrect voltage from the
sensor is sent to ECM, compared with
the voltage signals from EOT sensor
and intake air temperature sensor. • Harness or connectors
(EOT sensor circuit is open or short-
ed)
• EOT sensor
B) The comparison result of signals trans-
mitted to ECM from each temperature
sensor (IAT sensor, ECT sensor, FTT
sensor, and EOT sensor) shows that the
signal voltage of the EOT sensor is high-
er/lower than that of other temperature
sensors when the engine is started with
its cold state. • Harness or connectors
(High or low resistance in the EOT
sensor circuit)
• EOT sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-310
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0196 EOT SENSOR
If it is below 80
°C (176 °F), warm engine up until “COOLAN TEMP/S” indicates more than 80 °C (176 °F).
Then perform the following steps.
3. Turn ignition switch OFF and soak the vehicle in a cool place.
4. Turn ignition switch ON.
NOTE:
Do not turn ignition sw itch OFF until step 8.
5. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
6. Check the following.
If they are within the specified range, perform the following steps.
If they are out of the specified range, soak the v ehicle to meet the above conditions. Then perform the fol-
lowing steps.
NOTE:
• Do not turn ignition switch OFF.
• If it is supposed to need a long period of time, do not deplete the battery.
7. Start engine and let it idle for 5 minutes.
8. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-311, "Diagnosis Procedure".
NO >> GO TO 5.
5.PERFORM COMPONENT FUNCTION CHECK (FOR MALFUNCTION B)
Perform component function check. Refer to EC-311, "Component Function Check"
.
NOTE:
Use the component function check to check the overall func tion of the EOT sensor circuit. During this check, a
1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-311, "Diagnosis Procedure"
.
6.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducting 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, do not add fuel.
• Before performing the followin g procedure, check that fuel level is between 1/4 and 4/4.
• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
>> GO TO 7.
7.PERFORM DTC CONFIRMATION PROCEDURE B
1. Move the vehicle to a cool place. NOTE:
Cool the vehicle in an environment of ambient air temperature between −10 °C (14 °F) and 35 °C (95 °F).
2. Turn ignition switch OFF and leave the vehicle for 12 hours. CAUTION:
Never turn ignition switch ON during this procedure.
NOTE:
The vehicle must be cooled with the food open.
3. Start engine and let it idle for 5 minutes or more.
COOLAN TEMP/S Below 40 °C (104 °F)
INT/A TEMP SE Below 40 °C (104 °F)
Difference between “COOLAN TEMP/S ” and “INT/A TEMP SE” Within 6°C (11 °F)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM