2014 NISSAN TEANA fuel pump

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

EC-320
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0300, P0301,
P0302, P0303, P0304 MISFIRE
4.CHECK FUNCTION OF FUEL INJECTOR
1. Start engine and let engine idle.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Perform trouble diagnosis for FUEL INJECTOR. Refer
to EC-505, "Diagnosis Procedure"
.
5.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.
8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9. Connect spark plug and harness connector to ignition coil.
10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 - 0.66 in) between the edge of the spark plug and grounded metal
portion as shown in the figure.
11. Crank engine for about 3 seconds, and check whether spark is generated between the spark plug and the grounded metal por-
tion.
CAUTION:
• Do not approach to the spar k plug and the ignition coil
within 50 cm (19.7 in). Be car eful not to get an electrical
shock while checking, becau se the electrical discharge
voltage becomes 20 kV or more.
• It might cause to damage the igni tion coil if the gap of more than 17 mm (0.66 in) is taken.
NOTE:
When the gap is less than 13 mm (0.52 in), the sp ark might be generated even if the coil is mal-
functioning.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 6.
6.CHECK FUNCTION OF IGNITION COIL-2
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a known-good spark plug.
3. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded metal portion.
Is the inspection result normal?
Clicking noise should be heard.
PBIB3332E
Spark should be generated.
JMBIA0066GB
Spark should be generated.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0300, P0301, P0302, P0303, P0304 MISFIRE
EC-321
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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YES >> GO TO 7.
NO >> Check ignition coil, power transistor and their circuits. Refer to EC-511, "Diagnosis Procedure"
.
7.CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
Is the inspection result normal?
YES >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-111, "Standard and Limit"
.
NO >> Repair or clean spark plug. Then GO TO 8.
8.CHECK FUNCTION OF IGNITION COIL-3
1. Reconnect the initial spark plugs.
2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace spark plug(s) with standard type one(s). For spark plug type. Refer to EM-111, "Standard
and Limit".
9.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-26, "Compression pressure"
.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
10.CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero.
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-182, "Work Procedure"
.
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 11.
11 .DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging.
Is the inspection result normal?
YES >> Replace “fuel filter and fuel pump assembly”. Refer to FL-6, "Removal and Installation".
NO >> Repair or replace.
12.CHECK IGNITION TIMING
Check the following items.
For procedure, refer to EC-170, "Work Procedure"
.
For specification, refer to EC-541, "Ignition Timing"
.
Is the inspection result normal?
YES >> GO TO 13.
NO >> Follow the EC-170, "Work Procedure"
.
SEF156I
Spark should be generated.
At idling: Approximately 350 kPa (3.57 kg/cm
2, 51 psi)
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

P0461 FUEL LEVEL SENSOREC-377
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P0461 FUEL LEVEL SENSOR
DTC LogicINFOID:0000000009462298
DTC DETECTION LOGIC
NOTE:
• If DTC P0461 is displayed with DTC UXXXX, first perform the tr ouble diagnosis for DTC UXXXX.
• If DTC P0461 is displayed with DT C P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-404, "DTC Logic"
.
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-377, "Component Function Check"
.
Use component function check to check the overall func tion of the fuel level sensor function. During this
check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-378, "Diagnosis Procedure"
.
Component Function CheckINFOID:0000000009462299
1.PRECONDITIONING
WARNING:
When performing following procedure, be sure to observe the handling of the fuel. Refer to FL-2,
"General Precaution".
TESTING CONDITION:
Before starting component function check, preparation of draining fuel and refilling fuel is required.
Do you have CONSULT?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM COMPONENT FUNCTION CHECK
With CONSULT
NOTE:
Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/
8 Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to EC-182, "Work Procedure"
.
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “DATA MONI TOR” mode of “ENGINE” using CONSULT.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP RELAY” in “ACTIV E TEST” mode of “ENGINE” using CONSULT.
DTC No.CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0461 FUEL LEVEL SENSOR
(Fuel level sensor ″A ″ circuit
range/performance) The output signal of the fuel level sensor
does not change within the specified range
even though the vehicle has been driven a
long distance. • Harness or connectors
(The CAN communication line is open
or shorted)
• Harness or connectors (The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-420
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P117A AIR FUEL RATIO
Perform the following procedure in a place with
no combustible objects and good ventilation.
1. Turn ignition switch OFF.
2. Confirm that the engine is cooled down and there 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 approximately 3 seconds.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace fuel injector. Refer to EM-41, "Removal and
Installation".
7.CHECK FUNCTION OF IGNITION COIL-1
CAUTION:
Perform the following steps in a well -ventilated area with no combustibles.
1. Turn ignition switch OFF.
2. Remove fuel pump fuse from IPDM E/R to release fuel pressure.
NOTE:
CONSULT must not be used to release fuel pressu re. It develops again during the following steps,
if released by using CONSULT.
3. Start the engine.
4. After an engine stall, crank the engine two or three times to release all the fuel pressure.
5. Turn ignition switch OFF.
6. Disconnect all the harness connectors of ignition coil to prevent electric discharge from occurring in igni-
tion coil.
7. Remove ignition coil assembly and spark plug of cylinder. Refer to EM-40, "Removal and Installation"
.
8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9. Connect spark plug and harness connector to ignition coil.
10. Allow a 13-17mm (0.52-0.66 in) spacing between spark plug and
grounded metal portion as shown in the figure to fix the ignition
coil with a rope or an equivalent.
11. Crank the engine for approximately 3 seconds to see if sparking occurs between spark plug and the grounded metal portion.
CAUTION:
• The discharge voltage becomes 20 kV or higher. There- fore, always stay away from the spark plug and ignition
coil at least 50 cm (19.7 in) during the inspection.
• Leaving a space of more than 17mm (0.66 in) may damage the ignition coil.
NOTE:
When the gap is less than 13 mm (0.52 in), a the sp ark might be generated even if the coil is mal-
functioning.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 10.
8.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-26, "Compression pressure"
.
Is the inspection result normal?
• Fuel should be sprayed evenly for each fuel injector.
• Fuel must not drip from the tip of fuel injector.
PBIA9666J
Spark should be generated.
JMBIA0066GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P117A AIR FUEL RATIOEC-421
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YES >> Check intermittent incident. Refer to
GI-43, "Intermittent Incident".
NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
9.DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging.
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.
10.CHECK FUNCTION OF IGNITION COIL-2
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a non-malfunctioning spark plug.
3. Crank engine for approximately 3 seconds, and rec heck whether spark is generated between the spark
plug and the grounded metal portion.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Check ignition coil, power trans istor and their circuits. Refer to EC-511, "Component Function
Check".
11 .CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
Is the inspection result normal?
YES >> 1. Repair or clean spark plug. Refer to EM-16,
"Removal and Installation".
2. GO TO 12.
NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-111, "Standard and Limit"
.
12.CHECK FUNCTION OF IGNITION COIL-3
1. Reconnect the initial spark plugs.
2. Crank engine for approximately 3 seconds, and rec heck whether spark is generated between the spark
plug and the grounded portion.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-111, "Standard
and Limit".
Spark should be generated.
SEF156I
Spark should be generated.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM