2014 NISSAN TEANA fuel pump

ENGINE CONTROL SYSTEMEC-531
< SYMPTOM DIAGNOSIS > [QR25DE]
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1 - 6: The numbers refer to the order of inspection. Va l v e
mecha-
nism Timing chain
55555 55 5 EM-62
Camshaft
EM-47
Intake valve timing controlEM-62
Intake valve
3EM-78
Exhaust valve
Exhaust Exhaust manifold/Tube/Muf- fler/Gasket 55555 55 5 EM-33
, EX-6
Three way catalyst
Lubrica-
tion Oil pan/Oil strainer/Oil pump/
Oil filter/Oil gallery/Oil cooler 55555 55 5 EM-36
,
LU-9,
LU-11
, LU-7,
LU-17
Oil level (Low)/Filthy oil LU-9
Cooling Radiator/Hose/Radiator filler
cap
55555 55 45 CO-17
Thermostat 5
CO-22
Water pumpCO-20
Water galleryCO-7
Cooling fan
5CO-18
Coolant level (Low)/Contami-
nated coolant CO-11
NVIS (NISSAN Vehicle Immobilizer Sys-
tem — NATS) 11
SEC-63
SYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code A AAB AC AD AE AF AG AH AJ AK AL AM HA
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PRECAUTIONSEC-545
< PRECAUTION > [VQ35DE]
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•
B1 indicates bank 1, B2 indicates bank 2 as shown in the fig-
ure.
• Never operate fuel pump when there is no fuel in lines.
• Tighten fuel hose clamps to the specified torque.
• Never depress accelerator pedal when starting.
• Immediately after starting, n ever rev up engine unnecessarily.
• Never rev up engine just prior to shutdown.
• When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
- Keep the antenna as far as possible from the electronic con-
trol units.
- Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Never let them run parallel for a long distance.
- Adjust the antenna and feeder line so that the standing-wave
ratio can be kept smaller.
- Be sure to ground the radio to vehicle body.
SEC893C
SEF709Y
SEF708Y
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

COMPONENT PARTSEC-551
< SYSTEM DESCRIPTION > [VQ35DE]
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A. Instrument panel
periphery (driver
side) B. Pedal periphery C. Inside fuel tank periphery
D. Behind fuel tank periphery :Vehicle front
No. Component Function
1. Combination meter Malfunction indicator lamp (MIL)
EC-560, "Malfunction Indicator lamp (MIL)"
Information displayThe operation mode of the ASCD is indicated on the information
display in the combination meter.
ECM transmits the status signal to the combination meter via CAN
communication according to ASCD operation.
2. ASCD steering switch EC-553, "ASCD Steering Switch"
3. Stop lamp switchEC-562, "Stop Lamp Switch & Brake Pedal Position Switch"
4. Brake pedal position switch EC-562, "Stop Lamp Switch & Brake Pedal Position Switch"
5. Accelerator pedal position sensor EC-552, "Accelerator Pedal Position Sensor"
6. Fuel level sensor unit and fuel pumpEC-558, "Fuel Level Sensor Unit and Fuel Pump (With Fuel Tank Temperature Sensor)"
7. Fuel tank temperature sensorEC-558, "Fuel Level Sensor Unit and Fuel Pump (With Fuel Tank Temperature Sensor)"
ALBIA0806ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-558
< SYSTEM DESCRIPTION >[VQ35DE]
COMPONENT PARTS
EVAP Canister Vent Control Valve
INFOID:0000000009462496
The EVAP canister vent control valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.
EVAP Control System Pressure SensorINFOID:0000000009462497
The EVAP control system pressure s ensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases.
Fuel InjectorINFOID:0000000009462498
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Fuel Level Sensor Unit and Fuel Pump (With Fuel Tank Temperature Sensor)
INFOID:0000000009462499
FUEL PUMP
The ECM activates the fuel pump for 1 second after the ignition
switch is turned ON to improve engine start ability. If the ECM
receives a engine speed signal from the camshaft position sensor
(PHASE), it knows that the engine is rotating, and causes the pump
to operate. If the engine speed signal is not received when the igni-
tion switch is ON, the engine stalls. The ECM stops pump operation
and prevents battery discharging, thereby improving safety. The
ECM does not directly drive the fuel pump. It sends the control signal
to the fuel pump control module, which in turn controls the fuel
pump.
JSBIA1337GB
PBIB3370E
PBIA9664J
JSBIA1282ZZ
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COMPONENT PARTSEC-559
< SYSTEM DESCRIPTION > [VQ35DE]
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FUEL LEVEL SENSOR
The fuel level sensor is mounted in the fuel level sensor unit.
The sensor detects a fuel level in the fuel tank and tr ansmits a signal to the combination meter. The combina-
tion meter sends the fuel level sensor signal to the ECM via the CAN communication line.
It consists of two parts, one is mechanical float and the ot her is variable resistor. Fuel level sensor output volt-
age changes depending on the movement of the fuel mechanical float.
FUEL TANK TEMPERATURE SENSOR
The fuel tank temperature sensor is used to detect the fuel tempera-
ture inside the fuel tank. The sensor modifies a voltage signal from
the ECM. The modified signal returns to the ECM as the fuel temper-
ature input. The sensor uses a ther mistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.

*: These data are reference values and are measured between ECM terminals 95 (Fuel tank temperature sensor) and ground.
Heated Oxygen Sensor 2INFOID:0000000009462500
DESCRIPTION
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air fuel ratio is c ontrolled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1 V in richer conditions to 0 V in leaner con-
ditions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
HEATED OXYGEN SENSOR 2 HEATER
Heated oxygen sensor 2 heater is integrated in the sensor.
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
Fluid temperature
[° C ( °F)] Voltage*
(V) Resistance
(kΩ)
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
SEF012P
SEF327R
Engine speed Heated oxygen sensor 2 heater
Above 3,600 rpm OFF
Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load ON
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EC-564
< SYSTEM DESCRIPTION >[VQ35DE]
STRUCTURE AND OPERATION
On Board Refueling V apor Recovery (ORVR)
INFOID:0000000009462512
From the beginning of refueling, the air and vapor insi de the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is
released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” sign in workshop.
• Never smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Always to furnish the workshop with a CO
2 fire extinguisher.
CAUTION:
• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-pr oof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-687, "Work Procedure"
.
- Disconnect battery ground cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Never kink or twist hose and tube when they are installed.
• Never tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine and check for fuel leakage at connections.
• Never attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, r esulting in fuel spray and possibly a fire.
PBIB1068E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

DIAGNOSIS SYSTEM (ECM)EC-605
< SYSTEM DESCRIPTION > [VQ35DE]
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INT/V TIM (B1)
°CA Indicates [
°CA] of intake camshaft
advance angle.
INT/V TIM (B2)
INT/V SOL(B1)
% • The control value of the intake
valve timing control solenoid valve
(determined by ECM according to
the input signals) is indicated.
• The advance angle becomes larg-
er as the value increases.
INT/V SOL(B2)
VIAS S/V-1 On/Off The control condition of the VIAS
control solenoid valve 1 (determined
by ECM according to the input sig-
nals) is indicated.
• On: VIAS control solenoid valve 1 is operating.
• Off: VIAS control solenoid valve 1 is not operating.
VIAS S/V-2 On/Off The control condition of the VIAS
control solenoid valve 2 (determined
by ECM according to the input sig-
nals) is indicated.
• On: VIAS control solenoid valve 2
is operating.
• Off: VIAS control solenoid valve 2 is not operating.
AIR COND RLY On/Off The air conditioner
relay control con-
dition (determined by ECM accord-
ing to the input signals) is indicated.
ENGINE MOUNT IDLE/
TRVL The control condition of the electron-
ic controlled engine mount (deter-
mined by ECM according to the
input signals) is indicated.
• IDLE: Engine speed is below 950
rpm
• TRVL: Engine speed is above 950 rpm
FUEL PUMP RLY On/Off Indicates the fuel pump relay control
condition determined by ECM ac-
cording to the input signals.
VENT CONT/V On/Off The control condition of the EVAP
canister vent control valve (deter-
mined by ECM according to the in-
put signals) is indicated.
• On: Closed
• Off: Open
THRTL RELAY On/Off Indicates the throttle control motor
relay control condition determined
by the ECM according to the input
signals.
A/F S1 HTR(B1)
% • Air fuel ratio (A/F) sensor 1 heater
control value computed by ECM
according to the input signals.
• The current flow to the heater be-
comes larger as the value increas-
es.
A/F S1 HTR(B2) Monitored item Unit
Monitor Item Selec-
tion
Description Remarks
ECU IN-
PUT SIG- NALS MAIN-
SIG-
NALS
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DIAGNOSIS SYSTEM (ECM)EC-611
< SYSTEM DESCRIPTION > [VQ35DE]
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*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.
DTC WORK SUPPORT MODE
Test Item
FUEL PUMP RE-
LAY • Ignition switch: ON (Engine
stopped)
• Turn the fuel pump relay “ON” and “OFF” using CONSULT and
listen to operating sound. Fuel pump relay makes the operat-
ing sound. • Harness and connectors
• Fuel pump relay
VIAS S/V-1 • Ignition switch: ON
• Turn solenoid valve “ON” and “OFF” using CONSULT and listen
to operating sound. Solenoid valve makes the operating
sound. • Harness and connectors
• Solenoid valve
ENGINE
MOUNTING • Ignition switch: ON
• Turn electronic controlled engine mount “IDLE” and “TRVL” with
CONSULT. Electronic controlled engine mount
makes the operating sound. • Harness and connectors
• Electronic controlled engine mount
VIAS S/V-2 • Ignition switch: ON
• Turn solenoid valve “ON” and “OFF” using CONSULT and listen
to operating sound. Solenoid valve makes the operating
sound. • Harness and connectors
• Solenoid valve
IGNITION TIM-
ING • Engine: Return to the original
non-standard condition
• Timing light: Set
• Retard the ignition timing using
CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. Perform Idle Air Volume Learning.
POWER BAL-
ANCE • Engine: After warming up, idle the
engine.
• A/C switch OFF
• Selector lever: P or N position
• Cut off each injector signal one at a time using CONSULT. Engine runs rough or stops. • Harness and connectors
• Compression
• Fuel injector
• Power transistor
•Spark plug
• Ignition coil
VENT CON-
TROL/V • Ignition switch: ON (Engine
stopped)
• Turn solenoid valve “ON” and “OFF” with the CONSULT and lis-
ten to operating sound. Solenoid valve makes an operating
sound. • Harness and connectors
• Solenoid valve
V/T ASSIGN AN-
GLE • Engine: Return to the original
non-standard condition
• Change intake valve timing using
CONSULT. If malfunctioning symptom disap-
pears, see CHECK ITEM. • Harness and connectors
• Intake valve timing control sole- noid valve
COOLING FAN* • Ignition switch: ON
• Turn the cooling fan “HI”, “MID”, “LOW” and “OFF” using CON-
SULT. Cooling fan moves and stops.
• Harness and connectors
• Cooling fan motor
•IPDM E/R
TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY)
Test mode Test item Corresponding DTC No. Reference page
A/F SEN1 A/F SEN1(B1) P1276 P0130
EC-753
A/F SEN1(B2) P1286 P0150EC-753
EVAPORATIVE SYSTEMPURG FLOW P0441 P0441
EC-828PURG VOL CN/V P1444 P0443EC-833
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM