2016 NISSAN NOTE fuel pressure

EC-22
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS

*: These data are reference values and are measured between ECM terminals.
EVAP Canister Purge Volume Control Solenoid ValveINFOID:0000000012431283
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
EVAP Canister Vent Control ValveINFOID:0000000012431284
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:0000000012431285
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.
Engine oil temperature [ °C ( °F)]
Vo l ta g e* (V)Resistance (k
Ω)
–10 (14) 4.4 7.0 - 11.4 20 (68) 3.52.10 - 2.90
50 (122) 2.20.68 - 1.00
90 (194) 0.90.236 - 0.260
110 (230) 0.60.143 - 0.153
SEF012P
JSBIA0651ZZ
PBIB1263E
PBIB3370E
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COMPONENT PARTSEC-23
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Exhaust Valve Timing Control Solenoid ValveINFOID:0000000012431286
Exhaust valve timing control solenoi
d valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The exhaust valve timing control solenoid valve changes the oil
amount and direction of flow through exhaust valve timing control
unit or stops oil flow.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the exhaust valve angle at the control
position.
Fuel InjectorINFOID:0000000012431287
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 PumpINFOID:0000000012431288
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for a few seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engi ne is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition s witch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The EC M does not directly drive the fuel
pump. It controls the ON/OFF fuel pump rela y, which in turn controls the fuel pump.
JSBIA0652ZZ
JSBIA0742ZZ
SensorInput signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
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 .
Revision: August 20152016 Versa Note

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COMPONENT PARTSEC-25
< SYSTEM DESCRIPTION > [HR16DE]
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*: These data are reference values and are measured between ECM terminals.
Intake Valve Timing Control Solenoid ValveINFOID:0000000012431293
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Knock SensorINFOID:0000000012431294
The knock sensor is attached to t
he cylinder block. It senses engine
knocking using a piezoelectric el ement. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
Battery Current Sensor (With Battery Temperature Sensor)INFOID:0000000012431295
OUTLINE
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator.
Based on sensor signals, ECM judges whether or not the power
generation voltage variable contro l is performed. When performing
the power generation voltage variable control, ECM calculates the
target power generation voltage based on the sensor signal. And
ECM sends the calculated value as the power generation command
value to IPDM E/R. For the details of the power generation voltage
variable control, refer to CHG-8, "
System Description".
CAUTION:
Never connect the electrical co mponent or the ground wire
directly to the battery terminal. The connection cau ses the malfunction of the power generation volt-
age variable control, and then the battery discharge may occur.
BATTERY CURRENT SENSOR
The battery current sensor is installed to the battery negative cable. The sensor measures the charging/dis-
charging current of the battery.
Intake air temperature [ °C ( °F)] Voltage* (V) Resistance (k Ω)
25 (77) 3.31.800 - 2.200
80 (176) 1.20.283 - 0.359
SEF012P
PBIB1842E
JSBIA0284ZZ
JPBIA3262ZZ
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STRUCTURE AND OPERATIONEC-29
< SYSTEM DESCRIPTION > [HR16DE]
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On Board Refueling Vapor Recovery (ORVR)INFOID:0000000012431306
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 v apor 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 inspectio ns below, be sure to observe the following:
• Put a “CAUTION: FLAMMABL E” sign in workshop.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
• Be sure 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-proof containe r and put lid on securely.
- Release fuel pressure from fuel line. Refer to EC-137, "
Work Procedure".
- Disconnect battery ground cable.
• Always replace O-ring when the fu el gauge retainer is removed.
• Do not kink or twist hose and tube when they are installed.
• Do not tighten hose and clamps excessively to avoid damaging hoses.
• After installation, run engine and check for fuel leaks at connection.
• Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.
JMBIA1930GB
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SYSTEMEC-31
< SYSTEM DESCRIPTION > [HR16DE]
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ENGINE CONTROL SYSTEM : System DescriptionINFOID:0000000012431308
ECM performs various controls such as fuel
injection control and ignition timing control.
MULTIPORT FUEL INJECTION SYSTEM
Function Reference
Multiport fuel injection system EC-32, "
MULTIPORT FUEL INJECTION SYSTEM : System De-
scription"
Electric ignition system
EC-35, "ELECTRIC IGNITION SYSTEM : System Description"
Air conditioning cut controlEC-37, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"
CAN communication
EC-38, "CAN COMMUNICATION : System Description"
Cooling fan control EC-38, "COOLING FAN CONTROL : System Description"
Evaporative emission systemEC-40, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"
Intake valve timing control
EC-41, "INTAKE VALVE TIMING CONTROL : System Description"
Exhaust valve timing control EC-42, "EXHAUST VALVE TIMING CO
NTROL : System Descrip-
tion"
Engine protection control at low engine oil pressure EC-43, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"
Fuel filler cap warning systemEC-44, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"
Automatic speed control device (ASCD)
EC-45, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"
Active grille shutter systemEXT-11, "ACTIVE GRILLE SHUTTER SYSTEM : System Descrip-
tion"
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2016 Versa Note

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EC-40
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM : System DiagramINFOID:0000000012431318
EVAPORATIVE EMISSION SYSTEM : System DescriptionINFOID:0000000012431319
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
JPBIA4896GB
Sensor Input signal to ECM ECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
Piston position
EVAP canister purge
flow controlEVAP canister purge volume
control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
1
Fuel tank temperature sensor Fuel temperature in fuel tank
EVAP control system pressure sensor Pressure in purge line
Combination meter Vehicle speed*
2
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EC-44
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.
FUEL FILLER CAP WARNING SYSTEM
FUEL FILLER CAP WARNING
SYSTEM : System DiagramINFOID:0000000012431326
FUEL FILLER CAP WARNING SYS TEM : System DescriptionINFOID:0000000012431327
INPUT/OUTPUT SIGNAL CHART
Input
*: This signal is sent to the ECM via the CAN communication line.
Output
*: This signal is sent to the combination meter via the CAN communication line.
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and
malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination
meter.
ECM judges a refueled state, based on a fuel level signal transmitted from the combination meter.
When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled
state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter
via CAN communication.
When receiving the signal, the combination meter turns ON the fuel filler cap warning display.
CAUTION:
Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.
Reset Operation
Decrease in engine
oil pressure Engine speed Combination meter
Oil pressure warning lamp
Detection Less than 1,000 rpm
ON*
1,000 rpm or more ON
Unit/Sensor Input signal to ECM ECM function
EVAP control system pressure sensor Pressure in purge line
Fuel filler cap warning control
Combination meter Fuel level
Fuel filler cap warning reset signal
*
JSBIA0797GB
Unit
Output signal Actuator
ECM Fuel filler cap warning display signal
*Combination meter
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DIAGNOSIS SYSTEM (ECM)EC-65
< SYSTEM DESCRIPTION > [HR16DE]
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CRUISE LAMP ON/OFF
Indicates [ON/OFF] cond
ition of CRUISE lamp de-
termined by the ECM according to the input signals.
SET LAMP* ON/OFFIndicates [ON/OFF] condition of SET lamp deter-
mined by the ECM according to the input signals.
ALT DUTY %Indicates the duty ratio of the power generation
command value. The ratio is calculated by ECM
based on the battery current sensor signal.
BAT CUR SEN mVThe signal voltage of battery current sensor is dis-
played.
A/F ADJ-B1 —Indicates the correction of a factor stored in ECM.
The factor is calculated from the difference between
the target air-fuel ratio stored in ECM and the air-
fuel ratio calculated from A/F sensor 1 signal.
P/N POSI SW ON/OFFIndicates [ON/OFF] condition from the park/neutral
position (PNP) signal.
INT/A TEMP SE °C or ° F The intake air temperature (determined by the sig-
nal voltage of the intake air temperature sensor) is
indicated.
AC PRESS SEN VThe signal voltage from the refrigerant pressure
sensor is displayed.
CLUTCH P/P SW ON/OFF Indicates [ON/OFF] condition clutch pedal position
switch signals. Models other than M/T models always
display OFF.
VTC DTY EX B1 %• The control value of the exhaust valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.
• The advance angle becomes larger as the value
increases.
THRTL STK CNT
B1* ——
EVAP LEAK DIAG YET/CMPLT • Indicates the condition of EVAP leak diagnosis.
YET: EVAP leak diagnosis has not been per-
formed yet.
CMPLT: EVAP leak diagnosis has been per-
formed successfully.
EVAP DIAG READY ON/OFF • Indicates the ready condition of EVAP leak diag-
nosis.
ON: Diagnosis has been ready condition.
OFF: Diagnosis has not been ready condition.
A/F SEN1
DIAG1(B1) INCMP/CM-
PLT • Indicates DTC P015A or P015B self-diagnosis
condition.
- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.
A/F SEN1
DIAG2(B1) INCMP/CM-
PLT • Indicates DTC P014C or P014D self-diagnosis
condition.
- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.
A/F SEN1
DIAG3(B1) ABSNT/
PRSNT • Indicates DTC P014C, P014D, P015A or P015B
self-diagnosis condition.
- ABSNT: The vehicle condition is not within the di- agnosis range.
- PRSNT: The vehicle condition is within the diag-
nosis range.
HO2 S2 DIAG2(B1) INCMP/CM-
PLT • Indicates DTC P0139 self-diagnosis (slow re-
sponse) condition.
- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.
EOP SENSOR mV The signal voltage of EOP sensor is displayed.
Monitored item Unit
DescriptionRemarks
Revision: August 2015 2016 Versa Note

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