2016 NISSAN NOTE engine

EC-36
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
*1: M/T models
*2: CVT models
*3: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*4: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
Firing order: 1 - 3 - 4 - 2
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the
engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor signal. Comput-
ing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is re vised by the ECM according to the other data stored in
the ECM.
• At starting
• During warm-up
• At idle
• At low battery voltage
• During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the \
knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
AIR CONDITIONING CUT CONTROL
SensorInput signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed
*3
Piston position
Ignition timing control Ignition coil (with power transistor)
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch
*1
PNP signal
Transmission range switch*2
Battery Battery voltage*3
Knock sensorEngine knocking
Combination meter Vehicle speed
*4
Revision: August 2015 2016 Versa Note

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SYSTEMEC-37
< SYSTEM DESCRIPTION > [HR16DE]
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AIR CONDITIONING CUT CONTROL : System DiagramINFOID:0000000012431313
AIR CONDITIONING CUT CONTROL : System DescriptionINFOID:0000000012431314
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.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.
JSBIA0320GB
Sensor Input signal to ECM ECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
*1
Piston position
A/C compressor request
signalIPDM E/R
↓
Air conditioner relay
↓
Compressor
Engine coolant temperature sensor Engine coolant temperature
Accelerator pedal position sensor Accelerator pedal position
Battery
Battery voltage
*1
Refrigerant pressure sensor Refrigerant pressure
EPS control unit EPS operation signal
*2
Combination meterVehicle speed signal*2
BCMA/C ON signal*2
Blower fan signal*2
Revision: August 2015
2016 Versa Note

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EC-38
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
CAN COMMUNICATION
CAN COMMUNICATION : System DescriptionINFOID:0000000012431315
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s
peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-30, "
CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart", about CAN com-
munication for detail.
COOLING FAN CONTROL
COOLING FAN CONTROL : System DiagramINFOID:0000000012431316
COOLING FAN CONTROL : System DescriptionINFOID:0000000012431317
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
SYSTEM DESCRIPTION (CVT MODELS)
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then contro l system has 3-step control [HIGH/LOW/OFF].
JSBIA0321GB
SensorInput signal to ECM ECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed
*1
Piston position
Cooling fan speed request
signalIPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor
Refrigerant pressure
Battery Battery voltage
*1
Combination meterVehicle speed*2
BCMA/C ON signal*2
Blower fan signal*2
Revision: August 2015
2016 Versa Note

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SYSTEMEC-39
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Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
SYSTEM DESCRIPTION (M/T MODELS)
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then contro
l system has 2-step control [HIGH/OFF].
Cooling Fan Operation
Cooling Fan Relay Operation
The ECM controls cooling fan relays through CAN communication line.
PBIB2483E
Cooling fan speed Cooling fan relay
123
Stop (OFF) OFFOFF OFF
Low (LOW) ONOFF OFF
High (HI) ONON ON
JSBIA1323GB
Cooling fan speed Cooling fan relay
Stop (OFF) OFF
Operate (HI) ON
Revision: August 20152016 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
Revision: August 2015 2016 Versa Note

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SYSTEMEC-41
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SYSTEM DESCRIPTION
The evaporative emission system is used to reduce hydr
ocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accompli shed by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not oper ating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve al so shuts off the vapor purge line during decelerating.
INTAKE VALVE TIMING CONTROL
INTAKE VALVE TIMING CONTROL : System DiagramINFOID:0000000012431320
INTAKE VALVE TIMING CONT ROL : System DescriptionINFOID:0000000012431321
INPUT/OUTPUT SIGNAL CHART
PBIB3639E
JPBIA4760GB
Sensor Input signal to ECMECM functionActuator
Crankshaft position sensor (POS) Engine speed
*1
Piston position
Intake valve timing
controlIntake valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor
Engine oil temperature
Engine coolant temperature sensor Engine coolant temperature
Combination meter Vehicle speed
*2
Revision: August 2015 2016 Versa Note

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EC-42
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
*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.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases c ontinuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, engine oil tempera-
ture and engine coolant temperature. Then, the ECM s ends ON/OFF pulse duty signals to the intake valve
timing (IVT) control solenoid valve depending on driving stat us. This makes it possible to control the shut/open
timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.
EXHAUST VALVE TIMING CONTROL
EXHAUST VALVE TIMING CO NTROL : System DiagramINFOID:0000000012431322
EXHAUST VALVE TIMING CONT ROL : System DescriptionINFOID:0000000012431323
INPUT/OUTPUT SIGNAL CHART
JPBIA4884GB
JPBIA4885GB
SensorInput signal to ECM ECM functionActuator
Crankshaft position sensor (POS) Engine speed
*1
Piston position
Exhaust valve timing controlExhaust valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor Engine oil temperature
Engine coolant temperature sensor Engine coolant temperature
Combination meter
Vehicle speed
*2
Revision: August 2015 2016 Versa Note

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SYSTEMEC-43
< SYSTEM DESCRIPTION > [HR16DE]
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*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.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the exhaust
valve.
The ECM receives signals such as crankshaft positi on, camshaft position, engine speed, engine oil tempera-
ture and engine coolant temperature. Then, the ECM s ends ON/OFF pulse duty signals to the exhaust valve
timing (EVT) control solenoid valve depending on driving stat us. This makes it possible to control the shut/
open timing of the exhaust valve to increase engi ne torque and output in a range of high engine speed.
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Dia-
gram
INFOID:0000000012431324
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
scription
INFOID:0000000012431325
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pres-
sure by the oil pressure warning lamp a before the engine becomes damaged.
• When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits an oil pressure warning lamp signal to the combination meter. The combination meter turns ON the oil pres-
sure warning lamp, according to the signal.
JPBIA4886GB
JSBIA0704GB
Sensor Input signal to ECM ECM function Actuator
Engine oil pressure sensor Engine pressure Engine protection control
• Oil pressure warning lamp signalCombination meter
• Oil pressure warning lamp
Crankshaft position sensor (POS) Engine speed
Revision: August 2015 2016 Versa Note

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