Nissan Versa Note. Instruction — part 262
EC-30
< SYSTEM DESCRIPTION >
[HR16DE]
SYSTEM
SYSTEM
ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM : System Diagram
INFOID:0000000009020607
JPBIA5483GB
SYSTEM
EC-31
< SYSTEM DESCRIPTION >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ENGINE CONTROL SYSTEM : System Description
INFOID:0000000009020608
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 control
EC-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 system
EC-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 CONTROL : 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 system
EC-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 system
EXT-11, "ACTIVE GRILLE SHUTTER SYSTEM : System Descrip-
tion"
EC-32
< SYSTEM DESCRIPTION >
[HR16DE]
SYSTEM
MULTIPORT FUEL INJECTION SYSTEM : System Diagram
INFOID:0000000009020609
MULTIPORT FUEL INJECTION SYSTEM : System Description
INFOID:0000000009020610
INPUT/OUTPUT SIGNAL CHART
JPBIA4882GB
SYSTEM
EC-33
< SYSTEM DESCRIPTION >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
*1: M/T models
*2: CVT models
*3: This sensor is not used to control the engine system under normal conditions.
*4: ECM determines the start signal status by the signals of engine speed and battery voltage.
*5: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from the crankshaft position sensor, camshaft position sen-
sor and the mass air flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.
<Fuel increase>
• During warm-up
• When starting the engine
• During acceleration
• Hot-engine operation
• When selector lever position is changed from N to D (CVT models)
• High-load, high-speed operation
<Fuel decrease>
• During deceleration
• During high engine speed operation
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed
*4
Piston position
Fuel injection & mixture
ratio control
Fuel injector
Camshaft position sensor (PHASE)
Mass air flow sensor
Amount of intake air
Intake air temperature sensor
Intake air temperature
Engine coolant temperature sensor
Engine coolant temperature
Air fuel ratio (A/F) sensor 1
Density of oxygen in exhaust gas
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
*4
Knock sensor
Engine knocking condition
Heated oxygen sensor 2
*3
Density of oxygen in exhaust gas
EPS control unit
EPS operation signal
*5
Combination meter
Vehicle speed
*5
BCM
A/C ON signal
*5
Blower fan signal
*5
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