Nissan Versa Note. Manual - part 262

 

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Nissan Versa Note. Manual - 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 >

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ENGINE CONTROL SYSTEM : System Description

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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 >

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SYSTEM

MULTIPORT FUEL INJECTION SYSTEM : System Diagram

INFOID:0000000009020609

MULTIPORT FUEL INJECTION SYSTEM : System Description

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INPUT/OUTPUT SIGNAL CHART

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SYSTEM

EC-33

< SYSTEM DESCRIPTION >

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*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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