Nissan Juke F15. Manual — part 309

SYSTEM

EC-49

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

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SYSTEM

ENGINE CONTROL SYSTEM
ENGINE CONTROL SYSTEM : System Diagram

INFOID:0000000012197664

ENGINE CONTROL SYSTEM : System Description

INFOID:0000000012197665

ECM controls the engine by various functions.

JPBIA5480GB

EC-50

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

SYSTEM

DIRECT INJECTION GASOLINE SYSTEM

Function

Reference

Direct injection gasoline system

EC-51, "DIRECT INJECTION GASOLINE SYSTEM : System De-
scription"

Fuel pressure control

EC-54, "FUEL PRESSURE CONTROL : System Description"

Electric ignition control

EC-56, "ELECTRIC IGNITION SYSTEM : System Description"

Intake valve timing control

EC-57, "INTAKE VALVE TIMING CONTROL : System Description"

Exhaust valve timing control

EC-58, "EXHAUST VALVE TIMING CONTROL : System Descrip-
tion"

Turbocharger boost control

EC-60, "TURBOCHARGER BOOST CONTROL : System Descrip-
tion"

Engine protection control (Low engine oil pressure)

EC-61, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"

Fuel filler cap warning system

EC-62, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"

Air conditioning cut control

EC-63, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"

Cooling fan control

EC-65, "COOLING FAN CONTROL : System Description"

Starter motor drive control

EC-65, "STARTER MOTOR DRIVE CONTROL : System Descrip-
tion"

Evaporative emission system

EC-66, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"

ASCD (Automatic speed control device)

EC-68, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"

Integrated control system

EC-69, "INTEGRATED CONTROL SYSTEM : System Descrip-
tion"

CAN communication

EC-70, "CAN COMMUNICATION : System Description"

SYSTEM

EC-51

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

DIRECT INJECTION GASOLINE SYSTEM : System Diagram

INFOID:0000000012197666

DIRECT INJECTION GASOLINE SYSTEM : System Description

INFOID:0000000012197667

INPUT/OUTPUT SIGNAL CHART

JPBIA5479GB

EC-52

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

SYSTEM

*1: This sensor is not used to control the engine system under normal conditions.
*2: CVT models
*3: M/T models
*4: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

The adoption of the direct fuel injection method enables more accurate adjustment of fuel injection quantity by

injecting atomized high-pressure fuel directly into the cylinder. This method allows high-powered engine, low

fuel consumption, and emissions-reduction.

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, intake air, fuel rail pressure and boost) from the crankshaft position sensor,

camshaft position sensor, mass air flow sensor, fuel rail pressure sensor and the turbocharger boost 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 func-

tion

Actuator

Crankshaft position sensor (POS)

Engine speed

*4

Fuel injection
& mixture ra-
tio control

Fuel injector

Camshaft position sensor (PHASE)

Camshaft position

Mass air flow sensor

Amount of intake air

Intake air temperature sensor 1

Intake air temperature

Engine coolant temperature sensor

Engine coolant temperature

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas

Fuel rail pressure sensor

Fuel rail pressure

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Battery

Battery voltage

*4

Knock sensor

Engine knocking condition

Heated oxygen sensor 2

*1

Density of oxygen in exhaust gas

Transmission range switch

*2

Gear position

Park/neutral position (PNP) switch

*3

G sensor

Inclination angle

Turbocharger boost sensor

Turbocharger boost

ABS actuator and electric unit (control unit)

CAN commu-
nication

• Wheel speed signal
• VDC/TCS operation command

BCM

CAN commu-
nication

A/C ON signal

Combination meter

CAN commu-
nication

Vehicle speed signal