Nissan Juke F15. Instruction — part 309
SYSTEM
EC-49
< SYSTEM DESCRIPTION >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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
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
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