Nissan Juke F15. Manual — part 450
COMPONENT PARTS
EC-613
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
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Intake Valve Timing Control Solenoid Valve
INFOID:0000000012198166
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Intake Valve Timing Intermediate Lock Control Solenoid Valve
INFOID:0000000012198167
Intake valve timing intermediate lock control solenoid valve is acti-
vated by ON/OFF signals from the ECM.
The intake valve timing intermediate lock control solenoid valve
opens/closes the path of oil pressure acting on the lock key in the
camshaft sprocket (INT).
• When the solenoid valve becomes ON, oil pressure to the lock key
is drained to perform intermediate lock.
• When the solenoid valve becomes OFF, oil pressure is acted on
the lock key to release the intermediate lock.
Exhaust Valve Timing Control Position Sensor
INFOID:0000000012198168
Exhaust valve timing control position sensor detects the protrusion of
the signal plate installed to the exhaust camshaft front end.
This sensor signal is used for sensing a position of the exhaust cam-
shaft.
The sensor consists of a permanent magnet and Hall IC.
When engine is running, the high and low parts of the teeth cause
the gap with the sensor to change.
The changing gap causes the magnetic field near the sensor to
change.
Due to the changing magnetic field, the voltage from the sensor
changes.
Exhaust Valve Timing Control Solenoid Valve
INFOID:0000000012198169
Exhaust valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The exhaust valve timing control solenoid valve changes the oil
amount and direction of flow through exhaust valve timing control
unit or stops oil flow.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the exhaust valve angle at the control
position.
PBIB1842E
PBIB1842E
JSBIA5655GB
PBIB1842E
EC-614
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
COMPONENT PARTS
Intake Manifold Runner Control Valve
INFOID:0000000012198170
Intake manifold runner control valve is integrated to intake mani-
fold.
Intake manifold runner control valve is mounted each port of the
intake manifold and opened/closed by the intake manifold runner
control valve motor.
ECM controls the intake manifold runner control valve motor, accord-
ing to signals of engine speed, water temperature, etc. and stabilizes
combustion by generating a strong tumble flow.
INTAKE MANIFOLD RUNNER CONTROL VALVE MOTOR
Intake manifold runner control valve motor is connected to the rear end of the valve shaft.
The motor opens or closes the valve by the output signal of the ECM.
EGR Volume Control Valve
INFOID:0000000012198171
EGR VOLUME CONTROL VALVE
The EGR volume control valve used a DC motor and controls the flow rate of EGR from downstream of
exhaust manifold catalyst. ECM controls the DC motor to make the valve opening angle in response to driving
conditions.
EGR CONTROL POSITION SENSOR
The EGR control valve control position sensor is built in the EGR control valve and uses a permanent magnet
and a semiconductor device. This sensor measures valve shaft movements and transmits a voltage signal to
ECM. Based on this signal, ECM judges the valve opening angle as of then and controls the motor to achieve
opening angle appropriate to the driving conditions.
EGR Pressure Sensor
INFOID:0000000012198173
The EGR pressure sensor detects the pressure difference between before and behind the EGR volume con-
trol valve. This sensor is not directly used for the engine system control, but used only for self-diagnosis.
G Sensor
INFOID:0000000012198174
The G sensor has a semiconductor acceleration sensor and detects
longitudinal G and tilt angle of the vehicle based on gravitational
acceleration.
In addition, the G sensor converts a detected tilt angle into an elec-
tric signal and transmits it to ECM.
Air Fuel Ratio (A/F) Sensor 1
INFOID:0000000012198175
DESCRIPTION
JSBIA5629ZZ
JSBIA1430ZZ
COMPONENT PARTS
EC-615
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
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The sensor element of the A/F sensor 1 is composed an electrode
layer, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement = 1, but also in the
lean and rich range. Together with its control electronics, the sensor
outputs a clear, continuous signal throughout a wide range.
The exhaust gas components diffuse through the diffusion layer at
the sensor cell. An electrode layer is applied voltage, and this current
relative oxygen density in lean. Also this current relative hydrocar-
bon density in rich.
Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this
electrode layer of current. In addition, a heater is integrated in the
sensor to ensure the required operating temperature of approxi-
mately 760
°C (1,400°F).
A/F SENSOR 1 HEATER
A/F sensor 1 heater is integrated in the sensor.
The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element within the specified range.
Heated Oxygen Sensor 2
INFOID:0000000012198176
DESCRIPTION
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air fuel ratio is controlled to stoichiometric, by the sig-
nal from the heated oxygen sensor 2.
This sensor is made of ceramic zirconia. The zirconia generates volt-
age from approximately 1 V in richer conditions to 0 V in leaner con-
ditions.
Under normal conditions the heated oxygen sensor 2 is not used for
engine control operation.
HEATED OXYGEN SENSOR 2 HEATER
Heated oxygen sensor 2 heater is integrated in the sensor.
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
JPBIA4038GB
PBIB3354E
SEF327R
Engine speed
Heated oxygen sensor 2 heater
Above 3,600 rpm
OFF
Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load
ON
EC-616
< SYSTEM DESCRIPTION >
[MR EXCEPT FOR NISMO RS MODELS]
COMPONENT PARTS
Knock Sensor
INFOID:0000000012198177
The knock sensor is attached to the cylinder block. It senses engine
knocking using a piezoelectric element. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
Engine Oil Pressure Sensor
INFOID:0000000012198178
The engine oil pressure (EOP) sensor is detects engine oil pressure
and transmits a voltage signal to the ECM.
Engine Oil Pressure Control Solenoid Valve
INFOID:0000000012198179
The engine oil pressure control solenoid valve performs the variable
hydraulic control (low oil pressure control and high oil pressure con-
trol) according to oil temperature and engine load.
Engine Oil Temperature Sensor
INFOID:0000000012198180
The engine oil temperature sensor is used to detect the engine oil
temperature. The sensor modifies a voltage signal from the ECM.
The modified signal returns to the ECM as the engine oil tempera-
ture input. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
JSBIA0284ZZ
JSBIA0292ZZ
JSBIA5624ZZ
SEF594K
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