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Nissan Juke F15. Manual - part 450

COMPONENT PARTS

EC-613

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

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

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]

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

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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