Nissan Juke F15. Manual - part 306

 

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Nissan Juke F15. Manual - part 306

 

 

COMPONENT PARTS

EC-37

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

C

D

E

F

G

H

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J

K

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A

EC

N

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Mass Air Flow Sensor (With Intake Air Temperature Sensor 1)

INFOID:0000000012197636

MASS AIR FLOW SENSOR

The mass air flow sensor (1) is placed in the stream of intake air. It

measures the intake flow rate by measuring a part of the entire

intake flow. The mass air flow sensor controls the temperature of the

hot wire to a certain amount. The heat generated by the hot wire is

reduced as the intake air flows around it. The more air, the greater

the heat loss. 

Therefore, the electric current supplied to hot wire is changed to

maintain the temperature of the hot wire as air flow increases. The

ECM detects the air flow by means of this current change.

INTAKE AIR TEMPERATURE SENSOR 1

The intake air temperature sensor 1 is built-into mass air flow sensor. The sensor detects intake air tempera-

ture and transmits a signal to the ECM.

The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical

resistance of the thermistor decreases in response to the temperature rise.

<Reference data>

*: These data are reference values and are measured between ECM terminals.

Turbocharger

INFOID:0000000012197637

Turbocharger boost is controlled by adjusting the pressure to the dia-

phragm of the boost control actuator.

TURBOCHARGER BOOST CONTROL SOLENOID VALVE

Turbocharger boost control solenoid valve is ON/OFF duty controlled by ECM.

PBIA9559J

Intake air temperature

[

°C (°F)]

Voltage

*

 (V)

Resistance (k

Ω)

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

SEF012P

JPBIA4612ZZ

EC-38

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

COMPONENT PARTS

And it adjusts the pressure in the diaphragm of the boost control

actuator. The longer the turbocharger boost control solenoid valve is

ON, the higher the boost is increased. 

Turbocharger Boost Sensor (With Intake Air Temperature Sensor 2)

INFOID:0000000012197638

TURBOCHARGER BOOST SENSOR

The turbocharger boost sensor detects the pressure of the outlet

side of the intercooler. When increasing the pressure, the output

voltage of the sensor to the ECM increases. 

INTAKE AIR TEMPERATURE SENSOR 2

The intake air temperature sensor 2 is built-into turbocharger boost sensor. The sensor detects intake air tem-

perature and transmits a signal to the ECM.

The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical

resistance of the thermistor decreases in response to the temperature rise.

<Reference data>

*: These data are reference values and are measured between ECM terminals.

A.

From boost pipe

B.

To boost control actuator

C.

To Air cleaner

JPBIA4616ZZ

JPBIA4620ZZ

JMBIA1453GB

Intake air temperature

[

°C (°F)]

Voltage

*

 (V)

Resistance (k

Ω)

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

SEF012P

COMPONENT PARTS

EC-39

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

C

D

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F

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EC

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Engine Coolant Temperature Sensor

INFOID:0000000012197639

The engine coolant temperature sensor is used to detect the engine

coolant temperature. The sensor modifies a voltage signal from the

ECM. The modified signal returns to the ECM as the engine coolant

temperature input. The sensor uses a thermistor which is sensitive to

the change in temperature. The electrical resistance of the ther-

mistor decreases as temperature increases.

<Reference data>

*: These data are reference values and are measured between ECM terminals.

Crankshaft Position Sensor (POS)

INFOID:0000000012197640

The crankshaft position sensor (POS) is located on the oil pan facing

the gear teeth (cogs) of the signal plate. It detects the fluctuation of

the engine revolution.

The sensor consists of a permanent magnet and Hall IC.

When the 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.

The ECM receives the voltage signal and detects the fluctuation of

the engine revolution.

ECM receives the signals as shown in the figure.

SEF594K

Engine coolant temperature

[

°C (°F)]

Voltage

*

 (V)

Resistance (k

Ω)

–10 (14)

4.4

7.0 - 11.4

20 (68)

3.5

2.37 - 2.63

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

SEF012P

JPBIA4617ZZ

JMBIA0714GB

EC-40

< SYSTEM DESCRIPTION >

[MR FOR NISMO RS MODELS]

COMPONENT PARTS

Camshaft Position Sensor (PHASE)

INFOID:0000000012197641

The camshaft position sensor (PHASE) senses the retraction of

intake camshaft to identify a particular cylinder. The camshaft posi-

tion sensor (PHASE) senses the piston position.

When the crankshaft position sensor (POS) system becomes inoper-

ative, the camshaft position sensor (PHASE) provides various con-

trols of engine parts instead, utilizing timing of cylinder identification

signals.

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. 

ECM receives the signals as shown in the figure.

Intake Valve Timing Control Solenoid Valve

INFOID:0000000012197642

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.

Exhaust Valve Timing Control Position Sensor

INFOID:0000000012197643

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. 

JPBIA4621ZZ

JMBIA0714GB

PBIB1842E

JPBIA4622ZZ

 

 

 

 

 

 

 

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