Nissan Rogue. Manual - part 439

EC-24

< SYSTEM DESCRIPTION >

[QR25DE]

COMPONENT PARTS

Exhaust Valve Timing Control Solenoid Valve

INFOID:0000000011277834

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.

Intake Manifold Runner Control Valve

INFOID:0000000011277835

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 tunmble 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.

INTAKE MANIFOLD RUNNER CONTROL VALVE POSITION SENSOR

Intake manifold runner control valve position sensor is connected to the front end of the valve shaft.

The sensor consists of valiable resister. It senses the valve shaft movement and feeds the voltage signals to

the ECM.

Air Fuel Ratio (A/F) Sensor 1

INFOID:0000000011277836

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 hydrocarbon density

in rich.

PBIB1842E

JSBIA4549ZZ

JPBIA4038GB

COMPONENT PARTS

EC-25

< SYSTEM DESCRIPTION >

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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:0000000011277837

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. 

Knock Sensor

INFOID:0000000011277838

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.

JPBIA5446GB

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

JSBIA0284ZZ

EC-26

< SYSTEM DESCRIPTION >

[QR25DE]

COMPONENT PARTS

Engine Oil Pressure Sensor

INFOID:0000000011277839

The engine oil pressure (EOP) sensor is detects engine oil pressure

and transmits a voltage signal to the ECM.

Engine Oil Temperature Sensor

INFOID:0000000011277840

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.

<Reference data>

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

Cooling Fan

INFOID:0000000011277841

The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant

pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].

Cooling fan operates at each speed when the current flows in the cooling fan motor.

Refer to 

EC-48, "COOLING FAN CONTROL : System Description"

 for cooling fan operation.

JSBIA0292ZZ

JPBIA5280ZZ

Engine oil 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)

1.0

0.236 - 0.260

110 (230)

0.6

0.143 - 0.153

SEF012P

COMPONENT PARTS

EC-27

< SYSTEM DESCRIPTION >

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EVAP Canister

INFOID:0000000011277842

EVAP canister stores the generated fuel vapors in the sealed fuel

tank to activated charcoals of EVAP canister when the engine is not

operating or when refueling to the fuel tank.

EVAP Canister Purge Volume Control Solenoid Valve

INFOID:0000000011277843

The EVAP canister purge volume control solenoid valve uses a ON/

OFF duty to control the flow rate of fuel vapor from the EVAP canis-

ter. The EVAP canister purge volume control solenoid valve is

moved by ON/OFF pulses from the ECM. The longer the ON pulse,

the greater the amount of fuel vapor that will flow through the valve.

EVAP Canister Vent Control Valve

INFOID:0000000011277844

The EVAP canister vent control valve is located on the EVAP canis-

ter and is used to seal the canister vent.

This solenoid valve responds to signals from the ECM. When the

ECM sends an ON signal, the coil in the solenoid valve is energized.

A plunger will then move to seal the canister vent. The ability to seal

the vent is necessary for the on board diagnosis of other evaporative

emission control system components.

This solenoid valve is used only for diagnosis, and usually remains

opened.

When the vent is closed, under normal purge conditions, the evapo-

rative emission control system is depressurized and allows “EVAP

Control System” diagnosis.

EVAP Control System Pressure Sensor

INFOID:0000000011277845

The EVAP control system pressure sensor detects pressure in the

purge line. The sensor output voltage to the ECM increases as pres-

sure increases.

JPBIA5851ZZ

JMBIA0069ZZ

PBIB1263E

PBIB3370E