Nissan Versa Note. Manual - part 260

 

  Index      Nissan     Nissan Versa Note (2014 year) - Service and Repair Manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  258  259  260  261   ..

 

 

Nissan Versa Note. Manual - part 260

 

 

EC-22

< SYSTEM DESCRIPTION >

[HR16DE]

COMPONENT PARTS

<Reference data>

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

EVAP Canister Purge Volume Control Solenoid Valve

INFOID:0000000009020584

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:0000000009020585

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:0000000009020586

The EVAP control system pressure sensor detects pressure in the

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

sure increases.

Engine oil temperature [

°C (°F)]

Voltage

*

 (V)

Resistance (k

Ω)

–10 (14)

4.4

7.0 - 11.4

20 (68)

3.5

2.10 - 2.90

50 (122)

2.2

0.68 - 1.00

90 (194)

0.9

0.236 - 0.260

110 (230)

0.6

0.143 - 0.153

SEF012P

JSBIA0651ZZ

PBIB1263E

PBIB3370E

COMPONENT PARTS

EC-23

< SYSTEM DESCRIPTION >

[HR16DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Exhaust Valve Timing Control Solenoid Valve

INFOID:0000000009020587

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.

Fuel Injector

INFOID:0000000009020588

The fuel injector is a small, precise solenoid valve. When the ECM

supplies a ground to the fuel injector circuit, the coil in the fuel injec-

tor is energized. The energized coil pulls the ball valve back and

allows fuel to flow through the fuel injector into the intake manifold.

The amount of fuel injected depends upon the injection pulse dura-

tion. Pulse duration is the length of time the fuel injector remains

open. The ECM controls the injection pulse duration based on

engine fuel needs.

Fuel Pump

INFOID:0000000009020589

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

The ECM activates the fuel pump for a few seconds after the ignition switch is turned ON to improve engine

start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-

shaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the

engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump

operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel

pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.

JSBIA0652ZZ

JSBIA0742ZZ

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)

Engine speed*

Fuel pump control

Fuel pump relay

Fuel pump

Battery

Battery voltage*

Condition

Fuel pump operation

Ignition switch is turned to ON.

Operates for 1 second.

Engine running and cranking

Operates.

When engine is stopped

Stops in 1.5 seconds.

Except as shown above

Stops.

EC-24

< SYSTEM DESCRIPTION >

[HR16DE]

COMPONENT PARTS

Heated Oxygen Sensor 2

INFOID:0000000009020590

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

INFOID:0000000009020591

SYSTEM DESCRIPTION

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. 

OPERATION

Ignition Coil With Power Transistor

INFOID:0000000009020592

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns

ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil

secondary circuit.

Intake Air Temperature Sensor

INFOID:0000000009020593

The intake air temperature sensor is built-into mass air flow sensor

(1). The sensor detects intake air temperature 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.

SEF327R

Sensor

Input signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)

Engine speed

Heated oxygen sensor 2 
heater control

Heated oxygen sensor 2 heater

Engine coolant temperature sensor

Engine coolant temperature

Mass air flow sensor

Amount of intake air

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

PBIA9559J

COMPONENT PARTS

EC-25

< SYSTEM DESCRIPTION >

[HR16DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

<Reference data>

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

Intake Valve Timing Control Solenoid Valve

INFOID:0000000009020594

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.

Knock Sensor

INFOID:0000000009020595

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.

Battery Current Sensor (With Battery Temperature Sensor)

INFOID:0000000009696918

OUTLINE

The power generation voltage variable control enables fuel con-

sumption to be decreased by reducing the engine load which is

caused by the power generation of the generator.

Based on sensor signals, ECM judges whether or not the power

generation voltage variable control is performed. When performing

the power generation voltage variable control, ECM calculates the

target power generation voltage based on the sensor signal. And

ECM sends the calculated value as the power generation command

value to IPDM E/R. For the details of the power generation voltage

variable control, refer to

CHG-8, "System Description"

.

CAUTION:

Never connect the electrical component or the ground wire

directly to the battery terminal. The connection causes the malfunction of the power generation volt-

age variable control, and then the battery discharge may occur.

BATTERY CURRENT SENSOR

The battery current sensor is installed to the battery negative cable. The sensor measures the charging/dis-

charging current of the battery.

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

PBIB1842E

JSBIA0284ZZ

JPBIA3262ZZ

 

 

 

 

 

 

 

Content   ..  258  259  260  261   ..