Nissan March K13. Manual - part 141

 

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Nissan March K13. Manual - part 141

 

 

COMPONENT PARTS

EC-25

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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Fuel Pump Control Module (FPCM)

INFOID:0000000005991051

When driving conditions demand a decrease in fuel supply, the fuel
pump control module (FPCM) reduces the supply voltage to the fuel
pump. When driving conditions demand an increase in fuel supply
(during engine start, low engine coolant temperature or high load),
the supply voltage to the fuel pump is increased.

Air Fuel Ratio (A/F) Sensor 1

INFOID:0000000005991052

DESCRIPTION

The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen-
sor. The sensor element of the A/F sensor 1 is composed an elec-
trode 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 800

°

C (1,472

°

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:0000000005991053

DESCRIPTION

JSBIA0297ZZ

JMBIA0112GB

PBIB3354E

EC-26

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

COMPONENT PARTS

The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
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. 

EGR Volume Control Valve

INFOID:0000000005991054

The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.

EGR Temperature Sensor

INFOID:0000000005991055

The EGR temperature sensor detects temperature changes in the
EGR passageway. When the EGR volume control valve opens, hot
exhaust gases flow, and the temperature in the passageway
changes. The EGR temperature sensor is a thermistor that modifies
a voltage signal sent from the ECM. This modified signal then
returns to the ECM as an input signal. As the temperature increases,
EGR temperature sensor resistance decreases.
This sensor is not directly used to control the engine system. It is
used only for the on board diagnosis.

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

PBIA9376J

SEF599K

COMPONENT PARTS

EC-27

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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<Reference data>

*: This data is reference value and is measured between ECM terminal 42 (EGR
temperature sensor) and 51 (Sensor ground).

CAUTION:

Never use ECM ground terminals when measuring input/output voltage. Doing
so may damage the ECM's transistor. Use a ground other than ECM terminals,
such as the ground.

When EGR system is operating.

Voltage: 0 - 1.5 V

Knock Sensor

INFOID:0000000005991056

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.

Cooling Fan

INFOID:0000000005991058

COOLING FAN CONTROL MODULE

Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to this ON/OFF
pulse duty signal, cooling fan control module sends cooling fan motor operating voltage to cooling fan motor.
The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.

COOLING FAN MOTOR

Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module. The revolu-
tion speed of cooling fan motor is controlled by duty cycle of the voltage.

EGR temperature

[

°

C (

°

F)]

 Voltage*

(V)

Resistance

(M

)

0 (32)

4.59

0.66 - 1.00

50 (122)

2.32

0.068 - 0.089

100 (212)

0.62

0.012 - 0.014

SEF068X

JSBIA0284ZZ

EC-28

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

COMPONENT PARTS

Intake Valve Timing Control Solenoid Valve

INFOID:0000000005991059

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.

EVAP Canister Purge Volume Control Solenoid Valve

INFOID:0000000005991060

The EVAP canister purge volume control solenoid valve is used to
control the flow rate of fuel vapor from the EVAP canister. 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.

Battery Current Sensor (With Battery Temperature Sensor)

INFOID:0000000005991061

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 

XX-XX, "*****"

.

CAUTION:

Never connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
NOTE:
Battery temperature sensor is not used for engine control system.

BATTERY CURRENT SENSOR

The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures the
charging/discharging current of the battery.

PBIB1842E

PBIA9215J

JPBIA3262ZZ

 

 

 

 

 

 

 

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