Nissan March K13. Manual - part 145

SYSTEM

EC-41

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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EVAPORATIVE EMISSION SYSTEM : System Diagram

INFOID:0000000005995411

EVAPORATIVE EMISSION SYSTEM : System Description

INFOID:0000000005995412

INPUT/OUTPUT SIGNAL CHART

*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.

JSBIA0322GB

Sensor

Input signal to ECM

ECM function

Actuator

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

Engine speed

*1

EVAP canister 
purge flow control

EVAP canister purge volume 
control solenoid valve

Mass air flow sensor

Amount of intake air

Engine coolant temperature sensor

Engine coolant temperature

Air fuel ratio (A/F) sensor 1

Density of oxygen in exhaust gas
(Mixture ratio feedback signal)

Throttle position sensor

Throttle position

Accelerator pedal position sensor

Accelerator pedal position

Battery

Battery voltage

*1

Combination meter

Vehicle speed signal

*2

EC-42

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

SYSTEM

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating.

FUEL PUMP CONTROL MODULE (FPCM)

FUEL PUMP CONTROL MODULE (FPCM) : System Diagram

INFOID:0000000005995413

FUEL PUMP CONTROL MODULE (FPCM) : System Description

INFOID:0000000005995414

INPUT/OUTPUT SIGNAL CHART

PBIB3039E

JSBIA0366GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed*

Fuel pump control

FPCM

↓

Fuel pump

Camshaft position sensor (PHASE)

Engine coolant temperature sensor

Engine coolant temperature

Mass air flow sensor

Amount of intake air

Battery

Battery voltage*

SYSTEM

EC-43

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

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

SYSTEM DESCRIPTION

The fuel pump control module (FPCM) controls the discharging volume of the fuel pump by the FPCM control
signals (Low/Mid/High) depending on driving conditions. 

INTAKE VALVE TIMING CONTROL

INTAKE VALVE TIMING CONTROL : System Diagram

INFOID:0000000005995415

INTAKE VALVE TIMING CONTROL : System Description

INFOID:0000000005995416

INPUT/OUTPUT SIGNAL CHART

*: This signal is sent to the ECM through CAN communication line.

Conditions

Amount of fuel flow

Supplied voltage

For 1 second after turning ignition switch ON

Low

Approximately 8.5 V

• Engine cranking
• Engine coolant temperature is below 10

°

C (50

°

F)

• Engine is running under high load and high speed conditions

High

Battery voltage

(11 - 14 V)

Except the above

Mid

Approximately 10 V

JSBIA0323GB

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed and piston position

Intake valve 
timing control

Intake valve timing control 
solenoid valve

Camshaft position sensor (PHASE)

Engine coolant temperature sensor

Engine coolant temperature

Combination meter

Vehicle speed signal*

EC-44

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 1)]

SYSTEM

SYSTEM DESCRIPTION

This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.

MBIB1560E