Nissan Frontier. Manual - part 368

EVAPORATIVE EMISSION SYSTEM

EC-43

< SYSTEM DESCRIPTION >

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ALBIA0513ZZ

1.

EVAP vapor purge line

2.

EVAP canister vent control valve 
(view with bed removed)

3.

EVAP control system pressure 
sensor

4.

Drain filter

5.

EVAP canister

Front

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EC-44

< SYSTEM DESCRIPTION >

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INTAKE VALVE TIMING CONTROL

INTAKE VALVE TIMING CONTROL

Description

INFOID:0000000009480732

SYSTEM DESCRIPTION

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

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 control solenoid

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.

Sensor

Input signal to ECM

ECM function

Actuator

Crankshaft position sensor (POS)

Engine speed
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*

PBIB3279E

FUEL FILLER CAP WARNING SYSTEM

EC-45

< SYSTEM DESCRIPTION >

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FUEL FILLER CAP WARNING SYSTEM

System Diagram

INFOID:0000000009480733

System Description

INFOID:0000000009480734

INPUT/OUTPUT SIGNAL CHART

Input

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

Output

*: This signal is sent to the combination meter via the CAN communication line.

SYSTEM DESCRIPTION

The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and

malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination

meter.

ECM judges a refueled state, based on a fuel level signal transmitted from the combination meter.

When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled

state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter

via CAN communication. 

When receiving the signal, the combination meter turns ON the fuel filler cap warning display.

CAUTION:

Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.

Reset Operation

The fuel filler cap warning lamp tunes OFF, according to any condition listed below:

• Reset operation is performed by operating the meter control switch on the combination meter.

- When the reset operation is performed, the combination meter transmits a fuel filler cap warning reset signal

to ECM via CAN communication. ECM transmits a fuel filler cap warning display signal (request for display

OFF) to the combination meter via CAN communication. When receiving the signal, the combination meter

turns OFF the fuel filler cap warning display.

• EVAP leak diagnosis result is normal.

• Fuel refilled.

Unit/Sensor

Input signal to ECM

ECM function

EVAP control system pressure sensor

Pressure in purge line

Fuel filler cap warning control

Combination meter

Fuel level sensor signal

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Fuel filler cap warning reset signal

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JSBIA1557GB

Unit

Output signal

Actuator

ECM

Fuel filler cap warning display signal

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Combination meter

EC-46

< SYSTEM DESCRIPTION >

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FUEL FILLER CAP WARNING SYSTEM

• DTC erased by using CONSULT.

NOTE:

MIL turns ON if a malfunction is detected in leak diagnosis results again at the trip after the fuel filler cap warn-

ing display turns ON/OFF.