Nissan Frontier. Instruction — part 482
EVAPORATIVE EMISSION SYSTEM
EC-499
< SYSTEM DESCRIPTION >
[VQ40DE FOR USA AND CANADA]
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1.
EVAP vapor purge line
2.
EVAP canister vent control valve
(view with bed removed)
3.
EVAP control system pressure sen-
sor
4.
Drain filter
5.
EVAP canister
:Vehicle front
:Previous page
ALBIA0513ZZ
EC-500
< SYSTEM DESCRIPTION >
[VQ40DE FOR USA AND CANADA]
INTAKE VALVE TIMING CONTROL
INTAKE VALVE TIMING CONTROL
Description
INFOID:0000000009481199
SYSTEM DESCRIPTION
*: This signal is sent to the ECM via the 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 and piston position
Intake valve
timing control
Intake valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine coolant temperature sensor
Engine coolant temperature
Wheel sensor
Vehicle speed*
PBIB3279E
FUEL FILLER CAP WARNING SYSTEM
EC-501
< SYSTEM DESCRIPTION >
[VQ40DE FOR USA AND CANADA]
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FUEL FILLER CAP WARNING SYSTEM
System Diagram
INFOID:0000000009481200
System Description
INFOID:0000000009481201
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
Fuel filler cap warning reset signal
*
JSBIA0954GB
Unit
Output signal
Actuator
ECM
Fuel filler cap warning display signal
*
Combination meter
EC-502
< SYSTEM DESCRIPTION >
[VQ40DE FOR USA AND CANADA]
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.
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