Nissan Frontier D22. Instruction — part 366
EVAPORATIVE EMISSION SYSTEM
EC-567
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Component Inspection
UBS00DDQ
EVAP CANISTER
Check EVAP canister as follows:
1.
Pinch the fresh air hose.
2.
Blow air into port A and check that air flows freely through port
B .
Tightening Torque
Tighten EVAP canister as shown in the figure.
Make sure new O-ring is installed properly between EVAP can-
ister and EVAP canister vent control valve.
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)
1.
Wipe clean valve housing.
2.
Check valve opening pressure and vacuum.
3.
If out of specification, replace fuel filler cap as an assembly.
CAUTION:
Use only a genuine NISSAN fuel filler cap as a replacement. If
an incorrect fuel filler cap is used, the MIL may come on.
VACUUM CUT VALVE AND VACUUM CUT VALVE BYPASS VALVE
Refer to
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Refer to
SEF314V
BBIA0343E
SEF445Y
Pressure
: 16.0 - 20.0 kPa
(0.163 - 0.204 kg/cm
2
, 2.32 - 2.90 psi)
Vacuum
:
−6.0 to −3.5 kPa
(
−0.061 to −0.036 kg/cm
2
,
−0.87 to −0.51
psi)
SEF943S
EC-568
[KA24DE]
EVAPORATIVE EMISSION SYSTEM
FUEL TANK TEMPERATURE SENSOR
EVAP SERVICE PORT
Positive pressure is delivered to the EVAP system through the EVAP
service port. If fuel vapor leakage in the EVAP system occurs, use a
leak detector to locate the leak.
How To Detect Fuel Vapor Leakage
UBS00DDR
CAUTION:
●
Never use compressed air or a high pressure pump.
●
Do not start engine.
●
Do not exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in EVAP system.
NOTE:
Improper installation of adapter to the service port may cause a leak.
WITH CONSULT-II
1.
Attach the EVAP service port adapter securely to the EVAP service port.
2.
Also attach the pressure pump and hose.
3.
Turn ignition switch “ON”.
4.
Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT
MODE” with CONSULT-II.
5.
Touch “START”. A bar graph (Pressure indicating display) will
appear on the screen.
6.
Apply positive pressure to the EVAP system until the pressure
indicator reaches the middle of the bar graph.
7.
Remove the EVAP service port adapter and hose with pressure
pump.
SEF462UC
PEF658U
PEF917U
EVAPORATIVE EMISSION SYSTEM
EC-569
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
8.
Locate the leak using a leak detector. Refer to
ORATIVE EMISSION LINE DRAWING"
WITHOUT CONSULT-II
1.
Attach the EVAP service port adapter securely to the EVAP service port and pressure pump with pressure
gauge to the EVAP service port.
2.
Apply battery voltage to between the terminals of both EVAP
canister vent control valve and vacuum cut valve bypass valve
to make a closed EVAP system.
3.
To locate the leak, deliver positive pressure to the EVAP system
until pressure gauge points reach 1.38 to 2.76 kPa (0.014 to
0.028 kg/cm
2
, 0.2 to 0.4 psi).
4.
Remove the EVAP service port adapter and hose with pressure
pump.
5.
Locate the leak using a leak detector. Refer to
ORATIVE EMISSION LINE DRAWING"
SEF200U
SEF503V
SEF200U
EC-570
[KA24DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
PFP:00032
System Description
UBS00DDS
From the beginning of refueling, the fuel tank pressure goes up. When the pressure reaches the setting value
of the refueling control valve (RCV) opening pressure, the RCV is opened. After RCV opens, the air and vapor
inside the fuel tank go through refueling EVAP vapor cut valve, RCV and refueling vapor line to the EVAP can-
ister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and
refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged
during driving.
The RCV is always closed during driving and the evaporative emission control system is operated the same
as conventional system.
WARNING:
When conducting inspections below, be sure to observe the following:
●
Put a “CAUTION: INFLAMMABLE” sign in workshop.
●
Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
●
Be sure to furnish the workshop with a CO
2
fire extinguisher.
CAUTION:
●
Before removing fuel line parts, carry out the following procedures:
–
Put drained fuel in an explosion-proof container and put lid on securely.
–
Release fuel pressure from fuel line. Refer to
EC-46, "FUEL PRESSURE RELEASE"
–
Disconnect battery ground cable.
●
Always replace O-ring when the fuel gauge retainer is removed.
●
Do not kink or twist hose and tube when they are installed.
●
Do not tighten hose and clamps excessively to avoid damaging hoses.
●
After installation, run engine and check for fuel leaks at connection.
●
Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.
SEF206VA
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