Infiniti I30 (A33). Manual — part 180
SEF462UA
SEF254X
Without CONSULT-II
NHEC0019S0802
1)
Attach the EVAP service port adapter securely to the EVAP
service port.
2)
Also attach the pressure pump with pressure gauge to the
EVAP service port adapter.
3)
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.
4)
To locate the leak, deliver positive pressure to the EVAP sys-
tem 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).
5)
Remove EVAP service port adapter and hose with pressure
pump.
6)
Locate the leak using a leak detector. Refer to “EVAPORATIVE
EMISSION LINE DRAWING”, EC-36.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
EC-35
EVAPORATIVE EMISSION LINE DRAWING
NHEC0020
SEF996Z
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
EC-36
SEF253X
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
Evaporative Emission System (Cont’d)
EC-37
On Board Refueling Vapor Recovery (ORVR)
NHEC0606
SYSTEM DESCRIPTION
NHEC0606S01
SEF206VA
SEF830X
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
canister. 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:
I
Put a “CAUTION: INFLAMMABLE” sign in workshop.
I
Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
I
Be sure to furnish the workshop with a CO
2
fire extinguisher.
ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION
On Board Refueling Vapor Recovery (ORVR)
EC-38
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