Infiniti FX35 / FX45. Manual — part 465
EVAPORATIVE EMISSION SYSTEM
EC-621
< SERVICE INFORMATION >
[VK45DE]
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EC
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Check EVAP canister as follows:
1.
Block port B.
2.
Blow air into port A and check that it flows freely out of port C.
3.
Release blocked port B.
4.
Apply vacuum pressure to port B and check that vacuum pres-
sure exists at the ports A and C.
5.
Block port A and B.
6.
Apply pressure to port C and check that there is no leakage.
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 fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.
EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
FUEL TANK TEMPERATURE SENSOR
EVAP CANISTER VENT CONTROL VALVE
EVAP CONTROL SYSTEM PRESSURE SENSOR
EVAP SERVICE PORT
PBIB1044E
SEF445Y
Pressure:
15.3 - 20.0 kPa (0.156 - 0.204 kg/cm
2
, 2.22 -
2.90 psi)
Vacuum:
−
6.0 to
−
3.3 kPa (
−
0.061 to
−
0.034 kg/cm
2
,
−
0.87 to
−
0.48 psi)
SEF943S
EC-622
< SERVICE INFORMATION >
[VK45DE]
EVAPORATIVE EMISSION SYSTEM
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.
Removal and Installation
INFOID:0000000001326502
EVAP CANISTER
Tighten EVAP canister as shown in the figure.
EVAP CANISTER VENT CONTROL VALVE
1.
Turn EVAP canister vent control valve counterclockwise.
2.
Remove the EVAP canister vent control valve.
Always replace O-ring with a new one.
How to Detect Fuel Vapor Leakage
INFOID:0000000001326503
CAUTION:
• Do not use compressed air or a high pressure pump.
• Do not exceed 4.12 kPa (0.042 kg/cm
2
, 0.6 psi) of pressure in EVAP system.
NOTE:
• Do not start engine.
• Improper installation of EVAP service port adapter to the EVAP service port may cause a leak.
WITH CONSULT-III
1.
Attach the EVAP service port adapter securely to the EVAP service port.
2.
Also attach the pressure pump and hose to the EVAP service port adapter.
SEF462UA
PBIB1628E
PBIB1030E
EVAPORATIVE EMISSION SYSTEM
EC-623
< SERVICE INFORMATION >
[VK45DE]
C
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3.
Turn ignition switch ON.
4.
Select the “EVAP SYSTEM CLOSE” of “WORK SUPPORT MODE” with CONSULT-III.
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 EVAP service port adapter and hose with pressure pump.
8.
Locate the leak using a leak detector. Refer to
WITHOUT CONSULT-III
1.
Attach the EVAP service port adapter securely to the EVAP ser-
vice port.
2.
Also attach the pressure pump with pressure gauge to the EVAP
service port adapter.
3.
Apply battery voltage between the terminals of EVAP canister vent control valve to make a closed EVAP
system.
4.
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).
5.
Remove EVAP service port adapter and hose with pressure pump.
6.
Locate the leak using a leak detector. Refer to
.
SEF200U
SEF462UA
PBIB1522E
EC-624
< SERVICE INFORMATION >
[VK45DE]
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
System Description
INFOID:0000000001326504
From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut
valve and EVAP/ORVR 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.
WARNING:
When conducting inspections below, be sure to observe the following:
• Put a “CAUTION: FLAMMABLE” 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
- 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.
Diagnosis Procedure
INFOID:0000000001326505
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1.
CHECK EVAP CANISTER
1.
Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
2.
Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK IF EVAP CANISTER SATURATED WITH WATER
PBIB1068E
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