Infiniti Q45. Manual — part 350
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-39
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
NBS001QH
SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.
1.
CHECK EVAP CANISTER
1.
Remove EVAP canister with EVAP canister vent control valve attached.
2.
Weigh the EVAP canister with EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 lb).
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Yes or No
Yes
>> GO TO 3.
No
>> GO TO 6.
3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4.
CHECK WATER SEPARATOR
Refer to
OK or NG
OK
>> GO TO 5.
NG
>> Replace water separator.
5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.
>> Repair or replace EVAP hose.
6.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to
OK or NG
OK
>> GO TO 7.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank.
7.
CHECK REFUELING CONTROL VALVE
Refer to
OK or NG
OK
>> INSPECTION END
NG
>> Replace refueling control valve with fuel tank.
SEF596U
EC-40
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG
WHILE REFUELING.
1.
CHECK EVAP CANISTER
1.
Remove EVAP canister with EVAP canister vent control valve attached.
2.
Weigh the EVAP canister with EVAP canister vent control valve attached.
The weight should be less than 1.8 kg (4.0 lb).
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK IF EVAP CANISTER SATURATED WITH WATER
Does water drain from the EVAP canister?
Yes or No
Yes
>> GO TO 3.
No
>> GO TO 6.
3.
REPLACE EVAP CANISTER
Replace EVAP canister with a new one.
>> GO TO 4.
4.
CHECK WATER SEPARATOR
Refer to
.
OK or NG
OK
>> GO TO 5.
NG
>> Replace water separator.
5.
DETECT MALFUNCTIONING PART
Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.
>> Repair or replace EVAP hose.
6.
CHECK VENT HOSES AND VENT TUBES
Check hoses and tubes between EVAP canister and refueling control valve for clogging, kink, looseness and
improper connection.
OK or NG
OK
>> GO TO 7.
NG
>> Repair or replace hoses and tubes.
7.
CHECK FILLER NECK TUBE
Check signal line and recirculation line for clogging, dents and cracks.
OK or NG
OK
>> GO TO 8.
NG
>> Replace filler neck tube.
SEF596U
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
EC-41
C
D
E
F
G
H
I
J
K
L
M
A
EC
8.
CHECK REFUELING CONTROL VALVE
Refer to
OK or NG
OK
>> GO TO 9.
NG
>> Replace refueling control valve with fuel tank.
9.
CHECK REFUELING EVAP VAPOR CUT VALVE
Refer to
OK or NG
OK
>> GO TO 10.
NG
>> Replace refueling EVAP vapor cut valve with fuel tank.
10.
CHECK FUEL FILLER TUBE
Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.
OK or NG
OK
>> GO TO 11.
NG
>> Replace fuel filler tube.
11.
CHECK ONE-WAY FUEL VALVE-I
Check one-way valve for clogging.
OK or NG
OK
>> GO TO 12.
NG
>> Repair or replace one-way fuel valve with fuel tank.
12.
CHECK ONE-WAY FUEL VALVE-II
1.
Make sure that fuel is drained from the tank.
2.
Remove fuel filler tube and hose.
3.
Check one-way fuel valve for operation as follows.
When a stick is inserted, the valve should open, when removing
stick it should close.
Do not drop any material into the tank.
OK or NG
OK
>> INSPECTION END
NG
>> Replace fuel filler tube or replace one-way fuel valve
with fuel tank.
Component Inspection
NBS001QI
WATER SEPARATOR
1.
Check visually for insect nests in the water separator air inlet.
2.
Check visually for cracks or flaws in the appearance.
3.
Check visually for cracks or flaws in the hose.
SEF665U
EC-42
ON BOARD REFUELING VAPOR RECOVERY (ORVR)
4.
Check that A and C are not clogged by blowing air into B with
A , and then C plugged.
5.
In case of NG in items 2 - 4, replace the parts.
NOTE:
●
Do not disassemble water separator.
REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1.
Remove fuel tank. Refer to
.
2.
Drain fuel from the tank as follows:
a.
Remove fuel feed hose located on the fuel gauge retainer.
b.
Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.
c.
Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.
3.
Check refueling EVAP vapor cut valve for being stuck to close as follows.
Blow air into the refueling EVAP vapor cut valve (from hose end B), and check that the air flows freely into
the tank.
4.
Check EVAP vapor cut valve for being stuck to open as follows.
a.
Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
b.
Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.
c.
Put fuel tank upside down.
d.
Apply vacuum pressure to both hose ends A and B [
−
13.3 kPa (
−
100 mmHg,
−
3.94 inHg)] with fuel gauge
retainer remaining open and check that the pressure is applicable.
Without CONSULT-II
1.
Remove fuel tank. Refer to
.
2.
Drain fuel from the tank as follows:
a.
Remove fuel gauge retainer.
b.
Drain fuel from the tank using a handy pump into a fuel container.
3.
Check refueling EVAP vapor cut valve for being stuck to close as follows.
PBIB1032E
PBIB1135E
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