Infiniti M35/M45 Y50. Manual — part 392
EVAPORATIVE EMISSION SYSTEM
EC-41
[VQ35DE]
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: Vehicle front
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1.
EVAP canister vent control valve
2.
EVAP canister
3.
EVAP control system pressure sen-
sor
NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose or purge hoses.
PBIB2780E
EC-42
[VQ35DE]
EVAPORATIVE EMISSION SYSTEM
Component Inspection
NBS004SC
EVAP CANISTER
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 FULLER 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
Refer to
FUEL TANK TEMPERATURE SENSOR
Refer to
EVAP CANISTER VENT CONTROL VALVE
Refer to
EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to
PBIB2728E
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
EVAPORATIVE EMISSION SYSTEM
EC-43
[VQ35DE]
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EC
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.
Removal and Installation
NBS004SD
EVAP CANISTER
Tighten EVAP canister as shown in the figure.
EVAP CANISTER VENT CONTROL VALVE
1.
Turn EVAP canister vent control valve counterclockwise.
●
Lock (A)
●
Unlock (B)
2.
Remove the EVAP canister vent control valve.
Always replace O-ring with a new one.
How to Detect Fuel Vapor Leakage
NBS004SE
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.
SEF462UA
1.
EVAP control system pressure sen-
sor
2.
O-ring
3.
EVAP canister
4.
O-ring
5.
EVAP canister vent control valve
PBIB2729E
PBIB2730E
EC-44
[VQ35DE]
EVAPORATIVE EMISSION SYSTEM
NOTE:
●
Do not start engine.
●
Improper installation of EVAP service port adapter to the EVAP 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 to the EVAP service port adapter.
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 EVAP service port adapter and hose with pressure
pump.
8.
Locate the leak using a leak detector. Refer to
WITHOUT CONSULT-II
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.
PEF838U
PEF917U
SEF200U
SEF462UA
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