Infiniti I30 (A33). Manual — part 267
SEF032W
SEF267X
Component Description
NHEC0228
The EVAP canister vent control valve is located on the EVAP can-
ister and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is ener-
gized. A plunger will then move to seal the canister vent. The abil-
ity to seal the vent is necessary for the on board diagnosis of other
evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the
evaporative emission control system is depressurized and allows
“EVAP Control System (Small Leak)” diagnosis.
CONSULT-II Reference Value in Data Monitor
Mode
NHEC0229
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
VENT CONT/V
I
Ignition switch: ON
OFF
On Board Diagnosis Logic
NHEC0231
Malfunction is detected when an improper voltage signal is sent to
ECM through EVAP canister vent control valve.
Possible Cause
NHEC0512
I
Harness or connectors
(The valve circuit is open or shorted.)
I
EVAP canister vent control valve
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Component Description
EC-383
DTC Confirmation Procedure
NHEC0232
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery
voltage is more than 11V at idle.
SEF058Y
WITH CONSULT-II
NHEC0232S01
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and wait at least 8 seconds.
4)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-386.
WITH GST
NHEC0232S02
Follow the procedure “WITH CONSULT-II” above.
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
DTC Confirmation Procedure
EC-384
Wiring Diagram
NHEC0233
MEC742C
SEF668XB
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Wiring Diagram
EC-385
Diagnostic Procedure
NHEC0234
1
INSPECTION START
1. Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 3.
2
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-II
1. Turn ignition switch “OFF” and then turn “ON”.
2. Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-II.
3. Touch “ON/OFF” on CONSULT-II screen.
SEF989Y
4. Check for operating sound of the valve.
Clicking noise should be heard.
OK or NG
OK
©
GO TO 7.
NG
©
GO TO 3.
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER VENT CONTROL
VALVE (CIRCUIT)
Diagnostic Procedure
EC-386
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