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SEF378Q
SEF143S
Component Description
NGEC0256
The EVAP canister vent control valve is located on the EVAP can-
ister and is used to seal the canister vent.
This solenoid (the EVAP canister vent control valve) responds to
signals from the ECM.
When the ECM sends an ON signal, the coil in the solenoid valve
is energized.
Aplunger will then move toseal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evapora-
tive 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
NGEC0257
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
VENT CONT/V 쐌 Ignition switch: ON OFF
ECM Terminals and Reference Value
NGEC0258
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
108 R/G
EVAP canister vent control
valve
[Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
NGEC0259
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0446 쐌 An improper voltage signal is sent to ECM through EVAP
canister vent control valve.
쐌 Harness or connectors
(EVAP canister vent control valve circuit is open
or shorted.)
쐌 EVAP canister vent control valve
DTC P0446 EVAPORATIVE EMISSION (EVAP) CANISTER
VENT CONTROL VALVE (CIRCUIT)
KA24DE
Component Description
EC-377
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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