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SEF378Q
SEF143S
Component Description
NGEC0379
NOTE:
If DTC P1448 is displayed with P0440 or P1440, perform
trouble diagnosis for DTC P1448 first.
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
NGEC0380
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
VENT CONT/V 쐌 Ignition switch: ON OFF
ECM Terminals and Reference Value
NGEC0381
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
NGEC0382
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1448 쐌 EVAP canister vent control valve remains opened under
specified driving conditions.
쐌 EVAP canister vent control valve
쐌 EVAP control system pressure sensor
쐌 Blocked rubber tube to EVAP canister vent con-
trol valve
쐌 Water separator
쐌 EVAP canister is saturated with water.
쐌 Vacuum cut valve
DTC P1448 EVAPORATIVE EMISSION (EVAP) CANISTER
VENT CONTROL VALVE (OPEN)
KA24DE
Component Description
EC-519
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
GI
MA
EM
LC
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