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SEF186S
Description
NGEC0872
COMPONENT DESCRIPTION
NGEC0872S01
The vacuum cut valve and vacuum cut valve bypass valve are
installed in parallel on the EVAP purge line between the fuel tank
and the EVAP canister.
The vacuum cut valve prevents the intake manifold vacuum from
being applied to the fuel tank.
The vacuum cut valve bypass valve is a solenoid type valve and
generally remains closed. It opens only for on board diagnosis.
The vacuum cut valve bypass valve responds to signals from the
ECM. When the ECM sends an ON (ground) signal, the valve is
opened. The vacuum cut valve is then bypassed to apply intake
manifold vacuum to the fuel tank.
EVAPORATIVE EMISSION SYSTEM DIAGRAM
NGEC0872S02
SEF931Z
CONSULT-II Reference Value in Data Monitor
Mode
NGEC0873
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
VC/V BYPASS/V 쐌 Ignition switch: ON OFF
ECM Terminals and Reference Value
NGEC0874
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 the ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
120 P/B
Vacuum cut valve bypass
valve
[Ignition switch ON]
BATTERY VOLTAGE
(11 - 14V)
DTC P1490 VACUUM CUT VALVE BYPASS VALVE (CIRCUIT)
VG33E
Description
EC-1135
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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