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SEF278X
Description
NHEC0353
COMPONENT DESCRIPTION
NHEC0353S01
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
NHEC0353S02
SEF323U
CONSULT-II Reference Value in Data Monitor
Mode
NHEC0354
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
VC/V BYPASS/V I Ignition switch: ON OFF
On Board Diagnosis Logic
NHEC0356
Malfunction is detected when vacuum cut valve bypass valve does
not operate properly.
DTC P1491 VACUUM CUT VALVE BYPASS VALVE
Description
EC-582
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