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SEF530Q
Overall Function Check
NHEC0358
Use this procedure to check the overall function of vacuum cut
valve bypass valve. During this check, the 1st trip DTC might not
be confirmed.
WITH GST
NHEC0358S01
1) Remove vacuum cut valve and vacuum cut valve bypass valve
as an assembly.
2) Apply vacuum to port A and check that there is no suction from
port B.
3) Apply vacuum to port B and check that there is suction from
port A.
4) Blow air in port B and check that there is a resistance to flow
out of port A.
5) Supply battery voltage to the terminal.
6) Blow air in port A and check that air flows freely out of port B.
7) Blow air in port B and check that air flows freely out of port A.
8) If NG, go to “Diagnostic Procedure”, EC-586.
DTC P1491 VACUUM CUT VALVE BYPASS VALVE
Overall Function Check
EC-584
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