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6 DETECT MALFUNCTIONING PART
Check the following.
I Harness connectors B3, M6
I Harness connectors M81, F49
I Harness for open or short between vacuum cut valve bypass valve and ECM
© Repair open circuit or short to ground or short to power in harness or connectors.
7 CHECK VACUUM CUT VALVE BYPASS VALVE
With CONSULT-II
1. Reconnect harness disconnected connectors.
2. Turn ignition switch ON.
3. Perform “VC/V BYPASS/V” in “ACTIVE TEST” mode.
4. Check air passage continuity and operation delay time under the following conditions.
SEC156D
Without CONSULT-II
Check air passage continuity and operation delay time under the following conditions.
SEF358X
OK or NG
OK © GO TO 8.
NG © Replace vacuum cut valve bypass valve.
8 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-156.
© INSPECTION END
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1490 VACUUM CUT VALVE BYPASS VALVE
Diagnostic Procedure (Cont’d)
EC-627
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