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6 DETECT MALFUNCTIONING PART Check the following. I Harness connectors T19, T20 I Harness connectors T1, B113 I Harness connectors B120, B10 I Harness connectors B3, M8 I Harness connectors M49, F23 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. SEF807Y Without CONSULT-II Check air passage continuity and operation delay time under the following conditions. SEF557Y 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-146. © 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 (CIRCUIT) Diagnostic Procedure (Cont’d) EC-567 |