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3 CHECK IACV-AAC VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch “OFF”. Refer to Wiring Diagram. MTBL0354 Continuity should exist. 4. Also check harness for short to ground and short to power. OK or NG OK © GO TO 5. NG © GO TO 4. 4 DETECT MALFUNCTIONING PART Check the following. I Harness connectors F101, F6 I Harness for open or short between IACV-AAC valve and ECM © Repair harness connectors. 5 CHECK AIR CONTROL VALVE (POWER STEERING) OPERATION-I 1. Reconnect ECM harness connector and IACV-AAC valve harness connector. SEF995Y Vacuum slightly exists or does not exist. OK or NG OK © GO TO 6. NG © Replace air control valve (Power steering). GI MA EM LC FE AT TF PD AX SU BR ST RS BT HA SC EL IDX DTC P0505 IDLE AIR CONTROL VALVE (IACV) — AUXILIARY AIR CONTROL (AAC) VALVE Diagnostic Procedure (Cont’d) EC-427 |