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3) Turn ignition switch “OFF” and wait at least 10 seconds. 4) Start engine again and drive at 1,500 to 3,000 rpm for at least NOTE: If 1st trip DTC is detected, go to “Diagnostic Procedure”, With GST Follow the procedure “With CONSULT-II” above. Diagnostic Procedure NCEC0204 1 CHECK FOR INTAKE AIR LEAK AND PCV HOSE 1. Start engine and run it at idle speed. OK or NG OK © GO TO 2. NG © Discover air leak location and repair. 2 CHECK FOR EXHAUST SYSTEM CLOGGING Stop engine and visually check exhaust tube, three way catalyst and muffler for dents. OK or NG OK © GO TO 3. NG © Repair or replace it. 3 CHECK EGR FUNCTION Perform DTC Confirmation Procedure for DTC P1402 EGR FUNCTION (OPEN). OK or NG OK © GO TO 4. NG © Repair EGR system. GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MISFIRE DTC Confirmation Procedure (Cont’d) EC-323 |