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Diagnostic Procedure NLEC1523 1 CHECK FOR INTAKE AIR LEAK 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. DTC P0300 - P0304 NO. 4 - 1 CYLINDER MISFIRE, MULTIPLE CYLINDER MISFIRE SR20DE Diagnostic Procedure EC-809 |