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EC-338 [QG (WITH EURO-OBD)] DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS- FIRE 11. CHECK MASS AIR FLOW SENSOR With CONSULT-II Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-II. With GST Check mass air flow sensor signal in MODE 1 with GST. OK or NG OK >> GO TO 12. NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or engine grounds. Refer to EC-178, "DTC P0102, P0103 MAF SENSOR" . 12. CHECK SYMPTOM MATRIX CHART Check items on the rough idle symptom in . OK or NG OK >> GO TO 13. NG >> Repair or replace. 13. ERASE THE 1ST TRIP DTC Some tests may cause a 1st trip DTC to be set. EMISSION-RELATED DIAGNOSTIC INFORMATION" . >> GO TO 14. 14. CHECK INTERMITTENT INCIDENT Refer to EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END 1.0 - 4.0 g·m/sec: at idling 5.0 - 10.0 g·m/sec: at 2,500 rpm 1.0 - 4.0 g·m/sec: at idling 5.0 - 10.0 g·m/sec: at 2,500 rpm |