DTC    P0300    Random / Multiple Cylinder Misfire Detected

DESCRIPTION

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0300, P0301, P0302, P0303, P0304)

CHECK INJECTOR COMPENSATION CODE

CHECK WIRE HARNESS AND CONNECTOR (IN ENGINE ROOM)

READ VALUE USING INTELLIGENT TESTER (INJECTION FEEDBACK VAL #1 TO #4 AND INJECTION VOLUME)

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FUEL CUT FOR IDENTIFYING MALFUNCTIONING CYLINDER)

CHECK CYLINDER COMPRESSION PRESSURE OF MALFUNCTIONING CYLINDER

CHECK VALVE CLEARANCE OF MALFUNCTIONING CYLINDER

CHECK WHETHER DTC OUTPUT RECURS (DTC P0300, P0301, P0302, P0303 AND/OR P0304)

REPLACE INJECTOR ASSEMBLY

PERFORM REGISTRATION AND INITIALIZATION

BLEED AIR FROM FUEL SYSTEM

REGISTER INJECTOR COMPENSATION CODE

REPAIR OR REPLACE HARNESS OR CONNECTOR

ADJUST VALVE CLEARANCE

CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED