DTC    P0300    Random / Multiple Cylinder Misfire Detected

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

CONFIRMATION DRIVING PATTERN

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT

CHECK MISFIRE RPM AND MISFIRE LOAD

CHECK CONNECTION OF PCV HOSE

CHECK MISFIRE COUNT (CYL #1, #2, #3, #4, #5, #6, #7, #8)

PERFORM ACTIVE TEST (FUEL CUT #1 TO #8)

INSPECT SPARK PLUG

CHECK SPARK AND IGNITION

CHECK CYLINDER COMPRESSION PRESSURE ON MISFIRING CYLINDER

CHANGE NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER

CHECK ECM (#1, #2, #3, #4, #5, #6, #7, #8 VOLTAGE)

CHECK WIRE HARNESS (INJECTOR - ECM)

CHECK FUEL INJECTOR OF MISFIRING CYLINDER

CHECK VALVE CLEARANCE OF MISFIRING CYLINDER

CHECK AIR INDUCTION SYSTEM

CHECK VALVE TIMING

CHECK FUEL PRESSURE

READ DATA LIST (COOLANT TEMP)

READ DATA LIST (MAF)