DTC    P0300    Random / Multiple Cylinder Misfire Detected


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

CONFIRMATION DRIVING PATTERN

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS)

READ DATA LIST (MISFIRE RPM AND MISFIRE LOAD)

CHECK PCV HOSE CONNECTIONS

CHECK MISFIRE COUNT (CYL #10, #20, #30, #40, #50 AND #60)

CHECK SPARK PLUG

CHECK FOR SPARKS AND IGNITION

CHECK CYLINDER COMPRESSION PRESSURE OF MISFIRING CYLINDER

CHANGE NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER

INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50 AND/OR #60 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 FOR LOOSE AND JUMPED TOOTH ON TIMING CHAIN)

CHECK FUEL PRESSURE

READ DATA LIST (COOLANT TEMP)

READ DATA LIST (MAF)