Caution / Notice / Hint

HINT: 

• If the customer reports a knocking sound or drivability problems, check the "Consecutive Prevention Cylinder #1 History 1 to Consecutive Prevention Cylinder #4 History 4" items in the Data List.
• Explain to the customer that this is normal control to prevent pre-ignition (protect the engine) if the (distance traveled recorded in the appropriate Data List subtracted from the distance traveled in the "Distance for Control" item in the Data List) matches the (distance traveled indicated by the customer subtracted from the current distance traveled).