Diagnostic Method

• Abnormality Judgment 

  Judge NG when the cumulative time until completing the malfunction criteria below becomes more than the time needed for diagnosis.

• Judgment Value 
  JUDGMENT VALUE (ABNORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  Actual - target engine speed	≥ 800 rpm
  ISC closed loop compensation value	= MIN value

Time Needed for Diagnosis  : 1 second

Malfunction Indicator Light Illumination  : Illuminates as soon as malfunction occurs.

• Normality Judgment 

  Judge OK when one of the malfunction criteria below is completed.

• Judgment Value 
  JUDGMENT VALUE (NORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  ISC closed loop compensation value	# MIN value
  Cumulative time (actual - target engine speed) < 100 rpm	≥ 2 seconds
  Cumulative time (engine speed < target idle speed)	≥ 2 seconds