Diagnostic Method

• Abnormality Judgment 

  Judge NG when the continuous time of completing all the malfunction criteria below becomes more than the time (10 seconds) needed for diagnosis

• Judgment Value 
  JUDGMENT VALUE (ABNORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  A/F sensor output (VAF)	> 2.3 V (lean)
  Lambda fudge factor (LAMBDA)	= Rich clamp at MAX limiter (1.375)

Time Needed for Diagnosis  : 10 seconds

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

• Normality Judgment 

  Judge OK when the cumulative time until completing all the malfunction criteria below becomes more than the time (10 seconds) needed for diagnosis

• Judgment Value 
  JUDGMENT VALUE (NORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  A/F sensor output (VAF)	≤ 2.3 V