Diagnostic Method

• Abnormality Judgment 

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

• Judgment Value 
  JUDGMENT VALUE (ABNORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  Impedance of front oxygen (A/F) sensor	< 10 Ω or >40 Ω

Time Needed for Diagnosis:  10 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

• Normality Judgment 

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

• Judgment Value 
  JUDGMENT VALUE (NORMALITY JUDGMENT)
  
  

  Malfunction Criteria	Threshold Value
  Impedance of front oxygen (A/F) sensor	10 Ω - 40 Ω