Diagnostic Method 2

Detect the malfunction by calculating the average amplitude of λ.

Fig 1: Average Amplitude Graph

Courtesy of SUBARU OF AMERICA, INC.

• Abnormality Judgment 

  Judge as NG when the following conditions are established.

  JUDGMENT VALUE CHART
  
  

  Malfunction Criteria	Threshold Value	DTC
  Average value for λ amplitude	> 0.06 (Bin5 model) > 0.07 (ULEV model)	P015A, P015B, P015C and P015D

  Time Needed for Diagnosis:  60 seconds

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

• Normality Judgment 

  Judge as OK and clear the NG if the following conditions are established.

  JUDGMENT VALUE CHART
  
  

  Malfunction Criteria	Threshold Value	DTC
  Average value for λ amplitude	≤ 0.06 (Bin5 model) ≤ 0.07 (ULEV model)	P015A, P015B, P015C and P015D

  Time Needed for Diagnosis:  60 seconds