Diagnostic Method

Abnormality Judgment
Judge NG when either Low side or High side becomes NG. Judge NG when the continuous time of completing the malfunction criteria below becomes more than the predetermined time.
Judgment Value

Fig 1: Threshold Valve Table (1 Of 2)
Courtesy of SUBARU OF AMERICA, INC.

Time Needed for Diagnosis: Low side 3 seconds, high side 7 seconds

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
Judge OK and clear the NG when both Low side and High side become OK. Judge OK when the malfunction criteria below are completed.
Judgment Value

Fig 2: Threshold Valve Table (2 Of 2)
Courtesy of SUBARU OF AMERICA, INC.