Outline Of Diagnosis

Detect the malfunction of air flow sensor output properties.

Judge as NG on the Low side when the displayed value of air flow voltage is small even in a driving condition where it should be large. Judge as NG on the High side when the displayed value of air flow voltage is large even in a driving condition where it should be small. Judge as NG in the air flow sensor property when either the Low side or High side becomes NG.