Diagnostic Method 1: Notes
Detect the malfunction by checking "Cumulative value of time when λ changes from lean → rich" in comparison to "Time during which diagnosis is in progress".
Judge as NG when the following conditions are established.
Diagnosis (CVT model)
MALFUNCTION CRITERIA
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| (Cumulative value of time when λ changes from lean → rich)/(Time during which diagnosis is in progress) | < 0.39 | P014C |
| and | ||
| Average value of time necessary for λ to inverse the air fuel ratio to Lean → Rich → Lean | < 30 ms | |
| (Cumulative value of time when λ changes from rich → lean)/(Time during which diagnosis is in progress) | > 0.63 | P014D |
| and | ||
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich > | 20 ms |