Diagnostic Method 1
Detect the malfunction depending on the average value of time necessary for λ to inverse the air fuel ratio from "Lean → Rich → Lean" to "Rich → Lean → Rich".
- Abnormality Judgment
Judge as NG when the following conditions are established.
JUDGMENT VALUE
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value of time necessary for λ to inverse the air fuel ratio to Lean → Rich → Lean. | > 190 ms (Bin5 model) | P015A |
| > 450 ms (ULEV model) | P015C | |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | > 900 ms | P015B P015D |
Time Needed for Diagnosis: 50 times of inversion
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
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value of time necessary for λ to inverse the air fuel ratio to Lean → Rich → Lean. | ≤ 190 ms (Bin5 model) | P015A |
| ≤ 450 ms (ULEV model) | P015C | |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | ≤ 900 ms | P015B P015D |
Time Needed for Diagnosis: 50 times of inversion