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. | > 200 ms (except for PZEV model) > 500 ms (PZEV model) |
P015A |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | > 250 ms (except for PZEV model) > 400 ms (PZEV model) |
P015B |
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. | ≥ 200 ms (except for PZEV model) ≥ 500 ms (PZEV model) |
P015A |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | ≥ 250 ms (except for PZEV model) ≥ 400 ms (PZEV model) |
P015B |
Time Needed for Diagnosis: 50 times of inversion