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. | > 150 ms (AT model except for PZEV) > 130 ms (MT model except for PZEV) > 150 ms (PZEV AT model) > 170 ms (PZEV MT model) |
P015A |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | > 350 ms (AT model except for PZEV) > 170 ms (MT model except for PZEV) > 200 ms (PZEV AT model) > 150 ms (PZEV MT 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. | ≤ 150 ms (AT model except for PZEV) ≤ 130 ms (MT model except for PZEV) ≤ 150 ms (PZEV AT model) ≤ 170 ms (PZEV MT model) |
P015A |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. | ≤ 350 ms (AT model except for PZEV) ≤ 170 ms (MT model except for PZEV) ≤ 200 ms (PZEV AT model) ≤ 150 ms (PZEV MT model) |
P015B |
Time Needed for Diagnosis: 50 times of inversion