Diagnostic Method 1
Detect the malfunction depending on the average value of time necessary for A to inverse the air fuel ratio from "Lean - Rich - Lean" to "Rich - Lean - Rich".
Judge as NG when the following conditions are established.
JUDGMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Average value of time necessary for λ to inverse the air fuel ratio to Lean - Rich - Lean and | > 500 ms | P015A |
| Average value when λ is lean | > 600 ms | |
| Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich and Average value when λ is rich |
> 500 ms > 600 ms (CVT model) > 140 ms (MT model) |
P015B |
Time needed for diagnosis:
120 s (CVT model)
90 s (MT model)
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.