Diagnostic Method
Detect a malfunction by measuring the time from fuel cut completed until the rear oxygen sensor voltage begins to rise.
Judge as NG when the following conditions are established.
JUDGMENT VALUE SPECIFICATION
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage value of rear oxygen sensor | Less than 0.2 V |
| Elapsed time* | More than value of Map |
*: The time since the λ became less than 1 after the end of fuel cut
MAP SPECIFICATION
| Amount of intake air (g/s (oz/s)) | 30 (1.1) | 32 (1.1) | 40 (1.4) | 45 (1.6) |
|---|---|---|---|---|
| Elapsed time (ms) | 4000 | 3500 | 3500 | 3500 |
Time needed for diagnosis: Less than 1 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.