Diagnostic Method
Detect the trouble by calculating the time from the completion of the fuel cut to the beginning of the rear oxygen sensor voltage starting 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 | < 0.2 V |
| Elapsed time* | > Value from Map |
*Elapsed time: The time since the λ became less than 1 after the end of fuel cut
AMOUNT OF INTAKE AIR SPECIFICATION - MAP (EXCEPT FOR TYPE RA)
| Amount of intake air (g/s (oz/s)) |
6 (0.21) | 8 (0.28) | 27.99 (0.99) | 28 (0.99) | 40 (1.41) | 45 (1.59) | 50 (1.76) | 60 (2.12) |
|---|---|---|---|---|---|---|---|---|
| Elapsed time (ms) |
100000 | 100000 | 100000 | 6500 | 5000 | 5000 | 5000 | 5000 |
AMOUNT OF INTAKE AIR SPECIFICATION - MAP (TYPE RA)
| Amount of intake air (g/s (oz/s)) |
28 (0.99) | 40 (1.41) | 45 (1.59) |
|---|---|---|---|
| Elapsed time (ms) |
6500 | 5000 | 5000 |
Time needed for diagnosis: Less than 1 s
Malfunction indicator light illumination: Illuminates as soon as a malfunction occurs.