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 |
|---|---|
| The number of times that the rear oxygen sensor voltage changed to 0.3 V after the fuel cut has completed (time counter) | > 120 s |
| 32 ms X 3750 time(s) |
Time Needed for Diagnosis: 120 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.