Diagnostic Method
Detect a malfunction by measuring the time from the beginning of the fuel cut until the rear oxygen sensor voltage starts to drop.
Judge as NG when the following conditions are established.
JUDGMENT VALUE SPECIFICATION SPECIFICATION
| Malfunction Criteria | Threshold Value |
|---|---|
| Time needed for the rear oxygen sensor voltage to change up to 0.5 V after the fuel cut started | More than 4500ms |
Time needed for diagnosis: Less than 1 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.