Diagnostic Method
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Detect a malfunction by measuring the rear oxygen sensor response time during fuel cut.
Judge as NG when the following conditions are established.
JUDGMENT VALUE SPECIFICATIONS
| Malfunction Criteria | Threshold Value |
|---|---|
| Time needed for rear oxygen sensor voltage to change from 0.5V to 0.2V | More than 2000 ms |
Time needed for diagnosis: Less than 1 s
Malfunction indicator light illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.