Diagnostic Method
- Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | Low |
| Front oxygen (A/F) sensor heater control duty | < 87.5 % |
Time Needed for Diagnosis: 4 ms x 250 time(s)
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
- Normality Judgment
Judge as OK and clear the NG if the continuous time while the following conditions are established is more than the predetermined time.
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| Output voltage level | High |
Time Needed for Diagnosis: Less than 1 second