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
ABNORMALITY JUDGMENT AND THRESHOLD VALUEMalfunction 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
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
NORMALITY JUDGMENT AND THRESHOLD VALUEMalfunction Criteria Threshold Value Output voltage level High Time Needed for Diagnosis: Less than 1 second