Diagnostic Method
Abnormality Judgment
Judge as NG when either Low side or High side becomes NG.
Judge as NG when the continuous time of completing the malfunction criteria below becomes more than the predetermined time.
Judgment Value
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| Low side | |
| Engine speed | < 2500 rpm |
| Throttle position | ≥ 12° |
| Intake air amount every 0.5 engine revs. | ≥ 0.55 g (0.019 oz./rev |
| Output voltage | < 1.4V |
| High side | |
| Engine speed | 600 - 900 rpm |
| Throttle position | ≤ 2.44° |
| Intake air amount every 0.5 engine revs. | < 0.4g (0.014 oz./rev |
| Output voltage | ≥ 3.4V |
Time Needed for Diagnosis: 3 seconds for low side, 7 seconds for high side
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
Judge as OK and clear the NG when both Low side and High side become OK.
Judge as OK when the malfunction criteria below are completed.
Judgment Value
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| Low side | |
| Engine speed | < 2500 rpm |
| Throttle position | ≥ 12° |
| Intake air amount every 0.5 engine revs. | ≥ 0.55 g (0.019 oz./rev |
| Output voltage | ≥ 1.4V |
| High side | |
| Engine speed | 600 - 900 rpm |
| Throttle position | ≤ 2.44° |
| Intake air amount every 0.5 engine revs. | < 0.4 g (0.014 oz./rev |
| Output voltage | < 3.4V |