Diagnostic Method
- Abnormality Judgment
Compare the diagnosed value (fsobd) with the threshold value, and if a condition meeting the malfunction criteria below continues for 10 s x 5 time(s) or more, judge that there is a fault in the fuel system.
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| fsobd = (sglmd - tglmda) + faf + flaf In this case: sglmd = measured lambda tglmda = target lambda faf = Main feedback compensation coefficient (every 64 ms) flaf = main feedback learning compensation coefficient |
< Value of Map 2 |
MAP 2 REFERENCE CHART
| Amount of air (g (oz)/s) | 0 (0) | 3.2 (0.11) | 6.4 (0.23) | 9.6 (0.34) | 12.8 (0.45) | 16 (0.56) | 19.2 (0.68) |
| fsobdL1 (%) | 0.6 | 0.6 | 0.668 | 0.735 | 0.735 | 0.735 | 0.735 |
Time Needed for Diagnosis: 10 s x 5 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- Normality Judgment
Judge as OK when the malfunction criteria below are met for 10 seconds.
JUDGMENT VALUE CHART
| Malfunction Criteria | Threshold Value |
|---|---|
| fsobd = (sglmd - tglmda) + faf + flaf | ≥ 0.8 |
Time Needed for Diagnosis: 10 s