Abnormality Judgment
Judge that the fuel system malfunction occurs when the time during completing the malfunction criteria below continues 50 seconds or more by comparing the diagnosed value (fsobd) with threshold value.
Judgment Value
JUDGMENT VALUE REFERENCE (ABNORMALITY)
| Malfunction Criteria | Threshold Value |
|---|---|
| fsobd = (sglmd - tglmda) + faf + flaf | </= fsobdR 1 |
| where, | See Map 4 |
| sglmd = measured lambda | FsobdR 1 = rich side threshold value of fsobd |
| tglmda = target lambda | |
| faf = main feedback compensation coefficient every 64 milliseconds | |
| flaf = main feedback learning compensation coefficient |
Map 4 Threshold value for fuel system malfunction criteria
MAP 4 THRESHOLD VALUE FOR FUEL SYSTEM MALFUNCTION CRITERIA
| Amount of air [g (oz)/s] | 0(0) | 3.2 (0.113) | 6.4 (0.226) | 9.6 (0.339) | 12.8 (0.451) | 11.7 (0.413) | 19.2 (0.677) |
| fsobdR 1 (%) | -40 | -40 | -33.2 | -26.5 | -26.5 | -26.5 | -26.5 |
Time Needed for Diagnosis: 10 seconds x 50 times
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.