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 or more, judge that there is a fault in the fuel system.
Judgment Value
MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCEMalfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flaf
In this case: sglmd = measured lambda
tglmda = target lambda
faf = main feedback compensation coefficient every 64 milliseconds
flaf = main feedback learning compensation coefficient≥ Value of Map 2 Map2
AIR AMOUNT SPECIFICATIONSAmount 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 (%) 1.4 1.4 1.332 1.265 1.265 1.265 1.265 Time Needed for Diagnosis: 10 s x 5 time
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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
MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCEMalfunction Criteria Threshold Value fsobd = (sglmd - tglmda) + faf + flaf < 1.2 Time Needed for Diagnosis: 10 s