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Diagnostic Method

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 from 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 (%) 1.4 1.4 1.332 1.25 1.25 1.25 1.25

Time Needed for Diagnosis:  10 s x 5 time(s)

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

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 CHART

Malfunction Criteria Threshold Value
fsobd = (sglmd - tglmda) + faf + flaf < 1.2

Time Needed for Diagnosis:  10 s