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Judgment Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
fsobd = (sglmd - tglmda) + faf + flaf ≤ fsobdR1
where, See MAP 4 
sglmd = measured lambda fsobdR1 = 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) 16 (0.564) 19.2 (0.677)
fsobdR1 (%) -40 -40 -33.2 -26.5 -26.5 -26.5 -26.5

Time Needed for Diagnosis:  10 seconds x 5 times

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



MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
fsobd = (sglmd - tglmda) + faf + flat ≥ -20%