Malfunction Criteria

Decay slope, (beginning at decay start threshold 10 in. H2O

and lasting for decay time 360 s)

minus the larger vapor correction term,

(purge leak vapor term

OR Post decay vapor term)

greater than a threshold, the product of a base term>

using fuel level AND a temperature bias term) x

AND

All 5 count

segment slopes greater than their threshold, the product of a base term> AND a temperature bias term) x

AND a segment bias term) x AND The current segment slope minus the prior segment slope

less than the convex threshold < 0.0195