Mazda 2002 6 Workshop Manual page 157

Upstream HO2S graph line example
Downstream HO2S graph line example 1
Equation
RATIO = 30 inversions (upstream HO2S
inversions) ÷ 5 inversions (downstream
HO2S inversions) = 6.0 (good WU-TWC)
Downstream HO2S graph line example 2
Downstream HO2S graph line example 3
Equation
RATIO = 30 inversions (upstream HO2S
inversions) ÷ 27 inversions (downstream
HO2S inversions) = 1.1 (bad converter)
End Of Sie
F–42
EMISSION SYSTEM
A6E3916W021
A6E3916W012
A6E3916W014
A6E3916W015