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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 725 (Emission System) >> Warm-Up Three-Way Catalytic Converter (WU-TWC) Inspection >> Downstream HO2S graph line example 3

Downstream HO2S graph line example 3

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Equation 
  2. RATIO = 30 inversions (upstream HO2S inversions) / 27 inversions (downstream HO2S inversions) = 1.1 (bad WU-TWC) 
    Fig 1: Downstream HO2S Graph Line Example 3
    G00973078Courtesy of MAZDA MOTORS CORP.
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