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Section 71 (Engine General Information And Diagnosis)
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General Description
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OBD System Description - Catalyst Monitor (EVAP Leak Check Model)
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Catalyst System Layout
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Catalyst System Layout
WARNING:
This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
The system has A/F sensor and HO2S located upstream and downstream of WU-TWC as shown in figure.
Fig 1: Identifying Catalyst System Layout
Courtesy of SUZUKI OF AMERICA CORP.