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Home >> Mazda >> 2009 >> 3 Mazdaspeed, 2.3 L >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (L3 With TC) >> Control System Diagram [L3 With TC]
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Control System Diagram [L3 With TC]

IMPORTANT: Be aware that Oxygen sensor terminology differs between California models (3 O2 sensors) and Non-California models (2 O2 sensors). When testing/servicing oxygen sensors, refer to SYSTEM WIRING DIAGRAMS article to properly identify appropriate sensor.
Fig 1: Control System Diagram
G04955291Courtesy of MAZDA MOTORS CORP.