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System Diagram

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

EMISSION CONTROL SYSTEM DIAGRAM

Fig 1: Emission Control System Diagram
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EVAP SYSTEM DIAGRAM

Fig 2: EVAP System Diagram
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EMISSION CONTROL WIRING DIAGRAM (Heated Oxygen Sensor Circuit)

Fig 3: Emission Control Wiring Diagram (Heated Oxygen Sensor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
EVAP SYSTEM WIRING DIAGRAM

Fig 4: EVAP System Wiring Diagram
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002