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Section 148 (2AZ-FE Engine Control System - SFI System Precautions And Diagnostic Introduction, Problem Symptoms Table, Diagnostic Trouble Code Chart)
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SFI System
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System Diagram
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System Diagram
WARNING:
This page is about a different car, the 2008 Scion xB. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control System Diagram (1 Of 3)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Engine Control System Diagram (2 Of 3)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Engine Control System Diagram (3 Of 3)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002