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Home >> Lexus >> 2015 >> IS 250 Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (4GR-FSE) - Diagnostic Codes (5 Of 5) & Circuit Tests >> SFI System >> Starter Signal Circuit [04/2013 - 08/2015] >> Description
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Starter Signal Circuit [04/2013 - 08/2015]: Description

While the engine is being cranked, current flows from terminal STAR of the certification ECU (smart key ECU assembly) to the park/neutral position switch assembly and to terminal STA of the ECM (STA signal).