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Home >> Lexus >> 2017 >> GS 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (7 Of 7) & Circuit Tests >> SFI System >> Circuit Tests >> Starter Signal Circuit [10/2015 - ] >> Description
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Starter Signal Circuit [10/2015 - ]: 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).