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Home >> Toyota >> 2003 >> Prius >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P1127: Electronic Throttle Control System Actuator Power Source Circuit >> Circuit Description
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Circuit Description

Constant battery voltage is supplied to +BM terminal of ECM as the power source for the Electronic Throttle Control System (ETCS). If DTC P1127 exists, ECM will turn off the power to throttle control motor and throttle valve is closed by the return spring.