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Home >> Scion >> 2009 >> xD Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> OEM System Circuits >> Engine Control >> System Outline >> Fail-Safe

System Outline: Fail-Safe

When the ECM detects an abnormality in the sensor signals, this system either stops the engine or assumes control of it by using standard values stored in the ECM.