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Home >> Lexus >> 2007 >> IS 350 >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM System Circuits >> EPS >> System Outline

System Outline

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* To reduce driver's steering force, assist current is calculated from torque sensor signal and vehicle speed signal to output them to the motor.

* When abnormality is found in the system, the power relay and motor relay (Built in the ECU) are shut off to stop the assistance and the warning lamp (P/S) illuminates in the meter.