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Home >> Lexus >> 2002 >> IS 300 Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission Shift Interlock Systems) >> Description & Operation >> Shift Interlock System
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Shift Interlock System

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With ignition on and brake pedal depressed, an input signal is sent from brakelight switch to ECU. With gearshift lever in Park, an input signal from shift control switch is input to ECU, indicating gearshift lever is in Park. ECU then operates shift interlock solenoid, allowing gearshift lever movement from Park.