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Home >> Scion >> 2009 >> xB Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Key Reminder Warning System >> System Description

System Description

  1. KEY REMINDER WARNING SYSTEM DESCRIPTION 
    1. When the driver side door is opened with the ignition key in the ACC or LOCK position, this system causes a buzzer to sound in order to warn the driver that the ignition key has not been removed.
  2. FUNCTION OF MAIN COMPONENT 
    FUNCTION OF MAIN COMPONENT

    Component Function
    Front Door Courtesy Light Switch LH Detects front door status (open or closed) and outputs signal to main body ECU
    Unlock Warning Switch Detects if key is inserted into ignition key cylinder or not and outputs signal to main body ECU
    Combination Meter Receives buzzer request signal from main body ECU after main body ECU receives ignition switch signal and front door courtesy light switch signal and actuates inner circuit to sound built-in buzzer intermittently