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Home >> Toyota >> 2013 >> Prius Four >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Power Door Lock Control System (Diagnostics & Symptom Tests) (Except Plug-In) >> Power Door Lock Control System >> System Description >> System Description
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System Description

  1. POWER DOOR LOCK CONTROL SYSTEM DESCRIPTION 
    1. The power door lock system locks/unlocks all doors.

      The driver and front passenger door control switches send lock/unlock request signals to the main body ECU (multiplex network body ECU). Then, the main body ECU (multiplex network body ECU) sends these request signals to the door lock motors in each door to lock/unlock all doors at once in response to the inputs.

      Operating the driver door lock using a mechanical key sends request signals to lock or unlock the doors to the main body ECU (multiplex network body ECU).

  2. FUNCTION OF MAIN COMPONENTS 
    Component Function
    Multiplex network master switch assembly Driver door control switch on multiplex network master switch assembly locks or unlocks all doors.
    Door control switch assembly Front passenger door control switch assembly locks or unlocks all doors.
    Door courtesy light switch assembly
    • Placed on each door.
    • Detects door status (open or closed) and outputs data to main body ECU (multiplex network body ECU).
    • Turns on when door is opened and turns off when door is closed.
    Front door lock assembly (for driver side)
    • Built-in motor locks or unlocks door.
    • Built-in door control switch (key-linked) detects door key operation status (locked or unlocked) and outputs a signal to main body ECU (multiplex network body ECU).
    • Built-in position switch detects door status (locked or unlocked) and outputs a signal to main body ECU (multiplex network body ECU). This switch turns off when door is locked and turns on when door is unlocked.
    Front door lock assembly (for front passenger side)
    Rear door lock assembly LH/RH
    • Built-in motor locks or unlocks door.
    • Built-in position switch detects door status (locked or unlocked) and outputs a signal to main body ECU (multiplex network body ECU). This switch turns off when door is locked and turns on when door is unlocked.
    Back door lock assembly
    • Built-in motor opens door latch.
    • Performs back door open operation according to locked/unlocked state determination of main body ECU (multiplex network body ECU).
  3. SYSTEM FUNCTION 
    1. This system is controlled by the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) outputs signals to each door lock motor. The power door lock control system has the following functions:
      Function Outline
      Manual lock and unlock function This function can lock or unlock all doors by the door control switch operation.
      Key-linked lock and unlock function This function, which is linked with the mechanical key cylinder, can lock or unlock all doors when a lock or unlock operation is effected.
      Manual unlock prohibition function When the condition below is met, unlocking the vehicle using the door control switch will be prohibited.
      • The doors are locked using a mechanical key, door control transmitter or entry lock operation with all doors closed.
      Key lock-in prevention function When the key is in the vehicle, performing the door lock operation will not lock the door.
      Key-linked 2-step unlock function Unlocks only the driver door by turning the key cylinder once and unlocks the other doors by turning it twice.
      Shift-linked automatic door lock function*2 When the conditions listed below are met consecutively, this function causes all doors to be automatically locked:
      • All doors are closed.
      • The hybrid vehicle control system is started.
      • The shift lever is moved to any position.
      Shift-linked automatic door unlock function When the conditions listed below are met consecutively, this function causes all doors to be automatically unlocked:
      • The power switch is on (IG).
      • Push the P position switch.
      Speed-sensitive automatic door lock function*3 When the conditions listed below are met consecutively, this function causes all doors to be automatically locked:
      • All doors are closed.
      • Any of the doors is unlocked.
      • Vehicle speed is higher than approximately 20 km/h (12 mph).
      Opening driver door-linked automatic door unlock*4 All doors are unlocked automatically when the driver door is opened within 10 seconds after the power switch is turned from on (IG) to off.
      • *2: Default setting for Korea is OFF.
      • *3: Default setting for except Korea is OFF.
      • *4: Default setting is OFF.