FixVault
Home › Lexus › 2008 › LX 570 › Repair and Diagnosis › Body & Frame › Door Locks › Door Lock › Power Door Lock Control System › System Description

System Description

  1. FUNCTION OF MAIN COMPONENT 
    FUNCTION OF MAIN COMPONENT

    Components Function
    Master switch The door control switch on the master switch locks/unlocks all doors.
    Door control switch Locks/unlocks all doors
    Door courtesy light switch Turns on when the door is open and off when the door is closed Outputs the door status (open or closed) to the main body ECU
    Front door lock LH
    • The built-in motor locks/unlocks the door
    • The built-in door control switch position (key-linked) detects the door key cylinder status (lock or unlock) and outputs the data to the main body ECU
    • The built-in position switch detects the door status (locked or unlocked) and outputs the data to the main body ECU This switch turns off when the door is locked and on when the door is unlocked
    Front door lock RH
    Rear door lock LH
    Rear door lock RH
    • The built-in motor locks/unlocks the door.
    • The built-in position switch detects the door status (locked or unlocked) and outputs the data to the main body ECU This switch turns off when the door is locked and on when the door is unlocked
    Back door lock
    • The built-in motor opens the door (1)
    • The built-in motor opens/closes the door (2)
    • Performs the back door open operation according to the door position determination of the main body ECU (1)
    • Performs the back door open/close operation according to the door position as determined by the power back door ECU (2)
    (1) w/o Power Back Door

    (2) w/ Power Back Door
  2. SYSTEM DESCRIPTION 
    1. The power door lock system locks/unlocks all doors.
      • The door control switch of the master switch uses the LIN line to send lock/unlock request signals to the main body ECU.
      • The driver door key cylinder lock/unlock request signals are sent to the main body ECU from the front door lock LH.
      • The passenger door control switch lock/unlock request signals are sent to the main body ECU from the front door lock RH.
      • The main body ECU receives the request signals and locks/unlocks each door.

      The door control system has the following functions:

    FUNCTION OF MAIN COMPONENT

    Function Outline
    Manual lock and unlock function Locks/unlocks all doors by the door control switch lock operation (manual operation)
    Key-linked lock and unlock function Linked with the door key cylinder.
    Locks/unlocks all doors when the lock/unlock operation is possible
    Key lock-in prevention function When the door control transmitter is in the vehicle, performing the door lock operation with the lock switch on the outer handle will not lock the door and will sound a buzzer
    Collision door lock release If the SRS has been deployed and the main body ECU has detected the signal that is output from the airbag sensor, the main body ECU will unlock all doors
    2-step unlock function Unlocks only the driver side door by turning the key cylinder once and unlocks the other doors by turning it twice
    Shift-linked automatic door lock When the conditions listed below are all met, this function causes all doors to automatically lock.
    • The engine switch is on (IG)
    • All doors are closed
    • The shift lever is moved out of P
    Shift-linked automatic door unlock When the engine switch is on (IG), when moving the shift lever is moved to P from any other position, all the doors will be automatically unlocked
    Speed-sensitive automatic door lock(1) When the doors are unlocked and the vehicle reaches a speed of 20 km/h (12 mph) or more, all doors are locked
    Door open-linked automatic door unlock(1) When the driver side door is opened within 10 seconds after the engine switch is turned off, the other doors are unlocked
    (1) This function is set through the customize function, as it is off by default.
About FixVault