Power Door Lock Control System System Description

  1. POWER DOOR LOCK CONTROL SYSTEM DESCRIPTION

  1. FUNCTION OF MAIN COMPONENTS

  1. SYSTEM FUNCTION

Power Door Lock Control System -- System Description



POWER DOOR LOCK CONTROL SYSTEM DESCRIPTION

  1. The power door lock system locks/unlocks all the doors.
    The driver and front passenger side 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 the 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).


FUNCTION OF MAIN COMPONENTS

Component
Function
Multiplex network master switch assembly
Driver side door control switch on the master switch locks or unlocks all doors.
Door courtesy light switch assembly
  1. Located on each door.
  2. Detects the door status (open or closed) and outputs data to the main body ECU (multiplex network body ECU).
  3. Turns on when the door is opened and turns off when the door is closed.
Front door lock assembly (driver side)
  1. Built-in motor locks or unlocks the door.
  2. Built-in door control switch (key-linked) detects the door key cylinder operation status (locked or unlocked) and outputs a signal to the main body ECU (multiplex network body ECU).
  3. Built-in position switch detects door the status (locked or unlocked) and outputs a signal to the main body ECU (multiplex network body ECU). This switch turns off when the door is locked and turns on when the door is unlocked.
  4. Built-in double lock motor sets / unsets double locking system*2
  5. Built-in double lock position switch detects double locking system status (set or unset) and outputs data to the double door lock control relay. This switch turns off when system is set and turns on when system is unset.*2
Front door lock assembly (front passenger side)
Rear door lock assembly LH/RH*1
  1. Built-in motor locks or unlocks the door.
  2. Built-in position switch detects the door status (locked or unlocked) and outputs a signal to the main body ECU (multiplex network body ECU). This switch turns off when the door is locked and turns on when the door is unlocked.
  3. Built-in double lock motor sets / unsets double locking system*2
  4. Built-in double lock position switch detects double locking system status (set or unset) and outputs data to the double door lock control relay. This switch turns off when system is set and turns on when system is unset.*2
Back door lock assembly
  1. Built-in motor opens the door.
  2. Performs the back door open operation according to the door position determined by the main body ECU (multiplex network body ECU).
  3. Performs back door open operation according to door position determination of main body ECU (multiplex network body ECU).
Main body ECU (multiplex network body ECU)
Detects the vehicle condition based on the signals from each switch, the vehicle speed signal, airbag operation signal, etc. and controls the power door lock system. Sends lock/unlock signals to each door lock assembly to operate the door lock motors.
Combination meter assembly*2
Calculates the vehicle speed based on the signal from the skid control ECU and sends the vehicle speed information to the main body ECU (multiplex network body ECU) via CAN communication.
Double lock door control relay assembly*3
Receives the signal from the main body ECU (multiplex network body ECU) via LIN communication and operates each door lock motor.
  1. *1: for 5 Door
  2. *2: w/ Speed-sensitive Automatic Door Lock Function
  3. *3: w/ Double Locking System

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 door lock control system of the vehicle has the following functions:

    Function
    		Outline
    Manual lock and unlock function
    		This function locks or unlocks all doors according to the door lock control switch operation.
    Key-linked lock and unlock function
    		This function, which is linked with the mechanical key cylinder, locks or unlocks all doors when a lock or unlock operation is performed.
    Key lock-in prevention function
    		When the key is in the vehicle, this function prevents the door lock operation performed with the lock switch on the outer handle from locking the door.
    Collision door lock release*3
    		If the SRS has been deployed and the main body ECU (multiplex network body ECU) has detected the signal that is output from the airbag sensor, the main body ECU (multiplex network body ECU) will unlock all doors.
    Key-linked 2-step unlock function*1
    		Unlocks only the driver door when the key cylinder is turned once and unlocks the other doors when the key cylinder is turned twice.
    Shift-linked automatic door lock function*1, *4
    		When the conditions listed below are met consecutively, this function causes all doors to be automatically locked.
    1. All doors are closed.
    2. The shift lever is moved out of P.
    Shift-linked automatic door unlock function*1, *5
    		When the conditions listed below are met consecutively, this function causes all doors to be automatically unlocked.
    1. The ignition switch is ON.
    2. The shift lever is moved to P from any position other than P.
    Speed-sensitive automatic door lock function*3
    		When the conditions listed below are met consecutively, this function causes all doors to be automatically locked.
    1. Vehicle speed is higher than approximately 20 km/h (12 mph).
    2. All doors are closed.
    3. Any of the doors is unlocked.
    Driver door-linked automatic door unlock function*1, *6
    		All doors are unlocked automatically when the driver door is opened within 43 seconds after the ignition switch is turned from ON to off.
    Double locking function*2
    1. This function prevents the doors from being opened through the operation of the inside door knobs. Thus, the doors cannot be opened either from the inside or the outside of the vehicle.
    2. Pressing the transmitter lock switch twice within 5 seconds or touching the lock sensor on the outside door handle twice within 5 seconds while holding the key activates the double locking function. In an emergency, the driver door can be unlocked with a key, but the other doors cannot be unlocked.
    NOTICE:
    Never activate the double locking function when there are people in the vehicle because the doors cannot be opened from the inside. If the doors are locked by accident, unlock the door by using the wireless unlock operation or entry unlock operation.

    1. *1: Default setting is OFF.
    2. *2: w/ Double Locking System
    3. *3: w/ Speed-sensitive Automatic Door Lock Function
    4. *4: w/ Shift-linked Automatic Door Lock Function
    5. *5: w/ Shift-linked Automatic Door Unlock Function
    6. *6: w/ Driver Door-linked Automatic Door Unlock Function