WIRELESS DOOR LOCK CONTROL SYSTEM SYSTEM DESCRIPTION


  1. WIRELESS DOOR CONTROL SYSTEM DESCRIPTION


    1. This system locks and unlocks the vehicle's doors remotely. The wireless control system has the following functions and features:


      • The door control receiver performs the code identification process and the body ECU operates the door lock control. A serial data link is provided for communication between the door control receiver and the body ECU.

      • A key-integrated type transmitter is used and it has a door lock switch and door unlock switch.

    2. The wireless door lock control system has the following functions:

      Function Outline
      All door lock operation Pressing the LOCK switch locks all doors when all doors are closed.
      All door unlock operation Pressing the UNLOCK switch unlocks all doors.
      Automatic lock function If any of the doors is not opened within 30 seconds after they are unlocked by the wireless operation, all doors will lock again automatically.
      Answer back operation Hazard warning lights flash once when the doors are locked, and flash twice when the doors are unlocked. These flashes indicate completion of operation.
      Repeat function If any door is not locked in response to the locking operation by the LOCK switch, the body ECU will output a lock signal after 1 second.

  2. OPERATION INTERLOCK FUNCTION


    1. Lock operation is not available when:


      • Any of the doors is open.


      • The key is in the ignition switch cylinder.

    2. Unlock operation is not available when:


      • The key is in the ignition switch cylinder.

  3. FUNCTION OF MAIN COMPONENTS

    Components Functions
    Door control transmitter

    • Contains the lock and unlock switches.

    • Transmits weak electric waves (recognition codes and function codes) to the door control receiver.

    • Illuminates the indicator light (LED) during transmission.
    Door control receiver Receives weak electric waves (recognition codes and function codes) and outputs them as code data to the body ECU.

    • Front door courtesy light switch

    • Rear door courtesy light switch

    • Back door courtesy light switch

    		 Turns on when a door is opened and off when a door is closed. Outputs door status (open or closed) to the body ECU.
    Unlock warning switch Detects whether the key is (not) inserted in the ignition switch.
    Door lock position switch Transmits the door lock positions of each door to the body ECU.
    Body ECU Transmits wireless door lock control signals in response to the code data from the door control receiver and signals from each switch.

  4. TRANSMITTER RECOGNITION CODE REGISTRATION FUNCTION

    The table below shows the 4 special coded ID registration function modes through which up to 4 different codes can be registered. The codes are electronically registered (written to and stored) in the EEPROM that is contained in the body ECU.

    Mode Function
    Add mode

    Adds a newly received code while preserving any previously registered codes.

    The mode is used when adding a new transmitter. If the number of codes exceeds 4, the oldest registered code is erased first.
    Rewrite mode Erases all previously registered codes and registers only the newly received codes.
    Confirmation mode Confirms how many codes are currently registered. When adding a new code, this mode is used to check how many codes already exist.
    Prohibition mode

    Prohibits the wireless door lock function to delete all the registered codes.

    This mode is used when the transmitter is lost.