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System Description

  1. WIRELESS DOOR LOCK CONTROL SYSTEM 

    The wireless door lock control system functions to lock and unlock all the doors from a distance. The system is controlled by a door control transmitter which sends radio waves to the door control receiver. The main body ECU performs an ID code identification process and engages the door lock.

  2. FUNCTION OF MAIN COMPONENTS 
    Component Function
    Door control transmitter
    • Has LOCK, UNLOCK and PANIC switches.
    • Transmits weak radio waves (recognition codes and function codes) to the door control receiver.
    • Illuminates the indicator light (LED) during transmission.
    Door control receiver Receives weak radio waves (recognition codes and function codes) and outputs them as code data to the main body ECU.
    • Front door courtesy light switch
    • Back door courtesy switch
    		 Turns on when a door is opened and turns off when it is closed. Outputs door status signals (open or closed) to the main body ECU.
    Unlock warning switch assembly Detects if the key is inserted in the ignition key cylinder or not.
    Door unlock detection switch Transmits the door lock positions of each door to the main body ECU.
    Main body ECU Sends wireless door lock control signals in response to the code data from the door control receiver and signals from each switch.
  3. SYSTEM FUNCTION 

    The door control transmitter has the LOCK, UNLOCK and PANIC switches. Operating these switches activates each function. The wireless door lock control system has the following functions:

    HINT: 

    The default settings of the following functions are on. Some of these functions can be customized. Refer to CUSTOMIZE PARAMETERS .

    Function Operation
    All door lock Pressing the LOCK switch locks all doors.
    All door unlock
    (Unlock 2 operation)    		 Pressing the UNLOCK switch twice within 3 seconds unlocks all the doors after the driver door is unlocked.
    Answer-back
    • When the doors are locked by wireless operation, the hazard warning lights flash once.
    • When the doors are unlocked by wireless operation, the hazard warning lights flash twice.
    Automatic lock If none of the doors is opened within 60 seconds after they are unlocked by the wireless door lock control, all the doors will lock again automatically.
    Panic alarm Pressing the PANIC switch of the transmitter for longer than about 0.8 seconds causes the following alarms to activate:
    • Sounds the horn.
    • Flashes the headlights, taillights and hazard warning lights.
    • Illuminates the interior light (when the switch is in the DOOR position).

    While the panic alarm is operating, pressing any switch of the transmitter cancels the alarm operation.
    Illuminated entry When all the doors are locked, pressing UNLOCK switch causes the interior light to come on simultaneously with the unlock operation.
    Self-diagnostic mode The following are conditions to enter the self-diagnostic mode:
    • If the door control receiver receives normal radio waves from the door control transmitter when the system is in diagnostic mode, it flashes the interior light in a normal pattern that corresponds to the function of each switch.
    • Read DTCs using the Techstream.
    Transmitter recognition code registration Enables the registration (writing and storing) of transmitter recognition codes in the EEPROM that is contained in the door control receiver.
  4. TRANSMITTER RECOGNITION CODE REGISTRATION FUNCTION 

    The table below shows the 4 ID registration function modes. The codes are electronically registered (written and stored) in the EEPROM that is contained in the door control receiver.

    Mode Function
    Add mode Adds a newly received code while preserving any previously registered codes.
    This mode is used when adding a new transmitter. If the maximum registration number is exceeded, the oldest one is cleared first.
    Rewrite mode Clears all previously registered codes and registers only newly input 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 Deletes all the registered codes and disables the wireless door lock function.
    This mode is used when the transmitter is lost.
  5. CONDITIONS THAT WIRELESS FUNCTIONS DO NOT OPERATE 
    1. Lock function will not operate when either of the following conditions is met:
      • Any of the doors is open.
      • The key is inserted in the ignition key cylinder.
    2. Unlock function will not operate when the following condition is met:
      • The key is inserted in the ignition key cylinder.
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