Wireless Door Lock Control System (W/O Smart Key System) System Description

Vehicle Interior. Corolla. Zre142 Aze141
Door Lock. Corolla. Zre142 Aze141

  1. WIRELESS DOOR LOCK CONTROL SYSTEM

  1. FUNCTION OF MAIN COMPONENTS

  1. SYSTEM FUNCTION

  1. TRANSMITTER RECOGNITION CODE REGISTRATION FUNCTION

  1. CONDITIONS THAT WIRELESS FUNCTIONS DO NOT OPERATE

Wireless Door Lock Control System (W/O Smart Key System) -- System Description



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 hand-held 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.

FUNCTION OF MAIN COMPONENTS

Component
Function
Door control transmitter
  1. Has LOCK, UNLOCK, LUGGAGE OPEN and PANIC switches.
  2. Transmits weak radio waves (recognition codes and function codes) to the door control receiver.
  3. 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.
  1. Front door courtesy light switch
  2. Rear door courtesy light switch
  3. Luggage compartment door courtesy light switch
Turns on when a door is opened and turns off when it is closed. Outputs door status codes (open or closed) to the main body ECU.
Unlock warning switch
Detects if the key is inserted in the ignition key cylinder or not.
Door lock position 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.

SYSTEM FUNCTION
The door control transmitter has the LOCK, UNLOCK, LUGGAGE OPEN 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 (COROLLA_ZRE142 RM000001NN0043X.html).

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's door is unlocked.
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.
Luggage compartment door open
Pressing the LUGGAGE OPEN switch of the transmitter opens the luggage compartment door.
Answer back
  1. When the doors are locked by wireless operation, the hazard warning lights flash once, and wireless door lock buzzer sounds once.
  2. When the doors are unlocked by wireless operation, the hazard warning lights flash twice and wireless door lock buzzer sounds twice.
  3. When the luggage compartment door is opened by wireless operation, the wireless door lock buzzer sounds.
Panic alarm
Pressing the PANIC switch of the transmitter for longer than about 0.8 seconds causes the following alarms to activate:
  1. Sounds the horn.
  2. Flashes the hazard lights.
  3. Illuminates the front interior lights (when the switch is in the DOOR position).
While the panic alarm is operating, pressing any switch of the transmitter cancels the alarm operation.
Door ajar warning
The buzzer sounds when the LOCK switch is pressed when any of the doors are ajar, and it sounds for 10 seconds continuously. The buzzer stops when all doors are closed or the UNLOCK switch is pressed.
Illuminated entry
When all the doors are locked, pressing UNLOCK switch causes the interior lights to come on simultaneously with the unlock operation.
Self-diagnostic mode
The following are conditions to enter the self-diagnostic mode:
  1. 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 lights and sounds the wireless door lock buzzer in a normal pattern that corresponds to the function of each switch.
  2. Read DTCs using the Techstream.
Transmitter recognition code registration
Enables the registration (writing and storing) of 6 types of transmitter recognition codes in the EEPROM that is contained in the door control receiver.

TRANSMITTER RECOGNITION CODE REGISTRATION FUNCTION
The table below shows the 4 ID registration function modes by which up to 6 different codes can be registered. 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 number of registered codes exceeds 6, the oldest registered code is erased first.
Rewrite mode
Erases 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.

CONDITIONS THAT WIRELESS FUNCTIONS DO NOT OPERATE

  1. Lock function will not operate when:

    1. Any of the doors is open.
    2. The key is inserted in the ignition key cylinder.

  2. Unlock function will not operate when:

    1. The key is inserted in the ignition key cylinder.