System Description

WIRELESS DOOR LOCK CONTROL SYSTEM DESCRIPTION
1. The wireless door lock control system locks and unlocks the vehicle doors remotely. This system has the following features:
  - The door control receiver performs the code identification procedure and the main body ECU (multiplex network body ECU) controls the door locks. A serial data link is provided for communication between the receiver and main body ECU (multiplex network body ECU).
  - A key-integrated type transmitter is used and it contains the following 3 switches: the door lock switch, door unlock switch and panic switch.

FUNCTION OF MAIN COMPONENTS

Component	Function
Door control transmitter	Contains the lock, unlock and panic switches. Transmits weak electric waves (recognition codes and function codes) to the door control receiver.
Door control receiver	Receives weak electric waves (recognition codes and function codes) from the door control transmitter and changes the waves to code data.
Front door lock assembly LH, RH (Door lock position switch)	Transmits the door lock positions of each door to the main body ECU (multiplex network body ECU).
Wireless door lock buzzer	Sounds when the door ajar warning function is operating. Sounds when the answer-back function is operating.
Unlock warning switch assembly	Detects if the door control transmitter is in the ignition key cylinder.
Front door courtesy light switch assembly LH Front door courtesy light switch assembly RH	Located on each door. 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 (multiplex network body ECU).
Back door courtesy light switch	Located on the back door lock assembly. 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 (multiplex network body ECU).

SYSTEM FUNCTION

The wireless door lock control system has the following functions.

Function	Outline
All door lock function	Pressing the lock switch locks all the doors (including the back door).
All door unlock (Unlock 2 operation)	Pressing the unlock switch twice within 3 seconds unlocks all the doors (including the back door) after the driver door is unlocked.
Chattering prevention function	If a switch is pressed, the corresponding switch operation is performed once. If a switch is held down, the corresponding switch operation occurs only once and does not repeatedly activate. When pressing a switch at 1 second intervals, the corresponding operation activates once for every press of the switch.
Answer-back function	When the doors are locked by a wireless operation, the hazard warning lights flash once and the wireless door lock buzzer sounds once. When the doors are unlocked by a wireless operation, the hazard warning lights flash twice and the wireless door lock buzzer sounds twice.
Automatic locking function	If no doors are opened within 60 seconds after they are unlocked by the door control transmitter, all the doors lock again automatically.
Door ajar warning function	If any door is open or ajar, pressing the lock switch causes the wireless door lock buzzer to sound for approximately 10 seconds.
Panic alarm function	Pressing the panic switch of the transmitter for more than approximately 1.0 second causes the following alarms to activate: Sounds the horns. Flashes the headlight assemblies, rear combination light assemblies and hazard warning lights. While the panic alarm is operating, pressing any switch of the door control transmitter cancels the alarm operation.
Illuminated entry function	When the map light door switch is on, the No. 1 room light door switch is on and all the doors are locked, pressing the unlock switch causes the interior light illumination to turn on and all the doors to unlock simultaneously. If the doors have not been opened, the interior light turns off after approximately 15 seconds.

HINT:

With no door control transmitter in the ignition key cylinder (unlock warning switch is off) and all the door courtesy light switches off, pressing the lock or unlock switch of the door control transmitter causes the transmitter to output weak electrical waves to the door control receiver.