GSIC - Global Service Information Center

# WIRELESS DOOR LOCK CONTROL SYSTEM > SYSTEM DESCRIPTION

WIRELESS DOOR CONTROL SYSTEM DESCRIPTION

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

   1. The door control receiver performs the code identification process and the instrument panel junction block (integration relay) operates the door lock control. A serial data link is provided for communication between the receiver and junction block.
   2. A key-integrated type transmitter is used and it contains the following 2 switches: the door lock switch and door unlock switch.
   3. An LED is built into the transmitter so that the battery status can be checked.

FUNCTION OF MAIN COMPONENTS

Components | Functions

Door control transmitter

1. Contains LOCK and UNLOCK switches

1. Transmits faint electric waves (recognition codes and function codes) to door control receiver
2. Illuminates indicator light (LED) during transmission

Unlock warning switch assembly | Detects if key is in ignition key cylinder or not
Front door courtesy light switch assembly Rear door courtesy light switch assembly | Turns ON when door is open and turns OFF when door is closed. Outputs door status (open or closed) to instrument panel junction block (integration relay).
Front door lock assembly Rear door lock assembly | Transmits door lock positions of each door to instrument panel junction block (integration relay)

SYSTEM FUNCTION

1. Door lock / unlock function:

   1. With no key in the ignition key cylinder (unlock warning switch is OFF) and all door courtesy light switches OFF, pressing the door control transmitter's LOCK / UNLOCK switch causes the transmitter to output faint electric waves. The transmitter will send a faint electrical wave to the door control receiver. The high frequency circuit built into the door control receiver demodulates the wave into code data, computes the date, and compares the data with previously registered ID codes. If the data is verified, a door lock / unlock request signal is output to the instrument panel junction block (integration relay). When the request signal is received, the junction block outputs a door lock / unlock control signal to each door lock assembly. Each door lock assembly then locks / unlocks its respective door and turns ON / OFF its door lock position switch according to the signal.

2. Answer-back function:

   1. The instrument panel junction block (integration relay) receives the door unlock detection switch's ON / OFF signals and uses these signals to confirm if door control operation has completed. The junction block then outputs the hazard warning light's output control signals to flash the hazard warning lights as an answer-back.

3. The wireless door lock control system has the following functions.

   Function | Outline
   All door lock function | Pressing LOCK switch locks all doors
   All door unlock function | Pressing UNLOCK switch unlocks all doors
   Answer-back function | Hazard warning lights flash once when doors are locked, and flash twice when doors are unlocked to indicate that operation has been completed
   Automatic locking function | If no doors are opened within 30 seconds after they are unlocked by wireless transmitter, all doors will lock again automatically

   Illuminated entry function

   If locked doors are unlocked through wireless operation, ignition key cylinder light and dome light illuminate. If one of following situations occurs, lights will fade out:
   1. Within 15 seconds, doors are not opened and doors are locked through wireless operation
   2. Within 15 seconds, key is inserted in ignition key cylinder and ignition switch is turned ON
   3. No operations or actions are performed for 15 seconds

   Security function | Sends signal as rolling code
   Transmitter recognition code registration function | Enables 4 modes for registering (writing and storing) transmitter recognition codes in EEPROM, which is built into door control receiver