KEYLESS ENTRY SYSTEM






  • Transmitter has two buttons (LOCK/UNLOCK).
  • The ETACS-ECU is equipped with the integral receiver and receiving antenna.
  • Up to 4 encrypted codes (4 transmitters) can be registered using M.U.T.-III.
  • Answer-back function has been adopted.
  • Using the LOCK/UNLOCK buttons, all doors can be locked or unlocked.

DESCRIPTION OF STRUCTURE AND OPERATION


TRANSMITTER





  • The transmitter is integrated into the master key.
  • When either button is pressed, the transmitter emits a radio signal representing a specific ID code.
  • There are two buttons on the transmitter; the lock button and the unlock button.
  • An indicator lamp, which illuminates when signals are transmitted, is added on the key grip. This indicator lamp informs you of the signal transmission status and warns you of flat battery.
  • A brilliant silver Three-diamond mark is stamped on the back side of the key grip to improve appearance.
  • A signal transmission circuit (printed circuit) and a battery are housed in one case. The case is housed in the key grip, thus improving resistance to water ingress.
  • A coin type battery, CR1616 is used in the transmitter.
  • The transmitter switch operation allows the system to operate as follows:
System operation
 The transmitter is operated.
All doors are locked.
 Press the lock button once.
All doors are unlocked.
 Press the unlock button once.

ENCRYPTED CODE





ETACS-ECU (RECEIVER)



  • The ETACS-ECU incorporates a receiver with an antenna. The receiver compares the code sent through the antenna from the transmitter with the code retained in the receiver.
  • The ETACS-ECU sends a signal only when those two codes correspond and the rolling code is judged correct.
  • All of those output signals are processed internally in the ETACS-ECU.
  • A maximum of four encrypted code (4 transmitters) can be registered by connecting the M.U.T.-III to the diagnosis connector.

FUNCTION FOR CONFIRMING ETACS-ECU (RECEIVER) OUTPUT AND OPERATION



KEYLESS ENTRY HAZARD LAMP ANSWERBACK FUNCTION





KEYLESS ENTRY ROOM LAMP ANSWER-BACK FUNCTION





note *: If doors are locked with the transmitter when the room lamp is ON while doors are opened, the room lamp is switched off in 1.2 seconds. In addition, if doors are locked with the transmitter when the room lamp is OFF , the room lamp does not work.

KEYLESS ENTRY TIMER LOCK TIME



OPERATION INHIBITION CONDITIONS




  • When the ignition key is inserted into the ignition switch.
  • When either door is open (the door switch: ON). (including door ajar)