KEYLESS ENTRY SYSTEM

Keyless entry system has been adopted. There are the following features.

The 2-button transmission switch type (lock/unlock buttons) transmitter which transmits the radio signal is adopted.
The ETACS-ECU is equipped with the integral receiver and receiving antenna.
It can memorize up to 8 encrypted codes using M.U.T.-III.
The room lamp answerback and hazard lamp answerback are adopted.
The lock/unlock buttons can lock or unlock all doors (including the tailgate).
The dead lock system can be operated with the transmitter <RH drive vehicles: option> (Refer to ).

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 encrypted code.
There are two buttons on the transmitter; the lock button and the unlock button.
A brilliant silver Three-diamond mark is inlaid on the back side of the key grip to improve appearance.
A coin type battery, CR2016 is used in a transmitter.
The transmitter switch operation allows the system to operate as follows:

Operation of keyless entry system	Operation of transmitter
Lock all doors and tailgate	Lock button (pressed once)
Unlocks all doors and tailgate	Unlock button (pressed once)
Dead lock system function (Refer to ).	Press the lock button once to lock all the doors and tailgate, and within 2 seconds, press the lock button again.

ENCRYPTED CODE

The figure above shows the codes transmitted from the transmitter. Every time the button is pressed, the data code is transmitted one time. When the button is continuously pressed for long, transmission is automatically stopped after about 20 seconds passed. The encrypted code for user identification is a combination of 0 and 1, and more than 1 million different combinations are available. In addition to the encrypted code, the data code contains a rolling code which changes at each transmission, protecting transmission codes from theft by coping.

ETACS-ECU (RECEIVER)

The ETACS-ECU incorporates a receiver with an antenna. The receiver compares the code sent from the transmitter with the code retained in the receiver through the antenna.
A maximum of eight encrypted code (8 transmitters) can be registered by connecting the diagnosis connector to the M.U.T.-III.

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

When the ETACS-ECU receives an radio wave signal of the identification code stored in the receiver, the ETACS-ECU outputs LOCK/UNLOCK signal and informs the driver of the keyless entry system operation by flashing the lamp. Using an adjustment function*, the number of flashing times for the hazard lamp answer-back can be changed between 0 - 7 times. The initial setting at factory for the answer-back function is as follows: "Hazard warning lamp: LOCK Flash once, UNLOCK Flash twice / Room lamp: LOCK extinguish**, UNLOCK Stay on for 15 seconds."

note

*: Using an adjustment function, the hazard lamp answer-back function can be enabled/disabled. This is done by using the M.U.T.-III.

Item	Operation
Item	Doors and tailgate locked	Doors and tailgate unlocked
ETACS-ECU (receiver)	Sends lock signal	Sends unlock signal
Room lamp	Extinguish**	Illuminates for 15 seconds
Hazard warning lamp	Flashes once	Flashes twice

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 HAZARD LAMP ANSWERBACK FUNCTION

When LOCK signal from the keyless entry transmitter is input to the ETACS-ECU, all doors (including tailgate) are locked and the hazard warning lamp flashes once. When UNLOCK signal is input, all doors (including tailgate) are unlocked and the hazard warning lamp flashes twice.

note

Using an adjustment function, the answer-back function can be enabled/disabled. This is done by using the M.U.T.-III.

KEYLESS ENTRY ROOM LAMP ANSWER-BACK FUNCTION

When LOCK signal from the keyless entry transmitter is input to the ETACS-ECU, all doors (including tailgate) are locked and the room lamp will extinguish*. When UNLOCK signal is input, all doors (including tailgate) are unlocked and the room lamp illuminates for 15 seconds. The room lamp fades in, keeps on, and fades out in 15 seconds after the door unlock relay is operated.

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

If any door (including the tailgate) is not opened or closed within 30 seconds after the doors (including the tailgate) are unlocked by the keyless entry system, ETACS-ECU automatically outputs the door lock signal to lock the doors (including the tailgate). This function prevents the doors (including the tailgate) from being unlocked unexpectedly by operation errors. Using an adjustment function*, the timer lock delay can be changed between 10 - 80 seconds. The initial setting at factory is 30 seconds.

note

*: Using an adjustment function, the timer lock delay can be changed. This is done by using the M.U.T.-III.

OPERATION INHIBITION CONDITIONS

The operation of the keyless entry system is inhibited in the following conditions.
LOCK OPERATION

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

UNLOCK OPERATION

When the ignition key is inserted into the ignition switch.