ADVANCED KEYLESS ENTRY SYSTEM

id091400703400

Outline

Function

Remote transmitter authorization function

•  When the following operation is performed, the body control module (BCM) verifies the remote transmitter ID data.

―  Locking/unlocking using a remote transmitter

―  Locking/unlocking using touch sensor on outer handle

―  Liftgate opening using liftgate opener switch

―  Locking using door lock switch (liftgate)

Auto re-lock function

•  After unlocking, if any door or the liftgate is not opened and a period of time according to the personalization setting has elapsed, all doors are automatically locked.

Out-of-area (reception area) type auto lock function

•  After closing all doors, when the remote transmitter is brought out of the reception area of the keyless antenna, all doors are automatically locked.

Remote transmitter pause function

•  In case of an unauthorized entry into the vehicle, all functions of the remote transmitter left inside the vehicle are temporarily suspended except for the door lock to prevent unauthorized engine starting using the remote transmitter left inside the vehicle.

Remote transmitter left-in-vehicle prevention function

•  When the lock operation is performed with the remote transmitter in the vehicle, all the doors are unlocked automatically to prevent the remote transmitter from being locked in the vehicle.

―  When the lock operation is performed outside the vehicle using a remote transmitter separate from the remote transmitter in the vehicle, all the doors are not unlocked automatically. (because all doors can be unlocked again)

Alert function

•  The user is warned using any of the following if there is a malfunction in the advanced keyless entry system or it is operated incorrectly which results in a problem occurring.

―  Notification and warning speaker

―  Indicator light/warning light/indication on LCD in instrument cluster

―  Keyless buzzer

Remote transmitter battery voltage low indication function

•  This function signals the user from the instrument panel that the battery voltage of the remote transmitter is low.

Structural View

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System Wiring Diagram

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Operation

Lock/unlock operation using remote transmitter

Note

•  When the lock/unlock button on the remote transmitter is pressed with the main power switched OFF, all the doors are locked/unlocked.

1.  When the lock button or unlock button on the remote transmitter is pressed, the remote transmitter sends the ID data and button operation information (1) using radio waves.

2.  The keyless receiver sends (2) the received ID data and button operation information to the LF control unit via serial communication.

3.  When the LF control unit verifies and matches the ID data, it sends a lock/unlock request signal (3) to the body control module (BCM) via serial communication.

4.  The body control module (BCM) sends the lock/unlock request signal (4) to the following parts via CAN communication.

•  Door-electrical supply unit (driver's side)

•  Door-electrical supply unit (passenger’s side)

•  Electrical supply unit (ESU)

•  Charging port electrical supply unit

5.  When the door-electrical supply unit (driver's side) and the door-electrical supply unit (passenger’s side) receive the lock/unlock request signal (4), they operate (5) the motors of the door lock actuators to lock/unlock the doors.

6.  When the electrical supply unit (ESU) receives the lock/unlock request signal (4), it operates (5) the motor of the liftgate latch and lock actuator to lock/unlock the liftgate.

7.  When the charging port electrical supply unit receives the lock/unlock request signal (4), it operates (5) the charge lid lock actuator to lock/unlock the charging port lid.

8.  The body control module (BCM) activates the keyless buzzer^*1 (4).

9.  The body control module (BCM) sends a hazard light flash request signal (4) to the following parts via CAN communication at the same time the door is locked/unlocked.

•  Instrument cluster

•  Door-electrical supply unit (driver's side)

•  Door-electrical supply unit (passenger’s side)

•  Electrical supply unit (ESU)

•  Charging port electrical supply unit

10.  When the instrument cluster receives the hazard light flash request signal (4), it flashes^*1 (5) the hazard warning lights.

11.  When the front combination lights receive the hazard light flash request signal (4), they flash the front turn lights^*1 (5).

12.  When the door-electrical supply unit (driver’s side) and the door-electrical supply unit (passenger’s side) receive the hazard light flash request signal (4), they flash^*1 (5) the side turn lights.

13.  When the electrical supply unit (ESU) receives the hazard light flash request signal (4), it flashes^*1 (5) the rear turn lights.

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Lock/unlock operation using touch sensor on outer handle

Note

•  Lock/unlock operation is performed when a touch sensor on an outer handle is touched with all the following conditions met.

―  Main power is switched OFF

―  All doors are closed

―  The remote transmitter is within the reception area outside the vehicle.

1.  When the driver's or the front passenger's touch sensor is touched, a touch sensor on signal (1) is sent from the LF control unit to the body control module (BCM) using SERIAL LFU (UART) communication.

2.  Based on the touch sensor on signal, the body control module (BCM) sends a request output signal (2) to the LF control unit using SERIAL LFU (UART) to verify that the remote transmitter is inside the reception area.

3.  The LF control unit sends a request signal (3) from the keyless antenna of the door in which the touch sensor was touched to all keyless antennas for the vehicle interior using an electromagnetic wave.

4.  The remote transmitter receives the request signal from the outside antenna, and sends ID data (4) to the keyless receiver using an electromagnetic wave.

5.  The keyless receiver transmits the received ID data to the LF control unit using SERIAL communication. The LF control unit verifies the key ID number and sends the ID data (5) to the body control module (BCM) using SERIAL LFU (UART) communication.

6.  The body control module (BCM) sends the lock/unlock request signal (4) to the door-electrical supply unit (driver's side) and the door-electrical supply unit (passenger's side), and sends a liftgate release request signal (4) to the electrical supply unit (ESU).

7.  The PCM sends a charge lid lock/unlock signal (6) to the charge port-electrical supply unit (CP-ESU) via CAN communication.

8.  The door-electrical supply unit (driver's side) and the door electrical supply unit (passenger's side) operate (5) the motor of the front door lock actuator to lock/unlock the front doors.

Note

•  It takes approx. 1—2 s from when a touch sensor is touched until the lock/unlock operation is completed.

•  For an unlock operation, 3 s or more needs to elapse from the locking operation.

9.  The electrical supply unit (ESU) operates the motor of the liftgate latch and lock actuator (5) to release the liftgate.

10.  The charge port-electrical supply unit operates (7) the charge lid lock actuator to lock/unlock the charge lid.

11.  All the same time as the door lock/unlock operation, the body control module (BCM) sends a hazard light flash request signal (6) to the instrument cluster, the light control module (LCM), the door-electrical supply unit (driver’s side), the door-electrical supply unit (passenger’s side), and the electrical supply unit (ESU) as a CAN signal.

―  When locking: Hazard light flashes once

―  When unlocking: Hazard light flashes twice

12.  The body control module (BCM) operates (6) the keyless beeper for the following number of times:

―  When locking: Keyless beeper sounds once

―  When unlocking: Keyless beeper sounds twice

13.  When the instrument cluster, the light control module (LCM), the door-electrical supply unit (driver’s side), the door-electrical supply unit (passenger’s side), and the electrical supply unit (ESU) receive the hazard light flash request signal, the instrument cluster controls (7) the hazard indicator and the light control module (LCM), the door-electrical supply unit (driver’s side), the door-electrical supply unit (passenger’s side), and electrical supply unit (ESU) controls (7) the hazard light.

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Lock operation using door lock switch (liftgate)

Note

•  If the door lock switch of the liftgate is operated when all of the following conditions are met, all the doors are locked.

―  Main power is switched OFF

―  All doors are closed

―  The remote transmitter is within the reception area outside the vehicle.

1.  When the door lock switch (liftgate) is operated, a door lock switch on signal (1) is sent from the LF control unit to the body control module (BCM) using SERIAL LFU (UART) communication.

2.  When the body control module (BCM) receives a door lock switch on signal (1), it determines that the doors are to be locked and sends a lock request signal (2) to the following parts via CAN communication.

•  Door-electrical supply unit (driver's side)

•  Door-electrical supply unit (passenger’s side)

•  Charging port electrical supply unit

3.  When the door-electrical supply unit (driver's side) and the door-electrical supply unit (passenger’s side) receive the lock request signal (2), they operate (3) the motor of the front door lock actuator to lock the front doors.

4.  When the charging port electrical supply unit receives the lock request signal (2), it operates (3) the charge lid lock actuator to lock/unlock the charging port lid.

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Liftgate opening operation using liftgate opener switch (exterior)

1.  When the liftgate opener switch (exterior) is pressed, a liftgate open signal (1) is input to the body control module (BCM).

2.  Based on the liftgate open signal, the body control module (BCM) sends a request output signal (2) to the LF control unit to verify that the remote transmitter is inside the reception area.

3.  Based on the request output signal from the body control module (BCM), the LF control unit outputs a request signal (3) using the keyless antenna inside the rear bumper.

4.  The remote transmitter receives the request signal from the antenna (outside, rear), and sends ID data (4) to the keyless receiver.

5.  The keyless receiver transmits the received ID data (5) to the body control module (BCM).

6.  The body control module (BCM) verifies the ID data, and if the ID data matches, it sends a liftgate release signal (6) to the electrical supply unit (ESU).

7.  When the electrical supply unit (ESU) receives the liftgate release signal, it operates (7) the liftgate latch and lock actuator motor to release the liftgate.

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Auto re-lock function operation

•  After the body control module (BCM) sends an unlock request signal to the door-electrical supply unit (driver’s side) and the door-electrical supply unit (passenger’s side), if any of the following operations is not performed in 30 s^*1, it sends a lock request signal to the door-electrical supply unit (driver’s side) and the door-electrical supply unit (passenger’s side) to lock the front/rear doors.

―  A lock/unlock operation is performed using the remote transmitter.

―  The main power is switched to a position other than OFF

―  Locking/unlocking is performed using the touch sensor

―  A door or the liftgate is opened

Out-of-area (reception area) type auto lock function operation

1.  When all doors are closed after any door was opened, the body control module (BCM) goes on auto lock standby if all the following conditions are met.

•  There is no remote transmitter inside the vehicle.

•  The remote transmitter is within the reception area outside the vehicle.

•  Main power is switched OFF

2.  After entering the standby status, if the remote transmitter is moved out of the keyless antenna reception area and the ID data cannot be received from the keyless receiver, the body control module (BCM) sends a lock request signal to the door-electrical supply unit (driver’s side) and the door-electrical supply unit (passenger’s side) to operate all the lock actuators for a lock operation.

Note

•  The keyless beeper sounds once when switching to stand-by and the door is locked.

•  All doors, the charge lid lock actuator, and the liftgate are automatically locked within approx. 30 s, even when the remote transmitter is within the reception area of the keyless antenna. However, under the following conditions, they are not locked.

―  Another remote transmitter is inside vehicle

―  Driver's door is locked

―  A door or the liftgate is opened

―  Remote transmitter is not within reception area of keyless antenna before any door or liftgate is completely closed

Remote transmitter pause function operation

When door locking is performed

1.  If a lock signal is input with a remote transmitter detected inside the vehicle, the body control module (BCM) sends a request signal using the outside/inside keyless antennas connected to LF control unit.

2.  When the remote transmitter inside the vehicle sends the ID data to the keyless receiver, the keyless receiver transmits the received ID data to the body control module (BCM) via LF control unit.

3.  The body control module (BCM) receives the ID data, and after approx. 32 sec, it suspends the functions of the transmitter inside the vehicle. It also operates the keyless beeper for 10 sec.

When the liftgate is closed

1.  When the liftgate is closed with all the following conditions met, the body control module (BCM) sends a request signal using the interior keyless antennas connected to LF control unit.

―  All doors are locked.

―  The liftgate is opened.

―  The body control module (BCM) identifies a remote transmitter inside the vehicle.

2.  When the remote transmitter inside the vehicle sends the ID data to the keyless receiver, the keyless receiver transmits the received ID data to the body control module (BCM) via the LF control unit.

3.  The body control module (BCM) receives the ID data, and after approx. 32 sec, it suspends the functions of the transmitter inside the vehicle.

Remote transmitter pause cancel operation

•  The functions of the paused remote transmitter are restored when any one of the following conditions is met:

―  A remote transmitter with which the engine can be started is brought inside the vehicle.

―  The lock/unlock button on the paused remote transmitter is pressed.

―  A touch sensor is touched.

Operation of remote transmitter left-in-vehicle prevention function (during door closing operation)

1.  The body control module (BCM) operates the keyless beeper and unlocks the doors when all of the following conditions are met and all the doors are closed with the remote transmitter in the vehicle.

―  Driver’s door is locked from unlock with any other door open

―  The liftgate is closed.

―  Main power is switched OFF

Caution

•  If the doors are closed with the main power is switched ON (READY off), the doors are locked with the remote transmitter in the vehicle.

Note

•  If any one of the following conditions is met, activation of the keyless buzzer stops.

―  The lock/unlock button of the remote transmitter is pressed.

―  ouch sensor is touched to lock/unlock

―  Any door is opened.

―  The vehicle speed exceeds 10 km/h {6.2 mph}.

―  The liftgate is opened and closed.

Operation of remote transmitter left-in-vehicle prevention function (during liftgate closing operation)

1.  When the liftgate is closed with all the following conditions met, the body control module (BCM) operates the keyless beeper and puts the remote transmitter left-in-vehicle prevention function on standby.

―  All doors are closed and the driver's door is locked.

―  The liftgate is closed.

―  Main power is switched OFF

2.  When the liftgate opener switch is pressed while the remote transmitter left-in-vehicle prevention function is on standby, the body control module (BCM) verifies the remote transmitter ID data.

3.  When the body control module (BCM) determines that the remote transmitter is inside the vehicle, it operates the remote transmitter left-in-vehicle prevention function and sends a latch lever release signal to the electrical supply unit (ESU) to release the liftgate latch lever.

Note

•  When any of the following conditions is met while the remote transmitter left-in-vehicle prevention function is on standby, the remote transmitter left-in-vehicle prevention function standby is canceled.

―  The lock/unlock button of the remote transmitter is pressed.

―  Touch sensor is touched to lock/unlock

―  Any door is opened.

―  The vehicle speed exceeds 10 km/h {6.2 mph}.

―  The liftgate is opened and closed.

Alert function operation

•  Under the conditions in the table below, the body control module (BCM) sends a security warning request signal via CAN communication to the instrument cluster.

•  When the instrument cluster receives the security warning request signal, it displays the warning indicator in the multi-information display or it flashes the KEY warning light.

Condition	Keyless beeper	Instrument cluster
		Keyless warning alarm	KEY warning light (red)	Multi-information display
The advanced keyless entry system has a malfunction.	―	―	On
Driver's door is opened with main power switched to ACC	―	ON	―
Remote transmitter cannot be detected in vehicle when all doors are closed with main power switched to position other than OFF	Sounds 6 times	ON	Flash
A door lock operation is performed 3 times within 5 sec using a touch sensor with any door open.	Approx. 2 sec	―	―	―

Remote transmitter battery voltage low indication function operation

•  When the main power is switched from ON (READY off or on) to OFF under the condition indicated in the table, the body control module (BCM) sends a battery voltage low indication request signal to the instrument cluster via CAN communication.

•  When the instrument cluster receives the battery voltage depletion display request signal, it performs the remote transmitter battery voltage low indication in the multi-information display or it flashes the KEY indicator light.

Condition	Instrument cluster
	KEY indicator light (green)	Multi-information display
Body control module (BCM) receives code for low remote transmitter battery voltage*1	Flash (for approx. 30 sec after main power is switched OFF)