DOOR ENTRY FUNCTION

DESCRIPTION OF CONSTRUCTION AND OPERATION

DOOR ENTRY FUNCTION

When a driver carrying a keyless operation key pressed a lock switch on the driver-side/front passenger-side door outside handle or on the tailgate lock release handle, unlock sensor on the door outside handle, or tailgate lock release handle (switch) (Refer to GROUP 42A, Door and Tailgate Lock

), the keyless operation key and KOS-ECU communicate to certify* the keyless operation key. When KOS-ECU certifies the registered keyless operation key within 70 cm in radius from these switches and sensors on outer side of the vehicle, it requests ETACS-ECU to lock/unlock the doors. (The key may not be certified even it is within this range, when it is positioned too high or too low).

note

*: In the communication for certification of the keyless operation key, KOS-ECU judges if the keyless operation key ID (specified to keyless operation key) contained in the response data from the keyless operation key coincides with the ID that has been stored in ECU by registration operation. The keyless operation key sends the response to KOS-ECU only when the KOS ID (specific to KOS-ECU) contained in the received data coincided with the stored ID. In the beginning of the communication for certification, KOS-ECU creates a encrypted code calculation factor in random number, and sends it to the keyless operation key together with the transmit data. The keyless operation key calculates the code by using the received factor, and sends the result to KOS-ECU together with the response data. KOS-ECU determines that the communication is established only when the code calculation results of the both parties coincided.

UNLOCKING OPERATION OF DOOR ENTRY FUNCTION

The keyless operation key and KOS-ECU communicate to certify the keyless operation key when the unlock sensor on the driver-side/front passenger-side door outside handle or the tailgate lock release handle (switch) is turned ON. When KOS-ECU certifies the registered keyless operation key on the outer side of the vehicle, it requests ETACS-ECU to unlock the doors.

CONTROL OF UNLOCKING OPERATION

1.When KOS-ECU detects that the unlock sensor on the driver-side/front passenger-side door outside handle or the tailgate lock release handle (switch) is turned ON, it transmits the exterior data from the exterior transmitter antenna assembly on the operation side. At the same time, KOS-ECU transmits the interfering radio wave* (reversal code) from the exterior transmitter antenna assembly on the other side (The interfering radio wave will be transmitted from the front passenger-side antenna assembly when the driver-side door outside handle is operated, and vice versa. It will not be transmitted when the tailgate lock release handle is operated).

note

*: The interfering radio wave is transmitted to disable the door lock operation by a person without the keyless operation key while a user with the keyless operation key is operating the door lock from the opposite side of the vehicle.

2.After the exterior data are transmitted from the exterior transmitter antenna assembly, the interior data are transmitted from the interior transmitter antenna assembly (front, rear).
3.For the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU), KOS-ECU monitors the response from the keyless operation key that meets the unlock conditions.

When the keyless operation key receives the exterior data only, KOS-ECU transmits the unlock request (request to unlock the applicable position) to ETACS-ECU.
When KOS-ECU received no response that enables the unlocking after the specified time period has passed, it performs the retry cycle once (When no response after the retry, KOS-ECU terminates the unlocking operation).

UNLOCKING OPERATION INHIBITION TIME

Considering the customer pulls the door outer handle to make sure the doors are locked, unlocking operation is inhibited for three seconds after the doors and the tailgate are locked by the lock switches on the driver-side/front passenger-side door outside handle or on the tailgate lock release handle. This duration can be selected from zero, three seconds, and five seconds, and can be switched using a customisation function (Refer to

). The initial setting at factory is 3 seconds.

UNLOCKING OPERATION INHIBITION CONDITIONS

The door unlocking operation is inhibited when:

The emergency key is in the ignition switch.
The push switch in the steering lock is ON.
The IG knob is in other than LOCK (OFF) position.
During the unlocking operation inhibition time

LOCKING OPERATION OF DOOR ENTRY FUNCTION

The keyless operation key and KOS-ECU communicate to certify the keyless operation key when the lock switch on the driver-side/front passenger-side door outside handle or on the tailgate lock release handle is turned ON. When KOS-ECU certifies the registered keyless operation key only on the outer side of the vehicle, it requests ETACS-ECU to lock all the doors (including the tailgate).

CONTROL OF LOCKING OPERATION

1.When KOS-ECU detects that the lock switch on the driver-side/front passenger-side door outside handle or on the tailgate lock release handle is turned ON, it transmits the exterior data from the exterior transmitter antenna assembly on the operation side. At the same time, KOS-ECU transmits the interfering radio wave (reversal code) from the exterior transmitter antenna assembly on the other side (The interfering radio wave will be transmitted from the front passenger-side antenna assembly when the driver-side door outside handle is operated, and vice versa. It will not be transmitted when the tailgate lock release handle is operated).
2.After the exterior data are transmitted from the exterior transmitter antenna assembly, the interior data are transmitted from the interior transmitter antenna assembly (front, rear).
3.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, confirm that there is no keyless operation key in the interior.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU cancels the locking operation.

4.KOS-ECU transmits the interior data from the interior transmitter data assembly (Front).
5.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, confirm that the lock conditions are met.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU cancels the locking operation.
When all the responding keyless operation keys receive the exterior data only, KOS-ECU transmits the lock request to ETACS-ECU.
If there is no response from the keyless operation keys, perform the step 6 once.

6.KOS-ECU transmits the exterior data from the exterior transmitter antenna assembly on the operation side. At the same time, KOS-ECU transmits the interfering radio wave (reversal code) from the exterior transmitter antenna assembly on the other side. (The interfering radio wave will be transmitted from the front passenger-side antenna assembly when the switch on the driver's door is operated, and vice versa. It will not be transmitted when the tailgate is operated.)
7.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, confirm that the lock conditions are met.

When the responded keyless operation keys after the retry receives the exterior data only, KOS-ECU transmits the lock request (request to lock the actuated position) to ETACS-ECU.

LOCKING OPERATION INHIBITION CONDITIONS

In the following cases, the door locking operation is inhibited.

Any door or the tailgate is open/ajar (door switch is ON). (including door ajar)
The emergency key is in the ignition switch.
The push switch in the steering lock is ON.
The IG knob is in other than LOCK (OFF) position.

AUTO LOCK FUNCTION

The auto lock function locks the doors automatically when a driver carrying the keyless operation key left the car with all the doors closed and unlocked. This function prevents the doors from being unlocked accidentally.

CONTROL OF AUTO LOCK FUNCTION

Interior/exterior judgment (Keyless operation key certification communication to detect if all the doors are closed)
1.KOS-ECU transmits the exterior data from the exterior transmitter antenna assembly (driver's side, passenger's side, tailgate).
2.After step 1 is completed, KOS-ECU transmits the interior data from the interior transmitter antenna assembly (Front).
3.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, KOS-ECU performs the following condition judgments.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU terminates the interior/exterior judgment.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU terminates the interior/exterior judgment.
If there is no response from the keyless operation keys, perform the step 6 once.

6.KOS-ECU transmits the exterior data from the exterior transmitter antenna assembly (driver's side, passenger's side, tailgate).
7.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, KOS-ECU performs the following condition judgments.

All the responded keyless operation keys receive the exterior data only.

note

The retry cycle for each door will be performed twice when no keyless operation key exists inside the car.

note

When a keyless operation key is detected inside the vehicle and the driver's side door is locked, and when the door closed last time is driver's door, KOS-ECU requests ETACS-ECU to unlock the doors to prevent the key from locked inside the car.

When all the responding keyless operation keys have received the exterior data only during a series of the keyless operation key certification communications (in order of driver's door, front passenger's door, and to tailgate), KOS-ECU moves to STEP 8.

Auto lock judgment (Keyless operation key certification communication after interior/exterior judgment)
8.When the auto lock function has been selected, KOS-ECU activates the auto lock answerback function.
9.KOS-ECU transmits the exterior data from the exterior transmitter antenna assembly (driver's side, passenger's side, tailgate).
10.After STEP 9 is completed, KOS-ECU transmits the interior data from the interior transmitter data assembly (Front).
11.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, KOS-ECU performs the following condition judgments.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU terminates the auto lock judgment.

note Steps 9 to 11 are performed in the order of the driver’s door → front passenger’s door → tailgate.

12.KOS-ECU transmits the interior data from the interior transmitter data assembly (Front).
13.After the specified time period (varies with the number of the keyless operation keys registered in KOS-ECU) has passed, KOS-ECU performs the following condition judgments.

When KOS-ECU receives the response from the keyless operation keys that received the interior data, KOS-ECU terminates the auto lock judgment.
When all the responded keyless operation keys receive the exterior data only during a series of the keyless operation key certification communications, KOS-ECU continues monitoring the keyless operation key (Repeat from step 9).
When no response is received during a series of the keyless operation key certification communications, KOS-ECU moves to step 14.

note The retry cycle for each door are not performed.

14.KOS-ECU requests ETACS-ECU to lock the doors. ETACS-ECU locks the doors and sends the answerback request to KOS-ECU. By this request, KOS-ECU sounds the outer buzzer answerback.

AUTO LOCK FUNCTION INHIBITION CONDITIONS

The door auto lock function is inhibited when:

Any door or the tailgate is open/ajar (door switch is ON). (including door ajar)
The emergency key is in the ignition switch.
The push switch in the steering lock is ON.
The IG knob is in other than LOCK (OFF) position.

AUTO LOCK FUNCTION CANCELLATION CONDITION

The auto lock function is cancelled when:

No keyless operation key is detected on the outer side of the vehicle during the keyless operation key certification communication performed to detect if all the doors are closed.
Any of the keyless operation switches (on driver-side door, front passenger-side door, or tailgate) is pressed after all the doors are detected closed.
All the auto lock function inhibition conditions are met.
A keyless operation key is detected inside the vehicle.

ANSWERBACK FUNCTIONS

When KOS-ECU sends a signal to ETACS-ECU, ETACS-ECU outputs the lock/unlock signal and activates the hazard warning lamp and the outer buzzer to notify the driver the doors are locked/unlocked.

	Lock signal received	Unlock signal received	When received auto lock signal
ETACS-ECU	Lock signal output	Unlock signal output	Lock signal output
Hazard warning lamp	Flashes once	Flashes twice	Flashes once
Outer buzzer	Sounds once (initial setting) or none	Sounds twice (initial setting) or none	Sounds once

KOS TIMER LOCK FUNCTION

When none of the doors is opened within 30 seconds after the doors are unlocked by KOS, ETACS-ECU automatically outputs the door lock signal to lock the doors. This function prevents the doors from being unlocked accidentally.