Keyless Entry: Description and Operation

SYSTEM OUTLINE

In this system, the wireless door lock control ECU receives weak radio wave transmitted from the transmitter built-into the ignition key and outputs the signal to the body ECU No.2. Through communication control of the body ECU and door ECU etc., all the doors and the luggage door can be locked and unlocked by the remote control.

1. NORMAL OPERATION

Lock operation
When the lock SW on the transmitter is pressed, all the doors are locked.

Unlock operation
When the unlock SW on the transmitter is pressed once, only the driver door is unlocked. When the unlock SW is pressed again within 3 sec., all the doors are unlocked.

Luggage door unlock operation
When the luggage door unlock SW is kept pressed for approximately 1 sec. or longer, the luggage door is opened.

2. AUTO LOCK FUNCTION
If the door is not actually opened within 30 sec. after the door has been unlocked by pressing the unlock SW on the transmitter, all the doors are automatically locked. If any of the following conditions is detected, the auto lock does not function.

Any door is opened.
The ignition key is inserted into the ignition SW. When the lock detection SW of all the doors are locked.

3. WIRELESS DOOR LOCK STOP FUNCTION
If any of the following conditions is detected, the wireless door lock does not function.

Lock operation
Any door is open (The door courtesy SW is on). The ignition key is inserted into the ignition key cylinder (The unlock warning SW is on). The ignition SW is turned to the ON position.

Unlock operation
The ignition SW is turned to the ON position.

Luggage door unlock operation
The ignition SW is turned to the ON position.

4. BUZZER SOUND FUNCTION
When the body ECU No.1 receives the door lock signal from the door ECU via the door lock motor, during lock operation, the wireless door lock buzzer goes on once (for approximately 0.1 sec.).

When the body ECU No.1 receives the door unlock signal from the door ECU via the door lock motor, during unlock operation, the wireless door lock buzzer goes on twice (for approximately 0.2 sec. at intervals of 0.1 sec.).

When the luggage door is unlocked, and the body ECU No.1 outputs the unlock signal, the wireless door lock buzzer goes on once (for approximately 0.5 sec.).

When the body ECU No.1 receives the lock signal from the transmitter while any door is open, the wireless door lock buzzer sounds for approximately 10 sec. If the door is closed or if the unlock signal is received from the transmitter while the buzzer is sounding, the buzzer stops.

5. CAR FINDER FUNCTION
When the lock SW on the transmitter is pressed with all the doors locked, the body ECU No.1 receives the signal and the hazard light flashes once through communication control of the body ECU and door ECU etc.

6. ILLUMINATED ENTRY FUNCTION
When the body ECU No.2 detects the unlock state after the unlock operation has been made, it turns on the lights, such as the ignition key cylinder light for 15 sec. If all the doors are locked during this operation, lighting is cancelled and the lights immediately fade out.

7. PANIC MODE FUNCTION
When the lock switch on the transmitter is kept pressed for approximately 2.5 sec., the body ECU No.1 receives the signal and enters the panic mode. The theft alarm goes on upon receiving the signal, the body ECU No.1, and the headlights and taillights flash through the communication of the body ECU and door ECU etc. At this time, when any SW on the transmitter is pressed, the panic mode is cancelled, the theft alarm is stopped, and the headlights and taillights go off.

8. REPEAT FUNCTION
If the lock detection signal in response to the output signal is not received after the body ECU No.1 has output the lock signal, the lock signal is output again after approximately 2 sec.