Keyless Access System

System Description

The keyless access system consists of the keyless access control unit, the ignition switch control unit, the door outer handle touch sensors, the LF (low frequency) antennas, the RF (radio frequency) units, the keyless access indicator, the answer back buzzer, and the keyless remote. The function of the system is to allow the driver hands free entry into the vehicle along with starting the engine without an ignition key.

RF (Radio Frequency) Units
The RF unit 1 is located behind the display control module and the RF unit 2 is located on the rear shelf. The RF units combine the RF signal sensing and RF signal receiving to identify the keyless remote's code.

LF (Low Frequency) Antennas
The front interior, rear interior and rear shelf LF antennas send the signals to the keyless remote placed in the interior. The driver's door, front passenger's door, and rear bumper antennas send the signals to the keyless remote outside of the vehicle.

Ignition switch control unit
The ignition switch control unit is built in the ignition switch, and it controls the steering lock solenoid. When the built-in key is inserted in the ignition switch or the keyless remote code is identified, the ignition switch control unit makes the steering lock solenoid release.

Touch Sensor and look buttons
The touch sensors and lock buttons are built in the driver's and front passenger's door outer handles. Grip the door outer handle to unlock and press the lock button on the door outer handle to lock the doors without using the built-in key operation when the driver carrying the keyless remote.

Fail-safe Function
The system has a fail-safe function. If any malfunction occurs, the keyless access indicator in the gauge comes on.

Self-diagnostic Function
The system also has a self-diagnostic function.