Technical Description (Comment)
WARNING: This page is about a different car, the 2019 Mitsubishi Eclipse Cross. However, it is still accessible from the selected car via links, so may be relevant.
The lock/unlock signals from the transmitter are received by receiver antenna, and then sent to ETACS-ECU from receiver antenna. When ETACS-ECU receives signals from the key reminder switch, all the door switches and the liftgate latch, ETACS-ECU actuates the keyless entry system.