Only Wireless Control Function is Inoperative: Description
WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.
The door control receiver receives signals from the transmitter and sends these signals to the multiplex network body ECU. The multiplex network body ECU then controls the door operation by sending LOCK / UNLOCK signals to the appropriate door lock actuator.