K183 Near Field Communication Module

The Near Field Communication Module, also referred to as Virtual Key Module (VKM) is the primary control module for the Digital key system. It receives a constant B+ voltage and ground. The Near Field Communication Module communicates with the vehicle via AUTOSAR CAN Bus 5 and with each UHF Low Energy Remote Control Access Sensor Transceiver via Virtual Key Private CAN. The Near Field Communication Module acts as the serial data master to the UHF Low Energy Remote Control Access Sensor Transceiver. The Near Field Communication Module is typically located in a central location of the vehicle interior, often in the center console area. This is to ensure consistent wireless communication coverage in the interior of the vehicle. The Near Field Communication Module takes information gathered from the UHF Low Energy Remote Control Access Sensor Transceiver, as well as information from its own UWB chip and calculates the position of the mobile devices with respect to the vehicle. Mobile devices position is communicated to BCM in order to allow lock/unlock/starting in the designated zones.