Component Description: Notes
WARNING: This page is about a different car, the 2023 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
When the driver needs to change gear position the driver selects PRN or D by pressing buttons on a GSM. The GSM senses the pressed button and sends a request over the Subnet Network, and the High Speed Controller Area Network 2 (HS2-CAN) through the GWM over the High Speed Controller Area Network 1 (HS1-CAN) to the PCM. The PCM receives the input from the GSM, combines in vehicle conditions and moves the transmission to the commanded position. The PCM reads the transmission range sensor (TRS) and confirms the correct position has been achieved.
There is a redundant Transmission Controller Area Network (TRANS-CAN) that allows the GSM to communicate directly with the PCM in the event of a malfunction in the HS1-CAN, the HS2-CAN or the GWM.