Component Description: Notes

When the driver needs to change gear position the driver selects PRND or M by rotating a GSM dial. The GSM senses the dial position 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 TCM. The TCM receives the input from the GSM, combines in vehicle conditions and moves the transmission to the commanded position. The TCM 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 TCM in the event of a malfunction in the HS1-CAN, the HS2-CAN or the GWM.

GSM 

The GSM rotary dial has hall effect sensors that are used as inputs to indicate that the dial has been rotated. When park is selected above 5 mph neutral is provided along with a message in the IPC. The Brake Transmission Shift Interlock (BTSI) CAN signal is used for normal function to shift from P.

RCM 

The shift by wire system uses the driver's safety belt buckle as one of several inputs used to determine driver presence. If the buckle is deemed faulted for any reason the system reads this as "unbuckled" so that any time the door transitions to "open" below a set speed the TCM commands a to return to park.