External Controls (G2006320): Operation: Notes

Rotation of the Transmission Control Switch (TCS) to any position is sensed by the TCM. Signals are passed via the High Speed (HS) Controller Area Network (CAN) powertrain systems bus from the TCS to the Transmission Control Module (TCM). The TCM then reacts according to the selected position.

The TCS is a magnetic system using Hall effect sensors to determine the position of the selector. The Sport(S) position selection allows the TCM to operate the transmission using the semi-automatic 'Commandshift' system.

Gear selections are sensed by the TCM when the driver operates the steering wheel paddle switches.

Once the TCS position is confirmed, the TCM outputs appropriate information on the FlexRay systems bus to the Body Control Module/Gateway Module (BCM/GWM). The information is received by the Instrument Cluster (IC) to display the gear selection information in the message center. The paddle switches can also be used on a temporary basis when the TCS is in the Drive (D) position to override the automatic gear selection if required.