HEXA

TRANSMISSION 6 Transmission System Overview : The 6L50 is a six speed transmission for rear and all-wheel drive vehicle, electronically controlled. Changing gear ratios is fully automatic and is accomplished through the use of a Transmission Control Module (TCU) located within the transmission. The transmission module receives and monitors various electronic sensor inputs and CAN data to calculate and command gear ratio change. The interface between the control modules and components are showed in the following block diagram which includes: -TCU (Transmission Control Unit). -EMS (Engine Management System). -BCM (Body Control Module) if equipped. -Electrical components: IMS (internal Mode Switch), speed sensors, temp sensor. The transmission module is connected to the vehicle with a pass through 16 pins connector. The communication with the other vehicle modules is completed via the CAN bus. The CAN bus is application specific. The variety of gear ranges in the automatic transmission is made possible through the interaction of numerous mechanically, hydraulically and electronically controlled components inside the transmission. At the appropriate time and sequence, these components are either applied or released and operate the gears that a gear ratio consistent with the driver’s needs.