Description And Operation: Operation

The shifter assembly incorporates an electronic control module called an Electronic Shifter Module (ESM). The ESM communicates with the Transmission Control Module (TCM) and other modules on the Controller Area Network (CAN) C Bus.

The ESM is connected to the vehicle wire harness with a single 12 way connector located at the shifter.

The ESM can set Diagnostic Trouble Codes (DTCs) when a fault is detected.

The shifter offers (P, R, N, D, M) modes of function. The M selection (Manual mode) is engaged by moving the shift-lever sideways to M. Requests to up/down shift are achieved by moving the lever fore/aft once in the manual position.

The ESM processes the up/downshift requests when operating in manual mode and communicates the request to the TCM.

The ESM processes requests from the TCM to open or close the Brake Transmission Shifter Interlock (BTSI) solenoid located in the shifter.