Indicates to the ECM the type of transmission installed in the vehicle. It is also used by the ECM to determine how to read inputs (brake switch #2, clutch, and neutral switches) and whether the Allison AT/MT/HT transmission driver is used.
If an Allison Automatic Transmission is installed, this parameter must be programmed to either MT/AT w/ 2 Brake Sw or MT/AT w/o 2 Brake Sw.
If any other automatic transmission is installed, this parameter should be programmed to either Auto w/ 2 Brake Sw or Auto w/o 2 Brake Sw.
The Manual selection requires a clutch switch connected to ECM Connector J1/P1 pin-24. Any of the automatic transmission selections (MT/AT w/ 2 Brake Sw, MT/AT w/o 2 Brake Sw, Auto w/ 2 Brake Sw, or Auto w/o 2 Brake Sw) require a neutral switch.
The selections with two brake switches require a second brake switch connected to ECM Connector J1/P1 pin-23.
