Key Start Switch - This switch provides the +battery voltage to the ECM when the switch is placed in the ON position. This input also provides power to the start relay.
Shift Lever Sensor - The ECM must know the current gear position. The sensor for the shift lever provides a PWM signal. The PWM signal varies with the gear that is selected.
Top Gear Switch - This switch is used to select the desired top gear that is desired by the operator. This setting is limited to the Maximum Drive Gear of the machine.
Neutral/Run Switch - The status of this switch will determine the operational mode of the transmission. The two modes are "Run" and "Neutral".
Transmission Output Speed Sensor (TOS) - The TOS provides the ECM with the output speed of the transmission. Machines that were manufactured starting in the year 2005 are equipped with two transmission output speed sensors (TOS 1 and TOS 2).
Engine Output Speed Sensor (EOS) - The EOS provides the ECM with the output speed of the engine.