ROLLER GP-TRACK-DOUBLE FLANGE 1248258 - Caterpillar

Table 2
Voltage Output    
Position of Joystick     Voltage    Duty Cycle    
Full Forward     1.2 to 1.9 DCV     5%    
Neutral     4.3 to 4.9 DCV     50%    
Full Rear     7.5 to 8.1 DCV     95%    
Full Left     1.2 to 1.9 DCV     5%    
Full Right     7.5 to 8.1 DCV     95%    Switches
Switches can provide three types of switch inputs to the transmission electronic control module (ECM):an open signal, a ground signal and a +battery signal. Switches are open or closed.
When the switch is open, no signal is provided to the corresponding input of the transmission ECM.
When a switch is closed, a ground signal or a +battery signal is provided to the corresponding input of the transmission ECM.Rotary Switch (Variable Shift Control)
Illustration 9 g00779624
Variable Shift Control SwitchThe variable shift control switch is an input of the transmission ECM. The switch allows the selection of a range of points to shift the transmission for each speed. The switch has three inputs to the transmission ECM. The combination of inputs for each switch position, are shown in the following table.
Table 3
Variable Shift Control Switch Status    
Switch Position     Economy
J2-32     Intermediate
J2-33     Standard
J2-34    
Economy     Closed     Open     Open    
Intermediate     Open     Closed     Open    
Standard     Open     Open     Closed    ReferenceFor more information on the variable shift control, refer to the Service Manual module Operation and Maintenance Manual, "Variable Shift Control" for the machine that is being serviced. Start Switch (Key)
Illustration 10 g00291705
Key Start SwitchThe key start switch is an input of the transmission electronic control module (ECM). The key start switch informs the transmission ECM of an attempt to start the engine. The transmission ECM then initiates the neutral start function. During normal machine operation, the start terminal of the key start switch is open. When the key start switch is turned to the START position, the start terminal closes to the +battery and the +battery voltage is present at connector contact J2-1 of the transmission ECM. When all starting conditions are satisfied, the transmission ECM sends a +battery signal to the connector contact J2-7 for the start relay and engine cranking begins.Note: When the key start switch is in the ON position, a +battery signal is sent to connector contact J1-1. This activates the transmission ECM.Note: After the key start switch is initially turned to the START position, the switch will not return to the START position from the ON position. The switch must be turned to the OFF position first. Then, the switch can be turned to the START position.ReferenceFor more information on the neutral start function, refer to Systems Operation, "transmission Electronic Control System" for the machine that is being serviced.ReferenceFor more information on the function of the transmission ECM, refer to Systems Operation, "Electronic Control Module (transmission)" for the machine that is being serviced.Switches (Joystick Steering)
Switch (Transmission Direction and Speed Control Lever)
Illustration 11 g02421121
(1) Direction