WALKWAY 5293067 - Caterpillar

Engine ECM (9) is mounted to the left side of the engine. The engine compartment cover provides access to this component.The engine ECM has the following two 70-pin connectors:
Connector "J2" (10)
Connector "J1" (11) Connector "J2" gathers input signals from the engine speed and timing sensors. Connector "J1" transmits information to the machine ECM through the CAN Bus. The machine ECM uses this input as part of the load control logic.
Illustration 6 g01263745
Engine ECM TerminalsPower transfers from circuit breaker "CB7" to the following terminals: terminal "J1-48", terminal "J1-52" and terminal "J1-53" of engine ECM (9). The ECM is grounded at the following terminals: terminal "J1-61", terminal "J1-63" and terminal "J1-65".Terminal "J2-48" of engine ECM (9) sends power to contact "2" of secondary speed and timing sensor. Contact "1" of the sensor is connected to terminal "J2-49" of the engine ECM. As the engine operates, the secondary speed and timing sensor generates a series of pulses as teeth on the camshaft gear pass the sensor. All of the teeth are evenly spaced except for one tooth. When the tooth that is not evenly spaced passes the sensor, the engine ECM establishes the position of the number one cylinder as well as the speed of the engine.Terminal "J2-58" of engine ECM (9) sends power to contact "2" of primary speed and timing sensor. Contact "1" of the sensor is connected to terminal "J2-59" of the engine ECM. As the engine operates, the primary speed and timing sensor generates a series of pulses as teeth on the crankshaft gear pass the sensor. All of the teeth are evenly spaced except for one tooth. When the tooth that is not evenly spaced passes the sensor, the engine ECM establishes the position of the number one cylinder as well as the speed of the engine.Engine ECM (9) compares the input from the two speed and timing sensors in order to determine the speed of the engine. The engine ECM broadcasts the engine speed information to machine ECM (5) across the CAN Bus.
Illustration 7 g01263749
View Under the Instrument Panel (12) Electronic display group (13) Twenty four pin connector (14) Forty pin connectorElectronic display group (12) is mounted to the instrument panel. The electronic display group has a 24-pin connector (13) and 40 pin connector (14).
Illustration 8 g01263797
Electronic Display Group TerminalsThe electronic display group receives power from circuit breaker "CB13" at terminal "10" of the 40 pin connector. The unit is grounded at terminal "9" of the 40 pin connector. The electronic display group monitors input signals at the following terminals of the 24 pin connector:
Terminal "4" receives an analog input signal from the work mode switch when the switch is in the TRAVEL position.
Terminal "5" receives an analog input signal from the traction control switch when the switch is in the ON position.
Terminal "6" receives an analog input signal from the load control switch when the switch is in the ON position.The electronic display group shows information about the switch positions on the display panel. The display control