SLEEVE-CPRSN 4876638 - Caterpillar

Input/Output
Communication between the Machine ECM and the other control modules on the machine is conducted over data link circuits. The data link circuits allow the sharing of information with other electronic control modules. The data link circuits are bidirectional. The data link circuit allows the ECM to send information and to receive information.The ECM supports two types of data link systems.
Cat® Data Link
CAN Data LinkThe two types of data links are the main structure for communication between all the control modules on the machine. More than one CAN data link system can be present on a machine. Dedicated CAN data link circuits can be used for communication between specific controls on the machine.Communication between the Machine ECM and the other control modules on the machine are conducted over the J1939 Data Link circuit that is connected to each control module. The ECMs use the Cat Data Link to send and receive information from the Cat® Electronic Technician (Cat ET) Service Tool.A module identifier (MID) is assigned to each ECM on a machine. The MID for the Machine ECM is 39.Note: The following tables list every possible connection for the Machine ECM. Depending on the attachments that are installed on your machine, some of the listed circuits may not be present.Machine ECM
Table 1
Contact Description for Machine ECM J1 Connector
No. Function Type
6 8V Supply 8V Sensor Power
7 8V Return 8V Sensor Power Return
8 5V Supply 5V Sensor Power
9 5V Return 5V Sensor Power Return
10 Engine Cooling Fan Solenoid PWM Output
11 Secondary Steering Motor Relay Digital Output 300mA
13 3rd Function Forward Solenoid PWM Output 2A
14 3rd Function Rearward Solenoid PWM Output 2A
15 Park Brake Switch - Disengaged