PUMP & MOTOR GP-SEC STEERING 3317452 - Caterpillar

Illustration 1 g02917540
Data Link Communication System
The monitor uses two different data links for communication the Cat Data Link and SAE J1939 (Can) Data Link. The data links are used for communication between the ECMs and allow communication with service tools.The data link is bidirectional. Each ECM can send and receive information. The data link is not a visible component. The data link consists of internal ECM circuits, the related harness wiring, and the harness connectors.The monitor communicate over the two data links that are present on the machine. The two types of systems are listed below.Cat Data Link - The Cat Data Link is used to send information about the status of the system between control modules and the Caterpillar Electronic Technician (ET). All diagnostic codes of the Chassis system are activated by the Cat Data Link.SAE J1939 Data Link - The SAE J1939 Data Link is a high speed data link. The SAE J1939 Data Link is used for high speed communication between the ECM and the control modules of other machine systems.