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| Illustration 1 | g01442988 |
The Connection Points For The CAT Data Link. | |
ALM Data Output - This serial data link is a single directional link. The GSC+P uses this data link for one-way communication with optional Alarm Modules (ALM) or the optional Customer Interface Module (CIM). The ALM Data Link consists of a single wire that connects the GSC+P (connector contact 35) to an ALM or a CIM. A return connection (battery negative) is required between the GSC+P and the module. Refer to Systems Operation, "Alarm Modules" for more information about the ALM Data Link. Also, refer to Systems Operation, "Customer Interface Module"for more information on the ALM Data Link.
CAT Data Link - This serial data link is bidirectional. The data link has two functions. This data link is used for two-way communication with the engine ECM. The CAT Data Link uses a shielded twisted pair cable that connects the GSC (connector contact 19 and connector contact 20) to the CCM or to the engine ECM. For more information, refer to the Systems Operation, "Customer Communication Module".
CCM Data Link - This serial data link is bidirectional. The GSC uses this data link for two-way communication with the optional Customer Communication Module (CCM). The Data Link uses a shielded twisted pair cable that connects the GSC (connector contact 21 and connector contact 22) to the CCM. For more information, refer to the Systems Operation, "Customer Communication Module".