Machine ECM
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| Illustration 1 | g00554751 |
The Machine electronic control module (ECM) makes decisions that are based on input information and memory information. After the Machine ECM receives the input information and memory information, the Machine ECM sends a corresponding response to the outputs. The inputs and outputs of the Machine ECM are connected to the machine harness by two 70 contact connectors. The ECM is located under the floor panel inside the cab on the front side of the machine. There are no visual indicators on the ECM. Information from the machine ECM is shown on the Caterpillar Electronic Technician. The ECM sends the information to the Caterpillar ET via the Cat Data Link.
Note: The ECM is not serviceable. The ECM must be replaced if the ECM is damaged. The ECM must be replaced if the ECM is diagnosed as being faulty.
Prior to replacing an ECM, always contact your dealership's Technical Communicator for possible consultation with Caterpillar. This consultation may greatly reduce repair time. If the ECM must be replaced, refer to Testing and Adjusting, "Electronic Control Module (ECM) - Replace".