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CAT ET 2025A Select ECM menu function is only available when more than one ECM is connected to the service tool. This function allows ECM that the service tool targets as the current ECM to be selected. The service tool's menus and functionality is based on this current ECM. The name of the current ECM displays in the right corner of the status bar.

CAT ET 2025A

Cat comm3 adapter

Instructions
To select the ECM:

Select the Select ECM option from the File menu. 

The ECM Selector dialog box is displayed. 
This dialog box displays a list of the ECMs currently available on the data link. 

Next to each of the ECM names, in the Select an ECM list box, there is an icon. If the icon shows a connection, then the ECM is currently communicating. 

If the icon shows a disconnection, then the ECM is not serviceable. 
Highlight an ECM, and click OK. The ECM Summary screen for the selected ECM is displayed. 
Note: If the ECM is not serviceable, the "Switch Data Link" button displays.

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