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Here is the instruction show you guide on how to use Caterpillar CAT ET 2025A special test functions.


Purpose

The Special Tests function allows a specific diagnostic test to be selected so that it may be triggered. The tests that appear in the list depend on the current ECM. 

CAT ET 2025A

CAT comm 3
 

Accessing
To run the Special Tests function, select Diagnostic Tests from the Diagnostic menu, and then select Special Tests from the submenu. The Special Tests screen is displayed.
 

Screen Layout
The Special Tests screen has the following areas:
 

Display Area
The Special Tests display area has two columns: Description Provides the name of the parameter
State Displays the current state of the parameter: "Not Installed", "Active", or "Not Active".

The Special Tests display area contains all of the available special tests for the currently selected ECM. Each ECM has one or more special tests displayed. However, only one test may be selected at a time.
 

Buttons  

The buttons available in the Special Tests screen are: Start After selecting one of the parameters, click this button to begin testing. This button is disabled until after the Stop button is clicked.
Stop Click this button to stop the selected special test in progress. This will change the state of the test. The Stop button is disabled until the Start button has been clicked.
Stop All Click this button to stop all special tests in progress. This button is enabled only when one or more tests are activated.