Caterpillar Electronic Technician (Cat ET) is diagnostic software required to communicate, diagnose and service electronically controlled Caterpillar engines and machines.
When connected to an Electronic Control Module (ECM), a technician has the ability to diagnose existing and potential problems,
configure the product, and obtain data for analysis.
Here is the latest version of Caterpillar Electronic Technician 2021A. ( 513 MB )
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