2021A is an upgraded version of 2020C , A represents the first quarter, and C is the software updated in the third quarter.
2021A Cat ET software as Cat Caterpillar ET 2018C 2019A 2019C 2020C Software update version, 2021A Caterpillar Electronic Technician softwarer With CAT ET 3 Cat caterpillar adapter 3 support caterpillar diagnostic till 2021.
Lenovo X220 Laptop:
Screen Size: 12.5
Memory (RAM): Intel(R)Core(TM)I5 CPU
Processor Speed: 2.53GHz
Cat et Caterpillar Electronic Technician Software:
Support Multi-language：English, Chinese, Danish, French, German, Italian, Japanese, Portuguese, Russian, Spanish
Support caterpillar diagnostic till 2021
The list of supported CAT machines and engines can be found below::
Electric Power Generation
Marine Power Systems
Oil and Gas
Hydraulic Mining Shovels
Site Prep Tractors
Skid Steer and Compact Track Loaders
Underground – Hard Rock
Underground – Longwall
Underground – Room and Pillar
CAT Caterpillar ET Diagnostic Tool from Caterpillar provide the capability to access Electronic Control Modules (ECMs) from a personal computer. Many job-critical tasks can be performed with an electronic service tool. The user can display the status of a group of parameters (temperatures, pressures, etc.) simultaneously, view active and clear logged diagnostics, display the current configuration of an ECM and much more. The service tool works with a communication adapter to allow connection to an ECM. A graphical interface makes this software quick to learn and easy to use. A separate pull-down menu for each function enhances the “ease of use.” The version and identification of the ECM is automatically retrieved and is displayed on a summary screen when the program is started. Diagnostic tests and calibrations can also be performed.
CAT Caterpillar ET Diagnostic Tool enable service technicians to reprogram ECMs, reconfigure control system parameters, fine tune performance or diagnose the root cause of a failure the first time. These powerful tools allow service personnel to display and analyze vital performance and health information from any system quickly and accurately. The service tool communicates with any system using ATA (J1708), J1939 or the Caterpillar proprietary data link networks. The service tools provide information and features needed to help a technician diagnose problems and perform repairs and to customize and personalize the operation of a product. By allowing customers to design flexibility and configurability into a product, Caterpillar service tools stretch beyond the capabilities of preprogrammed ECMs or onboard display systems.
Display, graph and log status parameters.
Retrieve prognostic data including histograms, engine totals for fuel used and miles traveled.
View active diagnostics and clear logged diagnostics. View events where irregularities have occurred and have been logged by the ECM.
Perform calibrations to enhance performance of the ECM.
Customize the ECM with application-specific settings.
Over 100 custom Diagnostic, Information and Service features including:
– 2D and 3D Histogram plotting capability (engine software
– Custom Status screen groups
– Snapshots (Download and display snapshot data recorded by the
– Configuration Aid that allows upload/download of same
configuration to multiple control modules
Customised Service Tool Options
Customized service tool name
Customized graphics for the splash screen and icons
Aftermarket differentiation, i.e., the tool for one customer does not work on the product of another customer.
Licensing options for customer management
Flash programming of the ECM(s)
Training demonstration allows familiarity with the tool’s primary functions without connecting to ECM(s)
Perform customized diagnostic tests to identify harness problems, cylinder or component failures (Automatic Cylinder Cutout with cylinder to cylinder fueling comparison)
Caterpillar ET Software Function:
This diagnostic app allows you to:
View active and logged diagnostics.
View events where irregularities occurred and were logged by the ECM.
View the status of a group of parameters (temperatures, pressures, etc.) simultaneously.
Record and log performance data.
Graph a group of status parameters.
View the current configuration of an ECM.
Change ECM configurations.
Perform diagnostic tests.
Print reports and diagnostic results.
1.Used Lenovo X220 laptop
2.Real CAT et3 Comm Adapter III(it’s best quality cat et 3,not adapter 2,please check Communication port)
3.USB Cable (From device to your computer)
4.J1939/J1708 9PIN Cable (from device to your truck)
5.6PIN Cable (for old truck)
6.14PIN Cable(for new truck)
Original Factory Caterpillar ET3 Adapter III Compare With OEM Caterpillar ET Diagnostic Adpater III
1. Original Factory CAT ET can use once pluged, no need install the USB drive, the software can automatic realize it for ET3 Adapter, and the machine can automatic weld the high quality Circuit board, quality will be more reliable.
2. The OEM Caterpillar ET Diagnostic Adapter III need use USB Drive to install, and need choose the COM Port, and in the software ET also need choose ET2 then can be used.
The Details as follows:
What’s New – 2021A
No significant new features or feature enhancements
What’s New – 2020C
No significant new features or feature enhancements
What’s New – 2020B
Trainer Update – 299D3
The 299D3 Skid Steer Loader has been added to the Trainer application.
What’s New – 2020A
Product Status Report Updates
The Product Status Report has been updated to include throttle configuration information.
Built-in Factory Password Generator
The experimental feature allows you to decode (18-Bit passwords not supported) factory passwords
What’s New – 2019C
Indication of Selected Communications Adapter
The service tool now displays the selected communications adapter when the service tool is disconnected. The adapter name is displayed in the status area at the bottom right of the service tool window.
End of Support for Windows 7
Microsoft is ending extended support for Windows 7 as of January 2020. The service tool will be ending support for Windows 7 as of the 2020A release.