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Caterpillar ET 2019C (replaces CAT ET 2018b, 2019A,2019B) Electronic Technician Diagnostic Software:
For Cat Electronic Technician to work with the Communication Adapter 3, the settings must be changed to select the Communication Adapter 3 as the Communication Interface Device:
Step 1 Start Cat Electronic Technician.Step 6 Select Cat Comm Adapter 3 (RP1210) and click OK.