CAT Caterpillar ET4 Diagnostic & Programming Tool

The CAT Caterpillar ET4 Diagnostic & Programming Tool (Caterpillar Communication Adapter CA4) is the latest professional diagnostic interface designed for servicing Caterpillar and Perkins engines and equipment. It enables communication between a computer running Caterpillar Electronic Technician (CAT ET) software and the machine’s Electronic Control Modules (ECMs).

The Communication Adapter 4 (CA4) is the official communication device recommended by Caterpillar. It supports the CAT Data Link (CDL) protocol, allowing technicians to perform advanced diagnostics, troubleshooting, and programming operations on Caterpillar equipment.

With high-speed communication and reliable connectivity, the CAT ET4 tool is widely used by heavy equipment workshops, fleet maintenance centers, and Caterpillar service technicians.

Key Features

• OEM-Level Diagnostics: Fully compatible with Caterpillar Electronic Technician (CAT ET) software.

• CAT Data Link (CDL) Support: Required protocol for accurate communication with Caterpillar ECMs.

• Advanced ECU Diagnostics:

  • Read and clear diagnostic trouble codes (DTC)

  • Monitor real-time engine parameters

  • Diagnose existing and potential system faults

• ECM Programming & Configuration:

  • Configure engine parameters

  • Perform ECU programming and calibration

  • Update ECM software

• High-Speed Communication: Reliable connection between the service tool and the equipment ECM.

• Multiple Connectivity Options: Supports USB and communication data link connections.

• Professional Workshop Tool: Designed for heavy-duty service environments.

Applications

The CAT ET4 diagnostic tool supports a wide range of Caterpillar equipment including:

• Excavators

• Wheel loaders

• Bulldozers

• Mining equipment

• Generators

• Marine engines

• Perkins-powered machinery

Package Contains

• CAT Caterpillar Communication Adapter 4 (CA4)

• USB communication cable

• Diagnostic cables for CAT equipment

• Carrying case

• Software activation for CAT ET