Is the NEXIQ USB Link 2 compatible with CAT engines? MERCEDES-BENZ

Is the NEXIQ USB Link 2 compatible with CAT engines?

Yes, the NEXIQ USB-Link 2 is compatible with CAT (Caterpillar) engines, but there are a few important things to keep in mind:

Compatibility Overview

The USB-Link 2 is a universal diagnostic interface that works with RP1210A/B-compliant software, which includes CAT Electronic Technician (CAT ET).

To diagnose CAT engines, you must pair the USB-Link 2 with CAT ET software—the tool itself does not come with OEM software.

Requirements for CAT Compatibility

1.CAT ET Software

You need Caterpillar Electronic Technician (CAT ET)installed on your PC.

The software communicates with CAT ECMs using the USB-Link 2.

2. Proper Adapter Cable

CAT engines typically use a 9-pin Deutsch connector, but some older models may use a 14-pin or 70-pin.

Make sure your cable matches the CAT diagnostic port.

3. RP1210 Protocol Selection

In CAT ET, select the USB-Link 2 as your communication device under Utilities > Preferences > Communications.

Choose the correct communication protocol (usually J1939 or J1708 for CAT engines).

Limitations to Be Aware Of

The USB-Link 2 works with CAT ET only if configured properly.

It may not support some proprietary CAT functions as well as CAT’s own communication adapters like the CAT Comm Adapter III.

Certain newer Caterpillar equipment using Advanced Productivity Monitoring Systems (APMS) or Ethernet-based communication** may not be fully supported.

Bottom Line

Yes, NEXIQ USB-Link 2 works with CAT engines, provided you have CAT ET software and the correct cables and protocol settings. It’s a cost-effective alternative to CAT’s own Comm Adapter for most basic and advanced diagnostics on Caterpillar engines.