USB-Link Troubleshooting Procedure

USB-Link, USB-Link 2, and USB-Link 3 Troubleshooting Procedure

1. Open the NEXIQ Device Tester.
   Go through each drop-down menu one at a time and click Test for each selection.

2. Verify data communication.
   Confirm that you are receiving data on:

   • J1708

   • J1939 Channel 1

   • J1939 Channel 2

3. Important:
   If you are not receiving data in the Device Tester, you will not receive data in any program that uses the USB-Link.

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Basic Checks

• Bypass any electronic driver log (if applicable).

• Ensure the vehicle key is in the ON position.

• Replace the USB cable between the laptop and the NEXIQ adapter.

• Check (pin out) the 6-pin or 9-pin vehicle diagnostic port to verify proper voltage and signal at the connector.

• Make sure that you have the correct driver install for your adapter.

• Cloned USBLINK2 adapters use the original USBLINK driver. If you need this drive email us HeavyTruckSoftware@gmail.com

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