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Test the Connection to the Vehicle

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Use the Device Tester to test the connection between the USB-Link*  and the vehicle. At startup, the Device Tester checks for any NEXIQ

drivers installed on the PC.
-Download NEXIQ Product Driver here: NEXIQ Driver

Access the Device Tester from the Windows task-bar
1. Prepare your PC, and connect NEXIQ device to Diagnostic Port/Connector on unit.
2. Click Start and then select All Programs NEXIQ Device Tester, or through shortcut Device Tester on desktop.

3. Use the drop-down button in the Device box to select the appropriate device (for example: USB-Link). The Device box lists all the

devices supported by the NEXIQ drivers installed on the PC.

4. Use the drop-down button in the Protocol box to select the appropriate protocol (for example: J1708). The Protocol box lists only the

protocols supported by the device selected in the Device box.

5. Press the Start Test button.
6. The Device Tester screen is refreshed, and data received from the vehicle bus is displayed in the Bus Messages window.

NOTE: The window in the lower portion of the screen displays a list of all systems seen on the bus. It is used for J1708 and J1939 only. For all other protocols this window will be unavailable (i.e., NOT USED). For J1708, the window title reads MIDs Seen. For J1939, the window title reads Source Addresses Seen.
Preparing to Use the Heavy Duty Truck diagnostic Scanner USB-Link?
7. If the Connection Indicator button is red (i.e., Not Connected), do one of the following:
For wireless connection using Bluetooth technology:
*  In the Device list, make sure that the heading is BT USB-Link (Protocol desired).
*  Check to ensure that the connections between the USB-Link*  and the vehicle are secure (i.e., the Diagnostic Connector).
*  Check to make certain that the Power LED on the USB-Link*  is illuminated.
*  Check to make sure you are paired with devices.

For wired connection using a USB cable:
*  In the Device list, make sure that the heading is USB-Link (Protocol desired).
*  Check to ensure that the connections between the USB-Link*  and PC are secure (i.e., the USB cable).
*  Check the connections between the USB-Link*  and the vehicle (i.e., the Diagnostic Connector).
*  Check to make certain that the Power LED on the USB-Link*  is illuminated.

8. Click Stop Test to end the test, or select another device to test.