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Install DataLogger on a medium-duty vehicle

Step 4 of 6 — Install on a medium-duty vehicle (Class 4–6) Install the DataLogger on a Class 4–6 vehicle by identifying the available diagnostic port and connecting the device directly or with the correct cable. Medium-duty vehicles can have an OBDII port, a 6-pin port, a 9-pin port, or multiple port types.

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Before you start

  • Confirm your vehicle is a Class 4–6 medium-duty vehicle.
  • Inspect the vehicle to identify which diagnostic port(s) are present before you begin (see Step 2 below).
  • Have the DataLogger device and any cables from your shipment ready.
  • The vehicle must be turned off before you begin.
  • If you have not yet received and inspected your shipment, complete Receive and inspect your device shipment first.

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Steps

  1. Turn the vehicle off.
  2. Locate and identify the diagnostic port(s). Medium-duty vehicles can have an OBDII port, a 6-pin port, a 9-pin port, or a combination. It is common to find multiple port types, especially on vehicles from manufacturers who also produce light-duty vehicles.
  3. Determine which port to use:
    • If only one port is present, use that port.
    • If the vehicle has an OBDII port and comes from a manufacturer who also builds light-duty vehicles, the OBDII port is the preferred choice for installation.
    • If no OBDII port is present, or if the vehicle is from a manufacturer that does not build light-duty vehicles, use the 6-pin or 9-pin port.
  4. Install the device based on port type:
    • OBDII port: Firmly install the device directly into the OBDII port. No cable required.
    • 6-pin or 9-pin port: Use the supplied cable.
      1. Firmly connect the device to the 16-pin end of the cable.
      2. Connect the 6-pin or 9-pin end of the cable to the vehicle diagnostic port.
  5. Check the LED indicators. The LEDs should illuminate, confirming the device is receiving power. LEDs may extinguish after a period of time — this is normal.
  6. Secure the device and cable. Tuck the assembly behind vehicle paneling. Use zip ties, double-sided tape, or Velcro to secure it in place. The device must remain stationary and must not be able to move freely — movement can cause rattling, rubbing, or connector wear.

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Extension and Y-cable situations

Extension cables and Y-cables are available for OBDII, 6-pin, and 9-pin ports:
  • Extension cable: Use when the diagnostic port is in an inconvenient location and the device or cable assembly would interfere with the driver or safe vehicle operation.
  • Y-cable: Use when the diagnostic port must remain accessible for other tools while the device is installed.
Contact Servinix support to request extension or Y-cables.

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Result / verify

The device LEDs illuminate (or illuminate briefly) after connecting, confirming it has power. Proceed to Verify device connection to confirm data is flowing to Servinix.

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Troubleshooting

  • Unsure whether to use the OBDII or 6/9-pin port when both are present: Default to OBDII if the vehicle manufacturer also builds light-duty vehicles. Otherwise, use the 6-pin or 9-pin port.
  • Cable connector does not fit the vehicle port: Do not force the connection. Contact Servinix support — you may have received the wrong cable type. See Device install cable mismatch.
  • LEDs do not illuminate: Confirm the cable is firmly connected at both ends. Try re-seating. If LEDs still do not light, see Device LEDs off after install.