Preparing Vehicle Diagnostics

The selection of the correct vehicle and sufficient vehicle electrical system voltage (>12 V) are two basic preconditions for trouble-free vehicle diagnostics. The device provides assistance to simplify the selection, e.g. indicating the installation position of the diagnostic port, vehicle identification through VIN or indication of the battery voltage.

Proceed as follows to prepare vehicle diagnostics:

  1. Start the mega macs ONE application.
  2. Select a requested vehicle in > Vehicle selection.

  3. CAUTION

    caution

    Rolling of vehicle

    Risk of injury or material damages

    Proceed as follows before startup:

    1. Apply the parking brake.

    2. No gear is engaged.

    3. Regard the window with information and instructions.

  4. NOTICE

    notice

    Danger of short circuit and voltage peaks when connecting the HG-VCI ONE!

    Danger of destruction of automotive electronics

    Switch off ignition before connecting the HG-VCI ONE to the vehicle.

  5. Insert the HG-VCI ONE into the vehicle's diagnostic interface.
  6. Both LEDs of the HG-VCI ONE are permanently green. The HG-VCI ONE is ready for operation.
  7. Select the requested diagnostic type with .
  1. Preparation for vehicle diagnostics is completed and you can start it for a selected vehicle with now.