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 diagnostic 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.

Several manufacturers use security gateway modules to protect the vehicle communication against unauthorized access. This means that unrestricted vehicle communication between the diagnostic device and the vehicle is possible only through prior activation. To select and diagnose a vehicle with a security system in the usual manner and without restrictions, follow the steps in the section Cyber Security Management.

The following ECU functions are available under >Diagnostics< in the main menu:

Proceed as follows to prepare vehicle diagnostics:

  1. Open the vehicle selection with > Vehicle selection or directly using the drop-down menu on the left and select a vehicle.

  2. 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.

  3. NOTICE

    notice

    Danger of short circuit and voltage peaks when connecting the OBD plug

    Danger of destruction of automotive electronics

    Only connect the the OBD plug to the vehicle when the ignition is switched off. Then switch on the ignition again so that the VCI has power supply.

  4. Plug in the OBD plug in the vehicle's diagnostic connector.
  5. Select >OBD diagnostics< in the main menu.
  1. Now you can select the type of diagnostics.