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4.4.1.3
Main Section
The Main Section of the screen varies according to the stage of operations, which may
display vehicle identification selections, the main menu, test data, messages,
instructions, and other diagnostic information.
4.4.1.4
Function Buttons
The displayed Function Buttons vary depending on the stage of operations. These
buttons can be used to navigate menus, to save or clear diagnostic data, to exit
scanning, and to perform a number of other control functions. The use of these buttons
will be discussed in detail in the following sections of the corresponding test operations.
4.4.2 Screen Messages
Screen messages will appear when additional input is needed before proceeding.
There are three main types of on-screen messages: Confirmation, Warning, and Error.
4.4.2.1
Confirmation Messages
Confirmation messages inform you when you about to perform an action that cannot be
reversed or when an action has been initiated and confirmation is needed to continue.
When a user-response is not required to continue, the message displays briefly.
4.4.2.2
Warning Messages
This type of messages displays a warning that a selected action may result in an
irreversible change or loss of data. An example of this type of message is the “Erase
Codes” message.
4.4.2.3
Error Messages
Error messages display when a system or procedural error has occurred. Examples of
possible errors include cable disconnection or communication interruption.
4.4.3 Making Selections
The Diagnostics application is a menu-driven program that presents a series of choices.
As a selection is made, the next menu in the series displays. Each selection narrows
the focus and leads to the desired test. Tap the screen to make menu selections.
4.5 Diagnostic Function Entrance
The Diagnostics application enables a data link to the electronic control system of the
test vehicle for vehicle diagnosis. The application performs function tests, retrieves
