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Information Diagnostic Trouble Codes
9.2 Diagnostic Trouble Codes
Information for locating, diagnosing, and repairing diagnostic trouble code (DTC) problems is
located here. Information is specific to the identified vehicle.
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To access DTC information:
1. Double tap the Diagnostic Trouble Codes icon.
A Data Category list displays ( Figure 9-3 ).
Figure 9-3
Sample DTC category list
The number of categories available varies by make, model, and year. Select Cancel at the
bottom of the list to return to the previous screen.
2. Select a category from the list
NOTE:
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Additional information about the test vehicle is needed to ensure the correct information displays
in some instances. If so, a window with a list of optional equipment opens when a category is
selected. Highlight all of the correct options installed on the test vehicle, then select the
Accept
icon to continue.
The Diagnostic Trouble Codes screen opens.
9.2.1 Diagnostic Trouble Codes Screen
The DTC screen is divided into two main fields; the selection field on the left hand side and the
information field on the right hand side. The selection field, which determines what information is
shown in the information field, typically offers the following choices:
•
Data Link Connector —this is the default selection that is active when diagnostic trouble
codes is selected. The location of the data link connector (DLC) is shown in a graphic below
the selection field.
•
General Information —provides information such as common terminology, general test
conditions, and standard fault descriptions.
•
Accessing and Erasing —provides information on retrieving and clearing DTCs from the
electronic control module (ECM).
•
Trouble Code Identification —provides a definition and probable cause for DTCs.