HD OBD: Reading DTCs for a Selected Module
Purpose
To guide you on how to read DTCs for a selected module.
Step 1 - Select Module Selection from the System Menu, then press the ENTER ↵.
- The Available Systems screen will display.
Step 2 - Select the desired module, then press ENTER ↵.
- A “One moment please...” message will display while the requested DTCs are retrieved.
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If the scan tool fails to the selected module, a “Communication Error” message shows. Execute
the scan tool following the displayed instructions and attempt the process again.
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If the selected module does not support the “Read DTC” function, an advisory message
will display. Select the System Menu button to return to the System Menu.
Step 3 - When the scan is completed, the screen will display the number of DTCs recorded for the selected module.
NOTE: If the definition for the currently displayed code is not available, an advisory
message shows.
NOTE: In the case of long code definitions, a small arrow is shown in the upper/
lower right-hand corner of the code display area to indicate the presence of
additional information.
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If no codes are present, the message “No (system name) DTCs is presently stored in the
vehicle’s computer” shows.