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.
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.
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.
If no codes are present, the message “No (system name) DTCs is presently stored in the
vehicle’s computer” shows.