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X-431 PRO3 SE User Manual
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The tested system with fault code appears in red and the system functioning
properly displays in black (normally).
Note: Diagnostic Trouble Codes or Fault Codes can be used to identify which
engine systems or components that are malfunctioning. Never replace a part based only
on the DTC definition. Retrieving and using DTCs for troubleshooting vehicle
operation is only one part of an overall diagnostic strategy. Follow testing procedures
(in vehicle’s service manual), instructions and flowcharts to confirm the locations of the
problem.
On-screen Buttons:
Enter:
Tap to enter the diagnostic function selection screen.
(Search):
Highlight certain diagnostic trouble code and tap it to retrieve it in
the search engine.
Report:
Tap to save the diagnostic result as a health report.
