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X-431Diagun User's Manual
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water is in proper temperature.
Question: The systems equipped with the vehicle can not be diagnosed.
Answer: DLC of some early models is separated; refer to User’s Manual for
details.
Question: The fault code storage is blank.
Answer: Usually, it’s the “suquela” for shared circuit. Please locate and
analyze the most similar fault code and its circuit.
Question: There is so much fault code.
Answer:
Usually, it’s caused by poor connection or fault circuit grounding.
Please check and confirm if the Year and make selected is correct or not
and if the vehicle is equipped with the right system.