A: It may be caused by a slackened connector. Please turn off the machine,
rmly connect the connector, and switch on the machine again.
Q: Why X-431 PAD fails in communication with ECU?
A: ECU does not respond. Please try to use the latest update tool to upgrade to
the latest diagnostic program.
11.3 About system
Q: Main screen blinks at the moment when engine ignition.
A: It results from electromagnetic interference and this is normal phenomena.
Q:Diagnose interrupted during diagnosing process.
A: Caused by electromagnetic disturbing or poor connecting.
Q: There is no response when communicating with on-board computer.
A: Please conrm the proper voltage of power supply and check if the throttle
has been closed, the transmission is in the neutral position, and the water is
in proper temperature.
Q: The systems equipped with the vehicle can not be diagnosed.
A: DLC of some early models is separated; refer to User’s Manual for details.
Q: The fault code storage is blank.
A: Usually, it’s the “suquela” for shared circuit. Please locate and analyze the
most similar fault code and its circuit.
11.4 Other questions
Q: The thermal paper can no be fed after being loaded.
A: It is possible to install it improperly. Refer to Chapter 2.3 Printer in the User’s
Manual or consult from our branch ofces or dealers.
Q: How long is the standby time of battery?
A: Recharge it correctly. In general, the charging time is about 6 hours for new
machine. Once the charing icon disappears, it indicates it is fully charged. If
standby time is set, it can last for about 7 hours.
Q: The screen is too white and characters cannot be seen. What is the
reason and what should I do?
A: It may be caused by improper contrast. Please refer to the section “Adjust
Brightness” to adjust the contrast.
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