Answer: Click the master scanner active taskbar icon, then the pop-up list will display the applications(interfaces) opened.
Question: Why can’t I do operation in current interface of x431 master ?
Answer: There are two possible causes:
1.
Your current interface of x431 master scanner
has exited illegally, In this situation, you may not see the
name of the
application(interface) in the
pop-up list when you click the active taskbar icon. launch X431 diagun
2. The launch x-431 master system is busy, please wait patiently, or click the x-431 master scanner active taskbar icon to switch to another application.
Question Related to Vehicle
Question: Why does the x431 master tool screen flickers during engine starting?
Answer: It is caused by the electromagnetic interference. No problem with x431 master.
Question: Why is operation interrupted during diagnosis?
Answer: It may be caused by electromagnetic interference or incorrect connection of connector.
Question: Why is there no response from vehicle ECU at communication?
Answer: Make sure that the voltage of vehicle battery, ignition timer and idle speed are in standard range; the throttle is in the closed position; and all electric devices, such as A/C, headlight, stereos etc, are turned off. Refer to the section ”conditions for test”.
Question: x-431 master tool Some systems can not be diagnosed why ?
Answer: The diagnostic socket for the system on some early vehicle may be separated. Refer to the vehicle instruction manual.
Question: No trouble code is found, Why ?
Answer: It may be caused by the shared circuit. Find the nearest trouble code and circuit for analysis.
Question: Why are there too many trouble codes?
Answer: It may be caused by poor contact or poor grounding. Make sure that the vehicle model/year is selected correctly and the vehicle is equipped with the system.