LAUNCH X-431 PRO User’s Manual — Safety Precautions
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messaging, because it may cause a data communication interruption. If it
happens, it is abnormal and just try to re-do it.
Precautions on Operating Vehicle’s ECU
z Do not disconnect the vehicle inner consumer when the ignition switch is
on. High voltage transients may encounter at the moment of disconnecting,
which may damage the sensors and the ECU.
z Protect the computer from magnetic object.
z Do cut off the power supply of ECU system before welding on the vehicle.
z Pay more attention to the ECU and the sensors when the operation is next
to them.
z Ground yourself when you disassemble PROM, otherwise ECU and
sensors will be damaged by static electricity.
z Do connect ECU harness connector firmly, otherwise electronic elements,
such as IC inside ECU, will be damaged.
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