User's Manual

LAUNCH X-431Diagun User's Manual
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contact LAUNCH by visiting the website at www.cnlaunch.com, or writing to
LAUNCH TECH. CO., LTD.，Launch Industrial Park, North of Wuhe Avenue,
Banxuegang, Bantian, Longgang, Shenzhen, Guangdong，P.R.China, to
request written permission to use Materials on this manual for purposes or
for all other questions relating to this manual.
General Notice
z Other product names used herein are for identification purposes only
and may be trademarks of their respective owners. LAUNCH
disclaims any and all rights in those marks.
z There is a possibility that this unit is inapplicable to some of the
vehicle models or systems listed in the diagnostic section due to
different countries, areas, and/or years. Do not hesitate to contact
LAUNCH if you come across such questions. We are to help you
solve the problem as soon as possible
Precautions on Operating Vehicle’s ECU
z Do not disconnect the vehicle inner consumer when the ignition switch
is on. High voltage transients may encounters at the moment of
disconnecting, and thus may damage sensors and ECU.
z Protect the computer from magnetic object (such as wireless speaker)
z Do cut off the power supply of ECU system before welding on the
vehicle.
z Pay more attention to ECU and sensors when operation is next to
them.
z Ground yourself when you disassemble PROM, otherwise ECU and
sensors will be damaged by static.
z Do not use the pointer ohm meter instead of DMM for testing ECU and
sensor without special requirement.
z Do not test electric devices in relation with ECU with a test lamp unless
otherwise expressly provided.
z Do wear a metal ground strip that one end around your wrist and the
other to the vehicle body when you get in and out the vehicle.