If other power equipments like welding guns
need to be used, the storage battery and ECM
terminals must be disconnected.
Do not pull out the spark plug wire lead to check if
the ignition system is working or not because the fu
sprayed out but not used will burn in the three-way
catalyst and soon cause damage;
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See if the vehicle is equipped with a computerized
anti-stealing device during ECM replacement. If it is,
cut off the power supply to the anti-stealing device
and then proceed to replace the ECM, otherwise, the
new ECM will be locked by the anti-stealing device
and unable to work on other vehicles;
The components shall not be subject to heavy impact
during fixing and unfixing;
Do not take off the ECM cover;
Do not touch the sensor with water or other liquids
while replacing and unfixing the oxygen sensor;
Do not run the fuel pump without fuel for long; do not
run it with fuel in the air;
Most electronic injection components can’t be
repaired and shall be replaced if damaged;
Shielded spark plug and high-voltage cable shall be
used for the system. Unshielded spark plug and high-
voltage cable will not only give off disturbing signals,
but also generate a negative influence on the
ignition coil drive module in the ECM and
even damage the ECM.
Do not operate any engine mechanism
(including the throttle) during engine startup.
The clutch may be detached in cold weather.
If the engine fault indicator light is turned on
during engine running, the cause must be
identified and eliminated as soon as possible.