1, in the repair welding of the frame, without disconnecting wires ECU. Because the frame for welding repairs, the power
High flow changes induced electromotive force is generated, an induced electromotive force which cause harm to the ECU through a line.
2, when the battery power loss, the use of direct charging charger directly SCR, SCR circuit generates the high harmonics, be
ECU damage.
3, the voltage is too high or because the charger, polarity reversal, or turn the ignition switch while charging even start the generator
4, the maintenance personnel disassemble the ECU, touch the electronic control unit interface or use the soldering iron without grounding function of the ECU
CMOS chip welding, can cause electrostatic breakdown CMOS chip is.
5, in the case where the engine is operated, the battery positive and negative suddenly disconnected, in which case the circuit will produce a high
Induced electromotive force, will make possible the electronic components inside the ECU breakdown.
6, due to the electrical system maintenance personnel are not familiar with, or negligence will pick the wrong line damage caused by the ECU.

EDITED BY ADMIN