DAELIM VJF125 Service Manual - page 54
EMS(Engine Management System)
5-2
1.CAUTION WHEN REPAIRING THE EMS PARTS.
If the fuse is short-circuited, find out the cause and repair, replace with the fuse having the specified capacity.
Do not use the electlic wires or others instead of the fuse.
Do not drop or throw the EMS parts, because these parts may be damaged by the impact of the drop.
Do not touch the ECU terminal, because it may be damaged by the static.
The ignition key off before assembly and disassembly of the ECU coupler.
otherwise, it might be damage to ECU.
Do not connect adversely the polarity of battery, otherwise, it might be broken the EMS parts
While engine operating, do not disassemble the battery terminal.
otherwise, it might cause damaged the EMS parts.
Use the specified voltmeter and resistance meter.