DAELIM VJF125 Service Manual - page 53
EMS(Engine Management System)
5-2
1.CAUTION WHEN REPAIRING THE EMS PARTS.
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If the fuse is short-circuited, find out the cause and repair, replace with the fuse having the specified capacity.
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Do not use the electlic wires or others instead of the fuse.
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Do not drop or throw the EMS parts, because these parts may be damaged by the impact of the drop.
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Do not touch the ECU terminal, because it may be damaged by the static.
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The ignition key off before assembly and disassembly of the ECU coupler.
Otherwise, it might be damage to ECU.
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Do not connect adversely the polarity of battery, otherwise, it might be broken the EMS parts
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While engine operating, do not disassemble the battery terminal.
Otherwise, it might cause damaged the EMS parts.
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Use the specified voltmeter and resistance meter.