DAELIM DAYSTAR VL125E, Service Manual

Page: 73 / 253

5-30
EMS(Engine Management System)
6)Turn on the ignition key.
7) Measure the voltage or tachometer of wire harness for ECU check.
Measuring terminal: B electric wire ~ G electric wire => Output Voltage: battery voltage
Measuring terminal: ECU No. 32(B/Y: BLACK/YELLOW) ~ G electric wire =>Output voltage:
9[V]~15[V]
Measuring terminal: ECU No. 32(B/Y: BLACK/YELLOW) ~
G Measuring the output voltage of electric
wire, using the PVA(peak voltage adapter) multi-tester tool.
Remark : Measuring unit of voltage : Voltage[V]
If the measured voltage is normal,
Check the ‘B/Y’ electric wire, ‘B’ electric wire, ‘G’ electric wire to see if they have been broken or
have short- circuited if there is a bad contact of terminal No. 32 of ECU coupler.
If there is no problem in wires, ECU has is broken.
Replace the ECU with new one, and recheck it.
If the measured voltage is abnormal,
Check the ‘B/Y’ electric wire, ‘B’ electric wire, ‘G’ electric wire to see if they have been
broken or have short- circuited.
8) After fault repaired, To erase the memorized fault code in the ECU is refer to how to remove the fault code(5-10)