DAELIM Roadwin R Service Manual page 81

CHECKING FOR A FAULT CODE BY OXYGEN(O
If the voltage value is abnormal,
Check to see if the ECU coupler is loose or if there is bad contact.
Check the 'B/B'' electric wire, 'G/W' electric wire to see if they have been
broken or have short- circuited.
5) If the voltage value is normal, turn off the ignition key.
Measure the Resistance of oxygen (O2) Sensor heater : about 9[ ], about 22
Measuring terminal (side of wire-harness) :
(B/BR : BLACK/BROWN) ~
Remarks : Measuring unit of Resistance : Resistance 'R'[ ]
6) If the measured resistance is abnormal,
Replace the oxygen(O2)sensor with new one and recheck it.
If the measured resistance is normal,
Check the 'B/B'' electric wire, 'G/W' electric wire to see if they have been
broken or have short- circuited.
If the electric wire is no problem, the ECU is broken.
Replace the ECU with new one, and recheck it.
CHECKING FOR A FAULT CODE BY OXYGEN(O
1) Turn off the ignition key
2) Check the O2(oxygen) coupler is loose, or bad.
If there is no defect, measure the input voltage of O2(oxygen)
3) The wire-harness to checck the ECU is connected to the ECU with a coupler.
refer to the ECU assembly/disassembly.
4) Turn on the ignition key
5) Measure the oxygen(O2)sensor voltage of wire harness to check ECU.
Measuring terminal:
Output voltage of oxygen(O2) sensor : 0.1~0.8[V]
Remark : Measuring unit of voltage : Voltage[V]
Assembly of oxygen(O2)sensor : 4.08 ~ 6.12[kgf
If the measured voltage is normal,
Check the 'B/R' electric wire, 'V' electric wire, 'V/B' electric wire to see if they have been broken or
have short- circuited if there is a bad contact of terminal No. 2, No. 12 of ECU coupler.
If there is no problem in wires, ECU is broken.
Replace the ECU with new one, and recheck it.
If the measured voltage is abnormal,
Check the 'V' electric wire, 'V/B' electric wire, 'W/B' electric wire to see if they have been
broken or have short- circuited.
6) After fault repaired, To erase the memorized fault code in the ECU is refer to how to remove the fault code(5-10)
oxygen(O2)3 terminal of sensor coupler
ECU No.34(G/W :GREEN/WHITE)
ECU No.12(V :VIOLET)~
EMS(Engine Management System)
)SENSOR HEATER
2
)SENSOR LAMBDA SIGNAL
2
ECU No.2(V/B:VIOLET/BLACK)
5-29