Checking Of Oxygen (O2) Sensor Circuit; Checking For A Fault Code By Oxygen (O2) Sensor Heater - DAELIM S2-125 Service Manual

1) CHECKING OF OXYGEN(O
Fault code number is displayed by MIL
Fault code number is displayed by MIL of the oxygen(O
CHECKING CIRCUIT
OXYGEN SENSOR
ECU
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) Disassemble the coupler of oxygen(O2)sensor and turn on ignition key
4) Measure input voltage of oxygen(O2)sensor coupler
Input voltage : Battery voltage[V]
Measuring terminal (side of Wire-harness) :
(B/BR : BLACK/BROWN) ~
Remarks : Measuring unit of Voltage : Voltage[V]
) SENSOR CIRCUIT
2
Coupler terminal is based on the side of Wire-Harness.
oxygen(O2)3 terminal of sensor coupler
EARTH
EMS(Engine Management System)
)sensor lambda signal.
2
2 : LAMBDA SENSOR GROUND
12 : OXYGEN SENSOR SIGNAL
34 : OXYGEN SENSOR HEATER
)SENSOR HEATER
2
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