C22" Oxygen Sensor Circuit Malfunction; C24 " " O O R R " " C25 " " Ignition Coil Malfunction - HYOSUNG COMET 250/R FI Service Manual

"C22" OXYGEN SENSOR CIRCUIT MALFUNCTION

C22
DETECTED CONDITION
Oxygen sensor signal is not input in ECU since then
more than 120 sec. after the engine run.
▣ ▣ INSPECTION
1) Remove the front seat and frame cover.
2) Turn the ignition switch "OFF" position.
3) Check the Oxygen sensor coupler ①
poor contacts.
Is OK?
● BR or BW wire open or shorted
to ground, or poor �
connection.
● If wire and connection are OK,
YES
intermittent trouble or faulty ECU.
● Recheck each terminal and wire
harness for open circuit and poor
connection.
NO Replace the Oxygen sensor.
"C24" or "C25" IGNITION COIL MALFUNCTION
� Refer to the IGNITION COIL for details. (Refer to page 5-3)
C24
C25
CODE
[ 2
for loose or
①
or ⑤
CODE
[ 2
[ 2
2 2 2
POSSIBLE CAUSE
● Oxygen sensor, Oxygen sensor heater circuit open
or short.
● Oxygen sensor, Oxygen sensor heater malfunction.
● ECU malfunction.
�
4 2
5 2
35
FI SYSTEM DIAGNOSIS 4-1-26
CODE
2 2 ]
⑤
ECU Coupler
CODE
4 2 ]
5 2 ]