C15" Et Sensor Circuit Malfunction - HYOSUNG COMET 250/R FI Service Manual

"C15" ET SENSOR CIRCUIT MALFUNCTION

C15
DETECTED CONDITION
Output voltage is out of the specified range.
0.1 V �
Sensor voltage < 4.6 V
▣ ▣ INSPECTION
◈ Step 1
1) Turn the ignition switch "OFF" position.
2) Check the ET sensor coupler for loose or poor
contacts.
If OK, then measure the ET sensor voltage at the
wire side coupler.
3) Disconnect the coupler and turn the ignition switch
"ON" position.
4) Measure the voltage between G wire terminal and
ground.
5) If OK, then measure the voltage between G wire
terminal and BW wire terminal.
ET sensor voltage
Tester knob indication : Voltage (
Is the voltage OK?
YES Go to Step 2.
● Loose or poor contacts on the
ECU coupler.
NO
● Open or short circuit in the G
wire or BW wire.
CODE
[ 1
4.5 ~ 5.5 V
( � G - � Ground )
( � G - �
BW )
)
5 1
POSSIBLE CAUSE
● ET sensor circuit open or short.
● ET sensor malfunction.
● ECU malfunction.
29
FI SYSTEM DIAGNOSIS 4-1-20
CODE
5 1 ]