HYOSUNG 2010 ST7, Service Manual

Page: 153 / 298

EI SYSTEM DIAGNOSIS 4-46
▣ ▣ INSPECTION
1) Remove the front seat.
2) Turn the ignition switch “OFF” position.
3) Check the ISC solenoid coupler for loose or poor con-
tacts.
4) Turn the ignition switch “ON” position to check the
ISC solenoid operation.
Is OK?
NO
YES
Replace the ISC solenoid with a
new one.
[ When Ignition switch “OFF” ]
[ When Ignition switch “ON” ]
DETECTED CONDITION
POSSIBLE CAUSE
☞ ☞
Refer to page 4-26
● ISC solenoid malfunction.
●
ISC solenoid’s step is out of the specified range.
● ECU malfunction.
● LY, G, BBr or YL wire loose or
poor contacts on the ISC solenoid
coupler, or poor , , or
connection of ECU coupler.
●
If wire and connection are OK,
intermittent trouble or faulty ECU.
● Recheck each terminal and wire
harness for open circuit and poor
connection.
0505
LCD (DISPLAY) INDICATION “FI” CHECK LAMP INDICATION
[ 0 5 0 5 0 5 ]
“0505” ISC SOLENOID RANGE ABNORMAL
ECU Coupler
Gray Black
G13 G12 G11
G1