C27" Isc Solenoid Range Abnormal - HYOSUNG GV250 EI Service Manual

4-1-37 EI SYSTEM DIAGNOSIS

"C27" ISC SOLENOID RANGE ABNORMAL

C27
DETECTED CONDITION
ISC solenoid's step is out of the specified range.
O step Solenoid step
▣ ▣ INSPECTION
1) Remove the front seat.
2) Turn the ignition switch "OFF" position.
3) Check the ISC solenoid coupler for loose or poor
contacts.
4) Turn the ignition switch "ON" position to check the
ISC solenoid operation.
[ When Ignition switch "OFF" ]
[ When Ignition switch "ON" ]
Is OK?
● LY, G, BBr or YL wire loose or
poor contacts on the ISC solenoid
coupler, or poor
connection of ECU coupler.
K4
YES
● If wire and connection are OK,
intermittent trouble or faulty ECU.
● Recheck each terminal and wire
harness for open circuit and poor
connection.
Replace the ISC solenoid with a
NO
new one.
CODE
[ 2
250 step
, , or
K1 K2 K3
7
POSSIBLE CAUSE
● ISC solenoid malfunction.
● ISC solenoid's step is out of the specified range.
● ECU malfunction.
K2
K3
K4
52
CODE
2 7 ]
ISC solenoid
K1
ECU Coupler