HYOSUNG MS3 250 Sercie Manual page 113

MALFUNCTION
CODE
Ignition coil (IG coil)
C24
Idle speed control
C27
C32 Fuel injector
Secondary air valve
C37
solenoid (SAV solenoid)
C41
Fuel pump relay
Oxygen sensor heater
C43
DETECTED ITEM
solenoid (ISC solenoid)
(O S heater)
2
DETECTED FAILURE CONDITION
When the IC of the ECU electric current gets 6A and more, C24
is indicated.
Ignition coil, wiring / coupler connection, power supply from the
battery.
The idle speed control solenoid step should be the following.
O step � solenoid step �
Without the above range, C27 is indicated.
Idle speed control solenoid, lead wire / coupler connection.
The fuel injector not comes in voltage from the battery, C32 is
indicated.
Injector, wiring / coupler connection, power supply to the
injector.
When the secondary air valve solenoid voltage is not input in
ECU, C37 is indicated.
Secondary air valve solenoid, lead wire / coupler connection.
No voltage is applied to the injector for 3 sec. after the contact
of fuel pump relay is turned "ON" position. Or voltage is applied
to the injector, when the contact of fuel pump is "OFF" position.
Fuel pump relay, connecting lead wire, power source to fuel
pump relay, fuel injector.
The oxygen sensor heater signal is not input in ECU.
Oxygen sensor heater, lead wire / coupler connection.
FI SYSTEM DIAGNOSIS 4-16
CHECK FOR
100 step