HYOSUNG 2010 ST7, Service Manual

Page: 145 / 298

EI SYSTEM DIAGNOSIS 4-38
“0201” or “0202” FUEL INJECTOR CIRCUIT MALFUNCTION
▣ ▣
INSPECTION
◈ Step 1
1) Remove the fuel tank and frame cover.
2) Turn the ignition switch “OFF” position.
3) Check the injector couplers NO.1
① and NO.2 ②
for loose or poor contacts.
If OK, then measure the injector resistance.
4) Disconnect the injector couplers NO.1
①
and
NO.2 ② and measure the resistance between ter-
minals.
5) If OK, then check the continuity between injector
terminals and ground.
DETECTED CONDITION POSSIBLE CAUSE
☞ ☞
Refer to page 4-25
● Injector circuit open or short.
●
Injector malfunction.
● ECU malfunction.
Injector resistance
11.4 ~ 12.6
Ω
at 20
℃
(68
℉
)
Injector continuity
∞
Ω
(Infinity)
Are the resistance and continuity OK?
YES
NO
Go to Step 2
Replace the Injector with a new
one.
①
② ①
②
Tester knob indication : Resistance (
Ω Ω
)
Tester knob indication : Resistance (
Ω Ω
)
0201
0202
LCD (DISPLAY) INDICATION “FI” CHECK LAMP INDICATION
[ 0 2 0 1 0 2 0 1 ]
[ 0 2 0 2 0 2 0 2 ]