C31" Gp Switch Circuit Malfunction - HYOSUNG GV250 EI Service Manual

"C31" GP SWITCH CIRCUIT MALFUNCTION

C31
DETECTED CONDITION
GP switch voltage is out of the specified range for 2
sec. and more.
<
0.15 V Switch voltage
▣ ▣ INSPECTION
1) Remove the frame cover.
2) Turn the ignition switch "OFF" position.
3) Check the GP switch coupler for loose or poor
contacts.
If OK, then measure the GP switch resistance.
4) Park the motorcycle on a firm, flat surface
vertically.
5) Turn the side-stand to up-right position.
6) Make sure the engine stop switch is in the "
position.
7) Insert the needle pointed probes to the GP switch
coupler.
8) Turn the ignition switch "ON" position.
9) Measure the resistance at the wire side coupler
between GL wire and L wire, when shifting the
gearshift lever from 1st to Top.
GP switch resistance
Tester knob indication : Resistance (
Is the resistance OK?
● GL or L wire open or shorted to
ground, or poor
connection of ECU coupler.
● If wire and connection are OK,
YES
intermittent trouble or faulty ECU.
● Recheck each terminal and wire
harness for open circuit and poor
connection.
Open or short circuit in the GL or L
NO
wire.
CODE
<
3.93 V
㏀
100 Ω ~ 2.0
(GL - L)
㏀ ㏀
or
F2 E3
[ 3 1 3
POSSIBLE CAUSE
● GP switch circuit open or short.
● GP switch malfunction.
● ECU malfunction.
"
)
53
EI SYSTEM DIAGNOSIS 4-1-38
CODE
1 3 1 ]
GP switch
ECU Coupler
F2
E3