C12" Pick-Up Coil Circuit Malfunction - HYOSUNG GV250 EI Service Manual

"C12" PICK-UP COIL CIRCUIT MALFUNCTION

C12
DETECTED CONDITION
The pick-up coil signal does not reach ECU for more
than 3 sec. after ECU receiving the ignition switch
signal.
▣ ▣ INSPECTION
1) Remove the frame cover.
2) Turn the ignition switch "OFF" position.
3) Check the pick-up coil coupler ① for loose or poor
contacts.
If OK, then measure the pick-up coil resistance.
4) Disconnect the pick-up coil coupler ① and
measure the resistance.
Pick-up coil resistance
Tester knob indication : Resistance (Ω Ω )
5) If OK, then check the continuity between each
terminal and ground.
Pick-up coil continuity
Tester knob indication : Resistance (Ω Ω )
Are the resistance and continuity OK?
● L or G 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.
● Loose or poor contacts on the pick-
up coil coupler or ECU coupler.
NO
● Replace the pick-up coil with a new
one.
CODE
[ 1
Ω
Approx. 85 ~ 105
(G - L)
∞
Ω (Infinity)
(G - Ground)
(L - Ground)
or
J2 J3
2 1 2
POSSIBLE CAUSE
● Metal particles or foreign materiel being attached
on the pick-up coil and rotor tip.
● Pick-up coil circuit open or short.
● Pick-up coil malfunction.
● ECU malfunction.
①
J2
J3
39
EI SYSTEM DIAGNOSIS 4-1-24
CODE
1 2 ]
ECU Coupler