HYOSUNG 2010 ST7, Service Manual

Page: 157 / 298

EI SYSTEM DIAGNOSIS 4-50
6) Disconnect the clutch lever switch coupler
②
and
then check the continuity between GR wire and Br
wire when the squeezing the clutch lever.
YES
NO
● 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 GP switch or Clutch
lever switch with a new one.
Is OK?
ECU Coupler
Gray Black
Clutch lever
switch continuity
0
Ω
(GR - Br)
7) Measure the voltage between of the ECU and
the LY wire of the wiring harness’s GP switch cou-
pler, and measure the voltage between of the
ECU and the GR wire of the wiring harness’s
clutch lever switch coupler.
If the measurement is out of 0.4 ~ 0.7 V, replacce
the DIODE #3 with a new one
Tester knob indication : Diode test (+ )
G18
G18
②
Tester knob indication : Resistance (
Ω Ω
)