HYOSUNG 2010 ST7 Service Manual page 157

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.
Clutch lever
switch continuity
Tester knob indication : Resistance (
7) Measure the voltage between
the LY wire of the wiring harness's GP switch cou-
pler, and measure the voltage between
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 (+ )
Is OK?
● If wire and connection are OK,
intermittent trouble or faulty ECU.
YES
● Recheck each terminal and wire
harness for open circuit and poor
connection.
Replace the GP switch or Clutch
NO
lever switch with a new one.
Ω
0
(GR - Br)
Ω Ω
)
of the ECU and
G18
of the
G18
EI SYSTEM DIAGNOSIS 4-50
Gray
ECU Coupler
②
Black