82 VL1500K5 (’05-MODEL)
“C31” (P0705) GP SWITCH CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Remove the secondary gear case cover.
(
!
VL1500 Service Manual 3-7)
2) Turn the ignition switch OFF.
3) Check the GP switch coupler for loose or poor contacts.
If OK, then measure the GP switch voltage.
4) Support the motorcycle with a jack.
5) Fold the side-stand to up position.
6) Make sure the engine stop switch is in the “RUN” position.
7) Insert the needle pointed probe to the lead wire coupler.
8) Turn the ignition switch ON.
9) Measure the voltage at the wire side coupler between R/B
wire and B/G wire, when shifting the gearshift lever from 1st to
Top.
"
GP switch voltage: 0.6 V and more
(
+
R/B –
-
B/G)
#
09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
)
Tester knob indication: Voltage (
+
)
DETECTED CONDITION
POSSIBLE CAUSE
No Gear Position switch voltage.
Switch voltage is not within the following range.
Switch voltage > 0.6 V
• Gear Position switch circuit open or short.
• Gear Position switch malfunction.
• ECM malfunction.
Side-stand switch
Neutral indicator
light
N
1
5
4
2
3
ECM
GP switch
Side-stand relay
Ignition
switch
BI
R
B
R/B
B/G
GP
To engine stop switch
1
1
V
SA
MP
LE
