Yamaha XVS950CU 2014 Service Manual page 470

Fault code No.
Item
4 Wire harness continuity.
5 Defective relay unit.
6 Defective neutral switch.
7 Faulty shift drum (neutral de-
tection area).
8 Malfunction in ECU.
42 (For ABS models)
Rear wheel sensor: no normal signals are received from the
A
rear wheel sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Open or short circuit → Re-
place the wire harness.
Between neutral switch con-
nector and sub-wire harness
coupler.
sky blue–sky blue
Between sub-wire harness
coupler and relay unit cou-
pler.
sky blue–sky blue
Between relay unit coupler
and ECU coupler.
black/yellow–black/yellow
Check the relay unit.
Refer to "CHECKING THE
RELAY UNIT (DIODE)" on
page 7-161.
Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 7-151.
Malfunction → Replace the
shift drum assembly.
Refer to "TRANSMISSION"
on page 5-80.
Replace the ECU.
7-79
FUEL INJECTION SYSTEM
Execute the diagnostic
mode. (Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever re-
leased: "OFF"
Correct indication → Go to
item 9.
Incorrect indication → Go to
item 5.
Execute the diagnostic
mode. (Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever re-
leased: "OFF"
Correct indication → Go to
item 9.
Incorrect indication → Go to
item 6.
Execute the diagnostic
mode. (Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever re-
leased: "OFF"
Correct indication → Go to
item 9.
Incorrect indication → Go to
item 7.
Execute the diagnostic
mode. (Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever re-
leased: "OFF"
Correct indication → Go to
item 9.
Incorrect indication → Go to
item 8.