Yamaha XVS950CU 2014 Service Manual page 445

Fault code No.
Item
3 Connection of main switch
coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
4 Connection of relay unit cou-
pler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
5 Wire harness continuity.
6 Defective sidestand switch.
7 Malfunction in ECU.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Indicated
Procedure
Probable cause of mal-
Item
function and check
19
Sidestand switch: a break or disconnection of the blue/black
lead of the ECU (engine control unit) is detected.
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Open or short circuit → Re-
place the wire harness.
Between sidestand switch
coupler and relay unit cou-
pler.
blue/green–blue/green
Between relay unit and ECU
coupler.
blue/yellow–blue/black
Execute the diagnostic
mode. (Code No. 20)
Shift the transmission into
gear.
Sidestand retracted: "ON"
Sidestand extended: "OFF"
Replace if defective.
Replace the ECU.
22
Intake air temperature sensor: open or short circuit detected.
Able to start engine
Able to drive vehicle
05
Displays the air temperature.
Compare the actually measured intake air temperature with the in-
dicated value.
Maintenance job
7-54
FUEL INJECTION SYSTEM
Turn the main switch to "ON",
and then extend and retract
the sidestand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 4.
Turn the main switch to "ON",
and then extend and retract
the sidestand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 5.
Turn the main switch to "ON",
and then extend and retract
the sidestand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 6.
Turn the main switch to "ON",
and then extend and retract
the sidestand.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 7.
Confirmation of service
completion