Yamaha XVS950CU 2014, Service Manual

Page: 445 / 580

FUEL INJECTION SYSTEM
7-54
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). Improperly connected
→
Connect the coupler secure-
ly or replace the wire har-
ness.
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.
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). Improperly connected
→
Connect the coupler secure-
ly or replace the wire har-
ness.
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.
5 Wire harness continuity. 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
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.
6 Defective sidestand switch. Execute the diagnostic
mode. (Code No. 20)
Shift the transmission into
gear.
Sidestand retracted: “ON”
Sidestand extended: “OFF”
Replace if defective. 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.
7 Malfunction in ECU. Replace the ECU.
Fault code No. 22
Item Intake air temperature sensor: open or short circuit detected.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 05
Indicated Displays the air temperature.
Procedure
Compare the actually measured intake air temperature with the in-
dicated value.
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
Fault code No. 19
Item
Sidestand switch: a break or disconnection of the blue/black
lead of the ECU (engine control unit) is detected.