Yamaha XVS950CU 2014, Service Manual

Page: 450 / 580

FUEL INJECTION SYSTEM
7-59
TIP
If fault code numbers “28” and “37” are both indicated, take the actions specified for fault code number
“28” first.
Fault code No. 30
Item Latch up detected.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. 08
Indicated
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Procedure
Remove the lean angle sensor and incline it more than 45 de-
grees.
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
1 The vehicle has overturned. Raise the vehicle upright. Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 2.
2 Installed condition of lean
angle sensor. Check the installed direction
and condition of the sensor. Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 3.
3 Defective lean angle sensor. Execute the diagnostic
mode. (Code No. 08)
An indicated value is out of
the specified range
→
Re-
place the lean angle sensor.
Turn the main switch to “ON”,
then to “OFF”, and then back
to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 4.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 33
Item
Front cylinder ignition coil: open or short circuit detected in
the primary lead of the front cylinder ignition coil.
Fail-safe system
Able to start engine (depending on the number of faulty cylinders)
Able to drive vehicle (depending on the number of faulty cylinders)
Diagnostic code No. 30
Actuation
Actuates the front cylinder ignition coil five times at one-second in-
tervals.
The “CHECK” indicator and “
” on the Yamaha diagnostic tool
screen come on each time the ignition coil is actuated.