Yamaha STAR XVS95CE 2DX1 2014 Service Manual page 372

Fault code No.
Item
8 Malfunction in ECU.
9 Delete the fault code.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Indicated
09 Procedure
Actuation
50
Procedure
Probable cause of mal-
Item
function and check
1 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).
2 Connection of ECU 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).
42
Speed sensor: no normal signals are received from the speed
A
sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Replace the ECU.
43
Fuel system voltage: incorrect voltage supplied to the fuel in-
jector and fuel pump.
Able to start engine
Able to drive vehicle
09, 50
Fuel system voltage (battery voltage)
Approximately 12.0
Set the engine stop switch to " ", and then compare the actually
measured battery voltage with the display value. (If the actually
measured battery voltage is low, recharge the battery.)
Actuates the relay unit five times at one-second intervals.
Illuminates the engine trouble warning light.
Check that the relay unit is actuated five times by listening for the
operating sound.
Maintenance job
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.
7-59
FUEL INJECTION SYSTEM
Turn the main switch to "ON",
and then rotate the rear
wheel by hand.
Start the engine, and input
the vehicle speed signals by
operating the vehicle at 20 to
30 km/h (19 mph).
Check that the fault code
number is not displayed.
Confirmation of service
completion
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 2.
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 3.