Yamaha XVS950CU 2014, Service Manual

Page: 475 / 580

FUEL INJECTION SYSTEM
7-84
5 Defective relay unit. Execute the diagnostic
mode. (Code No. 09)
Fuel system voltage is be-
low 3 V
→
Replace the relay
unit.
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 6.
6 Malfunction in ECU. Replace the ECU.
Fault code No. 44
Item
EEPROM fault code number: an error is detected while reading
or writing on EEPROM.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 60
Indicated
The self diagnostic code 44 detected EEPROM errors are indicat-
ed.
If there are multiple errors, they are indicated in 2 seconds inter-
vals.
00 indication: Normal status
Procedure —
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
1 Locate the malfunction. Execute the diagnostic
mode. (Code No. 60)
01 indication: Go to item 2
02 indication: Go to item 3 —
2 “01” is indicated in diagnostic
mode (code No. 60). EE-
PROM data error for adjust-
ment of CO concentration of
cylinder #1. Change the CO concentra-
tion of cylinder #1, and re-
write in EEPROM.
Refer to “ADJUSTING THE
EXHAUST GAS VOLUME”
on page 3-9.
After this adjustment is
made, the memory is not re-
covered when the main
switch is turned to “OFF”. Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Repeat item 1. If
the same number is indicat-
ed, go to item 4.
3 “02” is indicated in diagnostic
mode (code No. 60). EE-
PROM data error for adjust-
ment of CO concentration of
cylinder #2. Change the CO concentra-
tion of cylinder #2, and re-
write in EEPROM.
Refer to “ADJUSTING THE
EXHAUST GAS VOLUME”
on page 3-9.
After this adjustment is
made, the memory is not re-
covered when the main
switch is turned to “OFF”. Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Repeat item 1. If
the same number is indicat-
ed, go to item 4.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 43
Item
Fuel system voltage: incorrect voltage supplied to the fuel in-
jector and fuel pump.