Yamaha Fz 09 2014 Manual

							FUEL INJECTION  SYSTEM 
Fault code No. 19 
Item Sidestand switch: a break or disconnection of the black/red 
lead 
of the ECU is detected . 
6 Defective sidestand  switch.  Execute  the diagnost ic  Turn the main  switch  to ON, 
mode.  (Code No. 20)  and then  extend  and retract 
Shift the  tra nsmis sion in to  the  sidestand. 
gear. 
Fault code  numbe r is not  dis-
Sides tand  retracted: 
ON  played  -+ Serv ice is  fi n ished . 
Sidestand  extended: 
OFF Fault code  numbe r is dis · 
Rep lace 
if  defe ctive. p layed-+ Go  to item 7. 
7 Malfun ction in ECU.  Replace the ECU. 
Re fe r  to REPLACING THE 
ECU (eng in e contro l unit)  on 
page  8
-93. 
Fault code No. 20 
In take 
air pressure sensor 1 or intake air pressure sensor 2: 
Item when the main switch is tu rned to ON, the intake air pres-
sure sensor 1 voltage and  intake air pressure sensor 2 volt-
age differ greatly. 
Fail-safe 
system Ab le t o  start  engine 
Able to  drive vehicle 
Diagnostic code No. 03,04 
03 Meter display Disp lays the  in take  air  pressure. 
Procedure  Shift the transmiss ion in to  gear , exte nd the  sidestand , a nd  then 
operate  the 
throttle while push ing t he(?) s ide of the  start/eng in e 
stop  switc
h. (If the display  value changes,  the perfo r mance is OK.) 
04 
Meter display D isplays the  in ta ke  air  pressure. 
Procedure  Shift the  transm ission  into  gear,  extend  the sidestand , and  then 
operate  the 
throttle while push ing t he(?) s ide of the  start/eng in e 
stop  switc
h. (If the display  value changes,  the perfo r mance is OK.) 
Item  Probable 
cause of Maintenance job Confirmation of service 
malfunction and check completion 
8-46  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 20 
Intake air pressure sensor 1 or intake air pressure sensor 2: 
Item when the main switch Is turned to  ON, the Intake air pres-
sure sensor 1 voltage and intake air pressure sensor  2 volt-
age differ greatly. 
1  Defect ive intake  air pressu re  Execute  the diagnost ic  Turn the main  switch  to ON. 
sensor 1.  mode. (Code No. 03)  Fault cod
e number  is not dis-
When  engine  is  stopped: 
played -+ Serv ice  is  fi n ished. 
Atmosp he ric 
pressu re at th e Fau lt code  numbe r  is  dis -
curre nt 
a lti tu de and  weather p layed -+ Go to  ite m 2. 
cond itions  is  indicat ed. 
Om above  sea level: Approx . 
101 kPa  (757.6  mm Hg, 29.8 
i n  Hg) 
3000 m (9800 ft)  above  sea 
leve l: Approx . 70 kPa (525.0 
mmHg, 
20.7 inHg) 
D isp layed  value is inco rrect 
-+ Ch eck  the  intake  air  pres-
sure  sensor  1. 
Rep lace if 

defe ctive. 
Re fe r  to 
C H ECK ING T HE 
INTAKE  AIR  PRESSURE 
SENSOR  
on page 8· 109. 
2  Defect
ive int ake  air pressure  Execute the diagnos tic  Turn the main swi tch  to ON . 
sensor  2.  mode. (Code  No. 04)  Fault code  numbe r  is not  dis -
When  engine  is  stopped: 
played -+ Service  is  fi n is h e d. 
A tmo spher ic  pressure 
at the Fau lt code  numbe r is  dis-
curre nt 
a lti tu de and  weather p layed -+ Go to  item  3. 
cond itions  is  ind icated. 
O m  above  sea level: A pprox. 
101 kPa  (7 57.6  mm  Hg, 29.8 
i n  Hg) 
3000 m (980 0 ft)  above  sea 
leve l: Approx. 7 0 kPa  (525.0 
mmHg , 

20.7 
i nHg) 
D isp layed  value is  inco rrect 
-+ Check  the intake  air  pres-
sure  sens or 
2. 
Rep lace if  defective. 
Re fe r  to 
CHECK IN G THE 
IN TAKE  AIR  PRESSURE 
SENSOR  
on page 8-109. 
3 Malfu nction in ECU. Rep lace the ECU. 
Refer  to REPLACING THE 
ECU (eng ine co ntr ol u nit)  on 
p a ge  8-93. 
8-47  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 21 
Item Coolant temperature sensor: open or short circuit detected. 
Fail-safe system Able to  start  engine 
Able to  drive veh icle 
Diagnostic code No. 06 
Meter display Disp lays the coo la nt tempe rature. 
Procedure Compare  the actually measured coolant tempera ture with  the 
meter  display 
value. 
Item 
Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 Connection of coolant t ern-Improperly connec ted --+ Turn the main  switc h  to ON . 
perature  sensor coupler. Connect  the co upler securely Fault code  number  is  no t dis-
C he ck  the 

lo ck ing  condi tion  or replace  the wir e  ha rness. 
p layed --+ Service  is fin ish ed. 
of the co upler. Fault code  number  is  dis-
D iscon nect  the 
coupler and played --+ Go t o  ite m 2 . 
check  the pins  (bent 
or bro -
ken 
terminals and lo ck ing 
condi tion of the pins). 
2  Connection 
of wi
re  harness Improper ly connected --+ Turn  the main  sw itch  to ON . 
ECU  coupler. 
Con nect  the co upler secu rely Fault code  number  is  no t dis-
C he ck  the 
locking  condi tion  or replace  the wir e  ha rness. 
played --+ Service  is fin ish ed. 
of the coupler. Fault code  number  is  dis-
D iscon nect  the 
coupler and played --+ Go t o  ite m 3 . 
check  the pins  (bent 
or bro -
ken 
term inals and lock in g 
condi tion of the pins). 
3  W
ire  har ness  continui
ty. Open or shor t circu it --+ Turn  the main  sw itch  to ON . 
Rep lace 
the  wire  harness. Fault code  number  is  no t dis-
Between 
coolan t tempera-played --+ Service  is fin ish ed. 
lure  sensor 
coup ler and ECU  Fault code number  is  dis-
coup ler.  played --+ Go t o  ite m  4 . 
g reen/w hi
te-green/ white 
Betwee n 
coolant tempera-
t ure  sensor 
coupler and  joint 
con nector . 
black/b lue -black/bl ue 
Between  joint connec tor and 
ECU coupler. 
black/b lue -black/bl ue 
4 Installed co nd ition of coo lant Impro perly  install ed senso r Turn the main  sw itch  to ON . 
temperatu re senso r. --+ Reinstall or repla ce the Fault code  number  is  no t dis-
Check  for 
loose ness or sensor. played --+ Serv ice  is  fi n is h ed. 
pinching. 
Fau lt code  number  is  dis -
played --+ Go to  item 5. 
8-48  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 21 
Item Coolant temperature sensor: open or short circuit detected. 
5 Defect ive coola nt tem pe ra · Execute  the diagnost ic  Turn the main  switch  to ON. 
tu re  sensor.  mode. (Code No. 06) Fau lt code  num ber is  no t dis· 
When  engine  is co ld: played  -+ Service  is  fi n ished. 
D isp layed tem pe ratu re  is Fau lt code  numbe r  is d is · 
c lose 
to  th e  amb ie nt te mp er-played  -+ Go to ite m 6. 
ature. 
The 
d isp layed temperatu re  is 
not 
c los e to  the  am bien t tern· 
perature -+ Check  the cool-
ant tempe ratu re  sensor. 
Rep lace if 

defective. 
Refer  to 
CHECK ING T HE 
COOLANT  TEMPERATURE 
SENSOR  
on page 8· 106 . 
6 
Mal funct io n in ECU.  Replace the ECU. 
Re fe r  to REPLACING THE 
ECU (eng in e co ntr ol u nit)  on 
p age 
8 ·93. 
Fault code No. 22 
Item Intake air temperature sensor: open or short circuit det ec ted. 
Fall -safe system Able t o  start  eng in e 
A ble to  drive vehic le 
Diagnostic code No. 05 
Meter display D isplays the  air  tempe rature. 
Procedure Compare  the actua lly measu red  air  temperatu re  with  the mete r 
display  valu e. 
Ite m 
Probable cause of Maintenance job Confirmation of service 
malfunction and check comple tion 
1 Connection of in ta ke  air  tern-Improperly connec ted -+ Turn  the mai n sw itc h  to O N. 
pera ture senso r coupler. Co nn ec t the co up ler  sec urely  Fault code number  is not dis· 
C heck  the locking co ndit ion  or replace the  wire  harness. played  -+ Service  is  fi n ished . 
o f the 
co upl er.  Fault code  number  is  dis-
D isc onnec t the 
co up ler and played  -+ Go to ite m 2. 
che ck  the  pins (be nt or b ro -
ken 
t erm ina ls a nd lock ing 
co nd ition of t h e  pin s) . 
2 Connection of wi re  harness Imprope rly co nnec ted -+ Turn  the mai n sw itc h  to O N. 
ECU  coup ler. 
Co nn ec t the co up ler  sec urely  Fault code number  is not dis· 
C heck  the  locking condit ion or replace the  wire  harness. played  -+ Service  is  fin ished. 
o f the 
co upl er.  Fault code  number  is  dis-
D isc onnec t the 
co up ler and played  -+ Go to ite m 3. 
ch eck  the pins (be nt or b ro-
ken 
t e rm ina ls a nd lock ing 
co nd ition of t he p in s) . 
8-49  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 22 
Item  Intake ai
r temperature sensor: open or short circuit detected. 
3  W ir e  harness  continui ty. 
Ope n or short  circu it ~ Turn  the main  switch  to ON. 
Rep lace 
the  wire  harness. Fau lt code  number is  no t dis-
Be tween  intake air tempera -
played ~ Serv ice  is  fi n ished. 
ture  sen
sor coup ler and ECU  Fault code  numbe r  is  dis -
coup le r.  p
layed ~ Go to  ite m 4. 
brown /wh ite-brown/wh ite 
Be twee n intake  air  tempera-
l ur e sensor 
coupler and  joint 
connecto r. 
b lack/ blue -black/bl ue 
Be twee n joint  connec tor  an d 
ECU  coupler. 
b lack/ blue -b
lack/bl ue 
4 Ins talled cond ition of int ake Imprope rly ins talled se nsor  Turn the main switch  to ON . 
air tem pe ratu re  se nsor. ~ Reinstall or rep lace the Fau lt code  numbe r  is not  dis -
Ch eck  fo r 
looseness or  sensor. played ~ Serv ice  is  fi n is h e d. 
pinching. 
Fau lt code  numbe r is  dis-
played ~ Go to  item  5. 
5  Defect
i
ve intake air  tempera -Execute  the diagnos tic  Turn the main switch  to ON . 
ture  se nsor.  mode. (Code No. 05)  Fault code  numbe r 

is  no t dis-
When  engine  is 
co ld :  played ~ Serv ice  is  fi n is h e d. 
D isp layed tempera ture  is Fau lt code  numbe r is  dis-
close to  the  amb ient  temper-p layed ~ Go to  item  6. 
a  tu  re. 
T he 
dis played t emperature  is 
no t 
close to  the  ambien t tern -
p e ra ture. 
~Check th e  intake 
ai r temperature  sensor. 
Replace if 

defec t
ive. 
Refe r  to C H ECK ING T HE 
INTAKE  AIR TEMPERA-
TURE  SENSOR  on page 
8-109. 
6 Malfunct ion in ECU. Rep lace the ECU. 
Re fe r  to REPLACING THE 
E CU (en gine con tro l unit)  on 
page  8-
93. 
Fault code No. 24 
Item 02 sensor: no normal signals are received from the 02 sen-
sor. 
Fail-safe system A ble t o  start  eng ine 
Abl e to  drive vehic le 
Diagnostic code N o. -
Meter display -
Procedure -
8-50  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 24 
Item 0
2 sensor: no normal signals are  received from the 0
2 sen -
sor. 
Item Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 Installed c ond iti o n of 0
2 sen-Improperly  in stalled se nsor S tart th e  eng in e,  warm  it  up, 
sor . -) Reins tall or rep lace th e  and then  race  it ,  or  execute 
sensor.  the 
diag nos tic  mode.  (Code 
No. 63) 
Fault code  number  is  no t 

d
is-
played -) Serv ice i s  fin is h ed. 
F au lt code  numbe r 

is d is-
p layed -) Go to  item 2. 
2 Co nnec tion of 0
2 se nsor Improperly co nnec ted -) S tart th e  eng in e,  warm  it  up , 
coupler . Connect  the coup le r secure ly and  then  rac e ii , or  execute 
Check  the 

loc king 
cond iti o n or replace the  wire  harness.  th e  diag nost ic  mode.  (Code 
o f  the 
co up ler . No. 63) 
D iscon nect  the 
coup ler and Fault code  number  is  no t 

dis -
c h eck  the pi
ns (be nt or b ro -p layed -) Serv ice i s f in is h ed. 
k e n 
te rm ina ls a nd lock ing  F
au lt code  numbe r 

is d is-
condit ion  of the  pins) . 
played -) Go to  item 3. 
3  Co
nnec tio n of w ir e  ha rness Improperly co nnec ted -) S tart th e  eng in e , warm  it  up , 
ECU 
coup ler. Con nect  the coup ler securely and  then  race  it , or execute 
Check  the 
loc king 
cond iti o n or replace the  wir e  harness.  the  diag nos tic  mode.  (Code 
o f  the 
co up ler . No. 63) 
D iscon nect  the 
coup ler and Fault code  number  is  no t 

dis-
c h eck  the pi
ns (be nt or b ro -p layed -) Serv ice i s  fin is h ed. 
k e n 
term ina ls a nd lock ing  Fau lt code  numbe r is 

dis -
condit ion  of the  pin s). 
p layed -) Go t o  item 4 . 
4  W ir e  ha rness  contin u i
ty. Ope n or  sh o rt  circ uit -) S tart th e  eng in e , warm  it  up , 
Rep lace th e wire  harness.  and then  rac e ii , or  exec ute 
Betwee n 0
2 senso r coupler th e  diag nos tic  mode.  (Code 
and  ECU 
coup ler. No. 63) 
gray
/green -gray /gree n Fault code  number  is  no t  dis-
p
ink/b lack-pink/b lack  p
layed -) Serv ice i s  fin is h ed. 
Be twee n 
0
2 senso r coupler  F
au lt code  numbe r is  d
is -
and  jo in t co nnector. 
p layed -) Go to  item 5. 
b lack/b lue -bla ck/bl ue 
red/wh it e-red/wh ite 
Be twee n jo int  co nnec t
or and 
ECU 
coupl er. 
b lack/blue-black/blue 
Be twee n jo int  co nnec tor and 
fuse  box 1. 
red
/wh it e-red/wh ite 
8-51  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 24 
Item  0
2 sensor: no normal signals are received from the 0
2 sen-
sor. 
5  C
heck 
fuel pressure.  Refer to C HECK ING THE Start the  engine , warm  it  up , 
FUEL  PRESSURE  on page  and then  race  it,  or  execute 
7·11. th e  diag nostic  mode.  (Code 
No. 63) 
Fault code number  is  not  dis -
played ~ Service is  fin ish ed. 
Fau lt code  numbe r is  dis-
played ~ Go to  item 6. 
6  Defective 0
2 sensor . 
Check the 0
2 sensor. Start th e  engi ne,  warm  it  up , 
Rep lace if 

defective.  and 
then  race  it,  or  execute 
Re fe r  to 
E NGIN E the  diag nostic  mode.  (Code 
REMOVAL on page 5·3. No. 63) 
Fault code  number  is  not  dis-
played ~ Service is  fin ish ed. 
Fau lt code  numbe r is  dis -
played~ Go to item 7. 
7 Malfun ction in ECU .  Replace the ECU. 
Refer  to REPLACING THE 
ECU (eng ine co ntr ol uni t) on 
p age 
8-93. 
Fa u
lt code No. 25 
Item  Intake air pressure sensor 2: open o r short circuit detected. 
Fail-safe system A ble t o  start  eng ine 
Ab le to  drive vehicl e 
Diagnostic code N o. 04 
Meter display D isp lays the  intake  air pressure. 
Procedure Shift the  transmiss ion  into gear , extend  the sidestand,  and  then 
ope rate  the 
thro ttle while push ing  the (i) side of the  starVengine 
stop  switc h. 
(If th e disp lay  value changes , th e performa nce is OK.) 
Item 
Probable cause of Maintenance job Confirmation of service 
malfunction and check completion 
1 Connect ion of intake  air  pres-Impro perly connected ~ Turn  the main  sw itch  to ON . 
sure  sensor  2 coupler. Con nec t the coupler  securely  Fault code number  is  no t dis-
Check  the 

lo ck ing 
c ondi tion  or replace the  wir e  ha rness. played ~ Service is  fin ish ed. 
of the coupler .  Fault code  numbe r is  dis-
D iscon nec t the 
coupler and p layed ~ Go to  item  2. 
check  the pins  (bent 
or bro · 
ken ter minals an d lock ing 
condition of th e pins). 
8-52  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 25 
Item  I
ntake air  pressure  sensor 2: open  or  short  circuit detected . 
2  Connect ion 
of w ire  harness Imprope rly co nnected ~ Turn  the main  switch  to ON . 
ECU  coupler . 
Con nect the  coupler  secure ly  Fau lt code  numbe r is  no t dis-
Check  the 
locking cond it ion  or replace the 

wire  harness. 
p layed ~ Service  is  fi n ished. 
of the coupler.  Fault code  numbe r  is  dis -
D iscon n
ect the co upler and played ~ Go to  item 3. 
check  the pins (bent or bro -
ke n 
term

in als 
a nd lock ing 
cond iti o n of the  pins) . 
3  W ir e  harness  continui ty. 
Ope n or short  circu it ~ Turn  the main  switch  to ON . 
Rep lace 
the  wire  harness. 
F au lt code  numbe

r is 
not dis-
Between  intake  air pressure 
played ~ Service  is  fi n ished. 
sensor  2 
couple r and ECU  Fault code  number is 

dis -
coup le r.  played ~ Go to  item 4. 
p ink/ white - p ink/w hit e 
Be twee n intake  air  pressure 
sensor  2 
couple r and  joint 
connector. 
b lue-blue 
b lack/b l
ue-black/b lu e 
Between  joint connec tor  and 
ECU  coupler. 
b l
ue-blue 
b l
ack/blue -black/b lue 
4 Ins ta lled co nd iti o n of int ake Im prope rly  in stalled se nsor  Turn 
the main  switch  to ON . 
air pressu re sensor 2. ~ Reins tall or rep lace  the Fau lt code  number  is  no t  dis -
Check  for 
looseness or sensor. p layed ~ Service  is f in is hed . 
pinching . 
Fau lt code  numbe

r is d is -
p layed ~ Go to  item 5. 
8-53  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 25 
Item  Intake ai
r pressure sensor 2: open o r short circuit detected. 
5  Defect i
ve intake  air pressu re  Execute  the diagnost ic  Turn the main  switch  to ON. 
sensor  2.  mode. (Code No. 04) Fau lt code  number is  no t dis-
When  engine  is  stopped: 
played --+ Serv ice  is  fi n ished. 
Atmosp he ric 
pressu re at th e Fau lt code  numbe r  is  dis -
curre nt 
a lti tu de and  weather p layed --+ Go to  ite m 6. 
cond itions  is  indicat ed. 
At  sea 
leve l: Approx. 101 kPa 
(757.6  mmHg,  29.8 inHg) 
1000 m (3300 ft)  above  sea 
leve l: Approx. 90 kPa (675. 1 
mmHg , 26.6 inHg) 
200 0 m (6700 ft)  above  sea 
leve l: Approx. 80 kPa (600.0 
mmHg , 

23.6  inHg) 
3000 m (9800 ft)  above  sea 
leve l: Approx. 7 0 kPa  (525.0 
mmHg , 

20.7  inHg) 
When  engine  is  crank in g: 
M ake  sure  th
at the indicat ion 
value changes. 
T he 
value does  not change 
w he n  engine  is cranking . 
--+ 
Check  the intake  air  press ure 
sensor 
2. 
Rep lace if  defective. 
Re fe r  to 
C H ECK ING T HE 
INTAKE  AIR  PRESSURE 
SENSOR  
on page 8-10 9. 
6 
Mal funct ion in ECU.  Replace the ECU. 
Re fe r  to R EPLACING THE 
ECU (engine co ntr ol u nit)  on 
page  8-93. 
TIP~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
•  If faul t code  numbe rs  25  and 26 are  both indica te d , tak e the  actions  specified  for fault code  numbe r 
25 first. 
•  If  fault code  numbers 25  and 14 a re  both indica ted, ta k e  the  actio ns  spec ified  for fault code  number 
25 first. 
Fault code No. 26 
Item  Intake ai
r pressure sensor 2: hose system m alfunction 
(clogged or detached hose). 
Fail -safe system Able to  start  engi ne 
Able to  drive vehicle 
Diagnostic code No. 04 
Meter display D isp lays the  in ta ke  air  pressure. 
8-54  
						

							FUEL INJECTION  SYSTEM 
Fault code No. 26 
Item  Intake ai
r pressure sensor 2: hose system malfunction 
(clogged or detached hose). 
Procedure Shilt th e t ransmis sion  into gear , extend  the sidesta nd , a nd  then 
opera te  the 
thro ttle  wh ile push in g  the