Yamaha Fz 09 2014 Manual

e. Meas ure  the coo lant tempera ture sensor re­
s istance. 
••••••••••••••••••\
•••••••••••••• 
3. Install: 
•  Coo lant 
tem pera ture  senso r 
,. 
Coolant temperature sensor 
16 Nm  (1.6 m·kgf, 12 ft·lbf) 
CHECKING 
THE  THROTTLE POSITION 
SENSOR 
1.  Remove : 
• T hrott le position sen so r 
(from  the 
thro ttle bod ies) 
EWA1AC1106 
A WARNING 
• Handle the throttle position sensor with 
special care. 
• Never  subject  the throttle position sensor 
to strong shocks. If the throttle position...

b. Measure  the accelerator pos it ion  sensor 
maximum  resistance. 
••••••••••••••••••\
•••••••••••••• 
3. Install: 
•  Acce lera tor 
posit ion  sensor 
TIP~~~~~~~~~~~~~~­
When installing the accelerato r position  sensor , 
ad just  its 
ang le  proper ly . Re fe r  to ADJ USTING 
THE  ACCELERATOR POSITION  SENSOR on 
page 
7-13. 
EAS1RCl81» 
CHECK ING THE THROTILE SERVO  MOTOR 
1. Remove: 
• Air f il ter case 
Refer  to 
GE

NERAL  CHASSIS 
on page  4-1. 
2.  Chec
k: 
•Throttle  valve operation...

2 1 
D 
c. Meas ure  the a ir  in du ction  system  sole no id  re ­
sista nce. 
EAS2&11 
CHECKING THE INTAKE  AIR PRESSURE 
SENSOR 
1. Chec k: 
•  In ta ke air  pre ssu re  se nsor ou tp ut vol ta g e 
Ou t of sp eci fica tion -> Rep lace. 
Intake air pressure sensor output 
voltage 
3.57-3.71 V @ 101.3 kPa 
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 
a.  Connec t the  test  harness S-pressu re  sensor 
(3P) 
1 to  the intake  air  p ressure  sensor  and 
w ire  har ness  as shown. 
£CA 1RCl&OS 
NOTICE...

Pocket tester 
90890-03112 
Analog 
pocket tester 
YU-03 112 -C 
b. Immerse the  intake 

air  temperatu
re sensor 
1  in  a con ta ine r filled with  wate r 2. 
TIP~~~~~~~~~~~~~~~ 
Make  sure that the intake  air  tem perature sensor 
termina ls do  not 

get wet. 
c. 
P lace a 

th ermometer 
3 in the  wa ter. 
3 
1 
2 
d. 
S low ly heat  the wa te r,  th en let it coo l dow n to 
the  specified  tempera
ture. 
e. Measure  the in take  air  temperature  sensor 
resistance. 
••••••••••••••••••\...

EA$1ACHll7 
CHECKING THE FUEL INJECTORS 
The following procedure applies to all of the fue l 
injectors. 
1.  Remove: 
• Fue l injector 
Refe r 
to THROTTLE  BODIES on page  7-5. 
2.  Check: 
•  Fue l injector  res istance 
Out of  specif icat ion -+ Replace the fue l injec­
tor. 
l~I 
Resistance 
12.0 Q 
••••••••••••••••••\
•••••••••••••• 
a.  Disconnect  the fue l injector coupler from  the 
fuel injector. 
b.  Connect  the pocket  tester (Q x 10) to the fue l 
injector coupler as  shown. 
Pocket...

TROUBLESHOOTING 
TROUBLESHOOTIN G ........................................ ......................... ........ .............  9-1 
GENERAL 
INFORMATION .............. .... .... ........ .... ............. ........ ........ .... .... . 9-1 
STARTING  FAILURES ..... .... .... .... .... .... ..... .... .... .... .... .... .... .... ..... ........ .... ....  9-1 
INCORRECT  ENGINE IDLING SPEED ........ .... .... .... .... ........ ..... ........ .... ....  9-1 
POOR  MEDIUM -AND -HIGH-SPEED  PERFORMANCE...

EA~1 
TROUBLESHOOTING 
, ....... 
GENERAL INFORMATION 
TIP--------------­
The following guide for troubl eshooting does  not 
cover 
all the poss ible causes  of tro ub le. It shou ld 
be h elpful, how ever, as a gu ide to basic troub le­
shooting.  Refer to the relat ive procedure in this 
manual for checks , adjustments,  and rep lace ­
ment of parts. 
EAS3Q.l.10 
STARTING  FAILURES 
Engine 
1. Cylinder(s) and cylinder h ead(s) 
• Loose  spark plug 
• 
Loose cylinder head or cylinder 
• 
Damaged...

• Worn or damaged  elect rode 
• Worn  or damaged  ins u

lato r 
3. 
Ign it io n  coil(s) 
• 
Broken  or sh orted  primary or secondary coil s 
• 
C racked  or broken  ig n

it io n 
coil 
4. Ign it io n sys tem 
•Fau lty ECU 
•  Fau lty 
cranks haft  pos it io n  se nsor 
• Broken gene rator  rotor woodruff  key 
, . .,.,.., 
POOR MEDIUM -AND-HIGH -SPEED 
PERFORMANCE 
Refe r  to STARTING  FAILURES on page 9-1. 
Engine 
1  . A ir filter 
•  C logged 
a ir filte r e lemen t 
Fuel sy stem 
1. T hrott le...

• Damaged pipe 
• Improperly connected  pipe 
Fuel system 
1. T hrott le body  (-ies) 
• Damaged  or loose thro ttle body join t 
2 .  Air 
filter 
•  Clogg ed 
air filter  elemen t 
Chassis 
1. Brake(s) 
• Dragg ing  brake 
Electrical system 
1. Spark plug(s) 
•  Incorrect 
spar k plug gap 
•  Incorrect spar k plug heat  range 
2. 
Ign it ion sys tem 
•Fau lty  EC U 
EA.~10 
OVERCOOLING 
Cooling system 
1. Thermosta t 
• Thermostat stays  open 
, . .,_ 
POOR BRAKING PERFORMANCE 
• Worn  brake  pad 
•...