Yamaha FZ09E - Troubleshooting

FUEL PUMP SYSTEM
EA$27S10
TROUB L ES H OOT IN G
If
the f ue l p um p fails to operate.
T I P ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
• Be f ore troubleshooting, remove the fo ll ow i ng part(s):
1. Ri
de r seat
2. Air scoop
3. Fue l tank cover
4. Fue l tank
1. Check the fuses.
(Main, ignit
io n and fuel injection
system)
Refer to "C
HEC KING THE FU SES"
on page 8-93.
OK -!.
2. Check the battery.
Refer to "
CH E CK ING AND
CHA R GING THE BA TT ERY" on
page 8-94.
OK -!.
3. Check the ma in sw itch.
Refer to "
CHECK ING THE
SWITCHES" on page 8- 89 .
OK -!.
4. Check the start/engine stop sw itch.
Refer to
"C HE CK ING THE
SWITCHES"
on page 8-89.
OK -!.
5. Che ck the relay unit (fuel pump re-
lay).
Refer to
"C HE CK ING THE RE -
LA YS" on page 8-97.
OK -!.
6. Che ck the fuel pump.
Refer to "
CHECK ING THE FUE L
PU MP OPERATION " on page 7 -3 .
OK -!.
7. Check the ent i re fuel pu mp sys-
t
em's wiring.
Refer to "
CIRCUIT DI AG R AM " on
page 8-81.
OK -!.
Rep l ace the ECU.
Ref er to " REPLACING THE ECU (e n-
gi
ne co ntrol un it)" on page 8-93.
NG ~
N G~
NG ~
NG ~
NG ~
NG ~
N G~
8-83
Rep la ce the fuse(s).
• Clean
the ba tt ery terminals.
•
Rec har ge or r ep l ace the ba ttery.
Rep la ce the ma in sw itch.
Replace the rig ht handl ebar sw itch.
Rep
la ce the relay unit.
Rep l ace the fuel p ump.
Pro p er ly co nn ec t or repair the fuel p ump
sys tem's wi ri ng.