Troubleshooting - Yamaha YZF-R1 2007 Service Manual

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
EAS27570

TROUBLESHOOTING

If the fuel pump fails to operate.
NOTE:
• Before troubleshooting, remove the following part(s):
1 Rider seat
2 Passenger seat
3 Fuel tank
4 Side cowlings
1 Check the fuses.
(Main, ignition and fuel injection
system)
Refer to "CHECKING THE FUSES"
on page 8-89.
OK↓
2 Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-89.
OK↓
3 Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-85.
OK↓
4 Check the engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-85.
OK↓
5 Check the starting circuit cut-off
relay.
Refer to "CHECKING THE
RELAYS" on page 8-92.
OK↓
6 Check the fuel pump.
Refer to "CHECKING THE FUEL
PRESSURE" on page 7-6.
OK↓
email: info@motomatrix.co.uk
FUEL PUMP SYSTEM
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Replace the immobilizer unit.
NG→
Replace the right handlebar switch.
NG→
Replace the starting circuit cut-off
relay.
NG→
Replace the fuel pump.
8-69